Vineyard Underground
What if you could hang out with experienced grape growers, ask them about the science of grape growing, vineyard operations, and more; then take an insight or two to improve your vineyard and ultimately the quality of the wines you produce? That’s what we do each week on the Vineyard Underground. Hosted by Fritz Westover –– viticulture expert more than 20 years of experience in the vineyard industry –– every episode is an in-depth look at grape growing methods, care, and even complicated matters of fertilization and pest and disease management? The goal is to provide you with an understanding of the complicated aspects of viticulture science so that experienced and even first-time grape growers will be able to understand and implement new practices in their vineyard.
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089: Red Flags for Planting a Vineyard with Dr. Mark Greenspan
01/20/2026
089: Red Flags for Planting a Vineyard with Dr. Mark Greenspan
Planting a vineyard is a major investment, and the decisions made before the first vine goes into the ground can determine long-term success or costly failure. In this episode, Fritz sits down with renowned viticulture expert Dr. Mark Greenspan to unpack the most common red flags vineyard owners and operators should watch for when planning a new planting. Drawing on more than three decades of scientific research and hands-on field experience, Dr. Greenspan explains why many vineyard problems originate long before planting day. Fritz and Dr. Greenspan also discuss the dangers of relying on assumptions or neighboring vineyard performance instead of site-specific data and professional evaluation. Listeners will learn why thorough pre-plant assessments — including soil testing, climate analysis, and thoughtful rootstock and variety selection — are essential risk management tools rather than optional steps. This episode is especially valuable for growers considering new vineyard development, replanting existing blocks, or expanding acreage. By understanding these early warning signs, listeners can make more informed decisions, avoid expensive mistakes, and set their vineyards up for sustainable productivity and profitability. In this episode, you will hear: Common red flags that signal potential vineyard failure before planting Why site-specific soil and climate data matter more than assumptions Risks of poor variety and rootstock selection The long-term cost of cutting corners during vineyard planning Practical steps to reduce risk and improve vineyard performance Follow and Review: If you enjoyed this episode, be sure to follow the podcast and leave a 5-star review on Apple Podcasts! Your support helps us reach more listeners. 💜 Click the ‘+’ in the top right corner of Apple Podcasts to follow now. Resources: Register for Fritz’s FREE live virtual pruning event, on January 29th at noon Central, and make sure you and your team can spot, fix, and avoid pruning mistakes this season. If you’re starting a vineyard or thinking about starting a vineyard, visit to get Fritz’s online Prospective Winegrape Grower Course to help you get your vineyard planned and planted correctly from the start. Use the code PODCAST at checkout to save $89.00 as a thank you for being a podcast listener. If you have questions about today’s episode or ideas for future episodes, go to and click the Ask Fritz button. Today’s Guest: Mark Greenspan is a viticulture expert with 3 decades of scientific, technical, and field experience. He is a Certified Crop Advisor (CCA), Certified Professional Agronomist (CPAg), and licensed Pest Control Advisor (PCA) in California and the founder of Advanced Viticulture, a leading vineyard services company in California. Learn more about Advanced Viticulture or connect with Mark: Episode Sponsor: Today’s episode was brought to you by HydroGeo Environmental and Bahco Tools. Thank you to HydroGeo Environmental for sponsoring today’s episode. For over 20 years, Bubba Beasley and his team have helped vineyard growers with site assessments, mapping, soil and groundwater evaluations, and optimal vineyard layouts. Using the latest technology and industry expertise, HydroGeo brings clarity to even the most complex landscapes. Visit and mention the Vineyard Underground podcast for a special discount on your service. Thank you to Bahco Tools for sponsoring today’s episode. As innovators for more than 165 years, Bahco has introduced the most advanced tools in the world, and Bahco products are manufactured in factories across Europe. I exclusively prune with the Bahco (size medium). Visit www.bahco.com/int_en to find a dealer near you to get the best pruning tools on the market, along with loppers, hedging tools, cutting blades, files, and more. Episode Credits If you like this podcast and are thinking of creating your own, consider talking to my producer, Emerald City Productions. They helped me grow and produce the podcast you are listening to right now. Find out more at . Let them know we sent you.
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088: Pruning Q&A with Fritz Westover
01/06/2026
088: Pruning Q&A with Fritz Westover
Pruning is one of the most influential decisions vineyard owners and operators make each season, and in this solo Q&A episode, Fritz tackles the most common — and most misunderstood — questions he hears in the field. Drawing on hands-on experience, Fritz walks listeners through the practical realities of dormant pruning, why it matters far beyond vine appearance, and how pruning choices directly impact vine balance, yield, and long-term vineyard health. Throughout the episode, Fritz addresses real-world concerns from growers, including how aggressive pruning should be, what mistakes show up most often in young versus mature vineyards, and how to adapt pruning strategies to site conditions and vine vigor. Fritz explains how pruning windows can influence bud burst and frost risk, and why “earlier is always better” isn’t necessarily true. He highlights warning signs that a vineyard may be over- or under-pruned and offers guidance for adjusting course before problems compound over multiple seasons. This episode is particularly valuable for vineyard owners who want to move beyond rote pruning rules and better understand the “why” behind their pruning decisions. By the end, listeners will have clearer expectations for what good pruning should accomplish and how small, intentional changes can pay dividends in vine performance and fruit quality over time. In this episode, you will hear: Pruning decisions directly influence vine balance, yield, and longevity Over-pruning and under-pruning both create long-term vineyard challenges Timing of pruning can affect bud break and frost exposure Vine vigor should guide pruning intensity, not habits or tradition Small adjustments made consistently can improve vineyard performance Follow and Review: If you enjoyed this episode, be sure to follow the podcast and leave a 5-star review on Apple Podcasts! Your support helps us reach more listeners. 💜 Click the ‘+’ in the top right corner of Apple Podcasts to follow now. Resources: If you have questions about today’s episode or ideas for future episodes, go to and click the Ask Fritz button. Free Pruning Events: January 15th at 5 PM Central - Cut with Confidence, Not Consequences – Register here: January 29th at 12:00 PM Central - Snip Happens: Pruning Mistakes and Fixes – Register here: Episode Sponsor: Today’s episode was brought to you by HydroGeo Environmental and SensorInsight. Thank you to HydroGeo Environmental for sponsoring today’s episode. For over 20 years, Bubba Beasley and his team have helped vineyard growers with site assessments, mapping, soil and groundwater evaluations, and optimal vineyard layouts. Using the latest technology and industry expertise, HydroGeo brings clarity to even the most complex landscapes. Visit and mention the Vineyard Underground podcast for a special discount on your service. Thank you to SensorInsight for sponsoring today’s episode. SensorInsight is a leader in vineyard soil moisture and weather monitoring. SensorInsight designs state-of-the-art, remote satellite monitoring of soil moisture and weather, bringing actionable information for your vineyard operations straight to your phone, with real-time data so you can best decide when to turn on your irrigation, how long to run the system, and learn how the dynamics of soil moisture can change over a given season. Visit them today at . And don’t forget to mention the code Underground to receive a discount on your SensorInsight solution. Episode Credits If you like this podcast and are thinking of creating your own, consider talking to my producer, Emerald City Productions. They helped me grow and produce the podcast you are listening to right now. Find out more at . Let them know we sent you.
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087: Mothballing a Vineyard - What Growers Need to Know with Dr. Christopher Chen
12/23/2025
087: Mothballing a Vineyard - What Growers Need to Know with Dr. Christopher Chen
A topic that many growers consider but few understand is mothballing a vineyard. In this episode, Fritz covers it all with Dr. Christopher Chen, Integrated Vineyard Systems Advisor with the University of California Cooperative Extension. With economic pressures, market shifts, and operational challenges affecting vineyard owners across the industry, temporarily idling a vineyard can feel like a practical option — but it comes with important agronomic, legal, and financial considerations. Dr. Chen brings a research-based, boots-on-the-ground perspective to the conversation, helping listeners understand what “mothballing” actually means in a vineyard context. Rather than a simple shutdown, he explains that mothballing requires intentional planning to preserve vine health, soil integrity, and long-term viability. Real-world questions growers are asking get answered, such as when mothballing makes sense, how long a vineyard can remain idle, and what minimum maintenance is required to avoid costly problems down the line. Dr. Chen also highlights common mistakes growers make when they cut corners too aggressively, and how those decisions can significantly increase restart costs later. Listeners will walk away with a clearer framework for evaluating whether mothballing is the right strategy for their operation, along with guidance on how to do it responsibly if they choose that path. In this episode, you will hear: What “mothballing” a vineyard really involves Situations where mothballing may make economic sense Minimum maintenance practices to protect vine health Risks related to pests, disease, and vineyard infrastructure How mothballing decisions impact future restart costs Follow and Review: If you enjoyed this episode, be sure to follow the podcast and leave a 5-star review on Apple Podcasts! Your support helps us reach more listeners. 💜 Click the ‘+’ in the top right corner of Apple Podcasts to follow now. Resources: Register for Fritz’s FREE live virtual pruning event, on January 15th at 5 PM Central, and make sure you and your crew are ready for a successful 2026 pruning season. If you have questions about today’s episode or ideas for future episodes, go to and click the Ask Fritz button. Today’s Guest: Dr Christopher Chen is an Integrated Vineyard Systems Advisor for the University of California Cooperative Extension. Connect or follow Chris - Episode Sponsor: Today’s episode was brought to you by Clemens Technologies and SensorInsight. Thank you to Clemens Technologies for sponsoring today’s episode. Clemens Technologies is the market leader in machinery for all elements of vineyard management. Visit and provide the code UNDERGROUND to receive 5% off your order of in-stock machinery. Or reach out to Thomas Clemens directly at with any questions. Thank you to SensorInsight for sponsoring today’s episode. SensorInsight is a leader in vineyard soil moisture and weather monitoring. SensorInsight designs state-of-the-art, remote satellite monitoring of soil moisture and weather, bringing actionable information for your vineyard operations straight to your phone, with real-time data so you can best decide when to turn on your irrigation, how long to run the system, and learn how the dynamics of soil moisture can change over a given season. Visit them today at . And don’t forget to mention the code Underground to receive a discount on your SensorInsight solution. Episode Credits If you like this podcast and are thinking of creating your own, consider talking to my producer, Emerald City Productions. They helped me grow and produce the podcast you are listening to right now. Find out more at . Let them know we sent you.
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086: Viticulturists vs AI with Dr. Justin Scheiner
12/09/2025
086: Viticulturists vs AI with Dr. Justin Scheiner
Growers are turning to AI for vineyard advice — but what happens when the algorithms get it wrong? In this episode, Fritz sits down with Texas A&M Extension Viticulture Specialist Dr. Justin Scheiner to put artificial intelligence to the test and reveal where it helps…and where it falls flat. Fritz and Justin walk through real vineyard questions — on pruning cuts, choosing between cane and spur pruning, designing an effective spray program, and diagnosing puzzling leaf symptoms — then grade the answers provided by AI tools like ChatGPT and Copilot. Justin explains why, despite its convenience, AI can’t replace Extension or experienced viticulture support. He breaks down how human experts interpret nuance, adapt recommendations to site-specific realities, and help growers navigate complex issues like fungicide resistance and disease pressure — areas where AI often oversimplifies to a fault. Listeners will come away with a grounded perspective on how to responsibly use AI in vineyard decision-making: as a tool for learning, not a blueprint for management. Justin also shares updates on forward-facing research at Texas A&M, including irrigation strategies powered by sensors and machine learning, and new work aimed at improving winery efficiency. In this episode, you will hear: AI can provide helpful general information — but often misses context critical for vineyard decisions. Pruning advice from AI may be incomplete or incorrect; human expertise is still essential. Spray program recommendations from AI can be risky without resistance management and site-specific strategy. Leaf symptom diagnosis requires more than a photo — pattern, vine history, and testing matter. Follow and Review: If you enjoyed this episode, be sure to follow the podcast and leave a 5-star review on Apple Podcasts! Your support helps us reach more listeners. 💜 Click the ‘+’ in the top right corner of Apple Podcasts to follow now. Resources: Register for Fritz’s FREE live virtual pruning event, , on January 15th at 5 PM Central, and make sure you and your crew are ready for a successful 2026 pruning season. If you have questions about today’s episode or ideas for future episodes, go to and click the Ask Fritz button. Today’s Guest: Dr. Justin Scheiner is an assistant professor and Extension viticulture specialist in the Department of Horticultural Sciences for Texas A&M University. Connect with Justin: Watch Justin’s presentation on The Role of Extension in the Age of AI: Episode Sponsor: Today’s episode was brought to you by Vintner’s Vault and Bahco Tools. Thank you to Vintner’s Vault for sponsoring today’s episode! Vintner’s Vault is the #1 winery equipment company that I recommend to my growers, who are also winemakers. Visit and use the code UNDERGROUND5 (all caps) to save 5% off of your online order, or mention that you heard about them on the Vineyard Underground podcast when contacting them for a larger piece of equipment, consulting services, or turn-key packages, and they will provide a podcast listener discount for you. Thank you to Bahco for sponsoring today’s episode. As innovators for more than 165 years, Bahco has introduced the most advanced tools in the world, and Bahco products are manufactured in factories across Europe. I exclusively prune with the Bacho (size medium). Visit to find a dealer near you to get the best pruning tools on the market, along with loppers, hedging tools, cutting blades, files, and more. Episode Credits If you like this podcast and are thinking of creating your own, consider talking to my producer, Emerald City Productions. They helped me grow and produce the podcast you are listening to right now. Find out more at . Let them know we sent you.
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085: Development of the Monterey County Wine Industry with Larry Bettiga
11/25/2025
085: Development of the Monterey County Wine Industry with Larry Bettiga
Fritz welcomes longtime colleague and respected viticulture authority Larry Bettiga in this episode for an in-depth look at the evolution of Monterey County’s wine industry. With more than four decades of experience, Larry offers a rare, firsthand perspective on how the region transformed from scattered early vineyards into one of the country’s most significant cool-climate grape-growing areas. Larry explains how Monterey’s dramatic coastal influence, daily wind patterns, and diverse soils shaped both the opportunities and challenges for growers. He and Fritz unpack the early years of vineyard expansion, including the misalignment of some varieties with climate conditions and how improved temperature modeling and clone selection later steered the region toward better outcomes. The conversation also explores Larry’s extensive research on rootstocks, irrigation, canopy management, and disease control. His comparison of dormant vines, green potted vines, and tall-format grafted vines provides growers with valuable, practical guidance on establishing healthy, high-performing vineyards. This episode delivers a blend of regional history, applied science, and grounded, grower-focused lessons, capped with Larry’s reflections on the future of extension work and its continued importance in California viticulture. In this episode, you will hear: How Monterey County became a major coastal winegrowing region Why early plantings struggled, and how growers adapted with better temperature and clone data A practical comparison of dormant, green, and tall-format grafted vines Lessons from decades of research on rootstocks, canopy management, and disease control The future outlook for UC Cooperative Extension in California viticulture Follow and Review: If you enjoyed this episode, be sure to follow the podcast and leave a 5-star review on Apple Podcasts! Your support helps us reach more listeners. 💜 Click the ‘+’ in the top right corner of Apple Podcasts to follow now. Resources: Register for Fritz’s FREE live virtual pruning event, , on January 15th at 5 PM Central, and make sure you and your crew are ready for a successful 2026 pruning season. If you have questions about today’s episode or ideas for future episodes, go to and click the Ask Fritz button. Today’s Guest: Larry Bettiga is a Viticulture Farm Advisor and the Acting Monterey County Director at the University of California Cooperative Extension. Connect with Larry and view his research - Episode Sponsor: Today’s episode was brought to you by Bahco Tools. As innovators for more than 165 years, Bahco has introduced the most advanced tools in the world, and Bahco products are manufactured in factories across Europe. I exclusively prune with the Bahco (size medium). Visit to find a dealer near you to get the best pruning tools on the market, along with loppers, hedging tools, cutting blades, files, and more. Episode Credits If you like this podcast and are thinking of creating your own, consider talking to my producer, Emerald City Productions. They helped me grow and produce the podcast you are listening to right now. Find out more at . Let them know we sent you.
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084: Damage Control - Voles & Other Vertebrate Pests with Kelly Mulville & Newt Wimer
11/11/2025
084: Damage Control - Voles & Other Vertebrate Pests with Kelly Mulville & Newt Wimer
Voles, gophers, and ground squirrels are more than a nuisance — they can devastate vineyards if left unchecked. In this episode, host Fritz Westover sits down with Kelly Mulville of Paicines Ranch and Newt Wimer, an agricultural innovator, to discuss practical, sustainable ways to manage these vertebrate pests. Kelly shares his firsthand experience with a sudden vole outbreak at Paicines Ranch — one of the worst he’s ever seen — and explains how quickly the damage escalated. He walks through the telltale signs of vole damage, how girdling kills vines, and why population cycles and rainfall patterns play a role in outbreaks. Newt provides insight into developing an organic-approved, non-poisonous control technology that uses liquid CO₂ to safely and efficiently manage underground pests without harming predators or soil ecology. Together, they emphasize that pest management must balance ecological health, economics, and innovation. Listeners will learn how combining predator support (owls, weasels), physical barriers, and new technologies can help reduce damage sustainably. The conversation also highlights ongoing efforts at Paicines Ranch to create regenerative systems that share successes and failures openly, helping the vineyard community at large. In this episode, you will hear: Voles, gophers, and ground squirrels can cause extensive vineyard damage, especially through girdling and root feeding. Outbreaks are cyclical and may correspond with wetter years that promote vole breeding. Physical barriers like vole tubes and underground fencing can protect vines—but must be properly installed and buried. Encouraging natural predators such as owls and weasels significantly supports organic pest control. New cryogenic CO₂ technology offers a fast, organic-approved, and cost-effective solution for underground pest management. Follow and Review: If you enjoyed this episode, be sure to follow the podcast and leave a 5-star review on Apple Podcasts! Your support helps us reach more listeners. 💜 Click the ‘+’ in the top right corner of Apple Podcasts to follow now. Resources: Come grow with Fritz through ! Save $75 off your first year of membership with the code Underground at checkout. Have a vineyard question? Go to and click the Ask Fritz button. Listen to Kelly Mulville’s previous episode – . Today’s Guests: Kelly Mulville is a global agricultural consultant and the Vineyard Director at Paicines Ranch in San Benito County, California. Connect with Kelly at Follow Paicines Ranch: Instagram: Facebook: YouTube: Newt Wimer specializes in product development for agriculture and developed the first organic-approved squirrel and gopher control device. Connect with Newt – Episode Sponsor: Thank you to SensorInsight for sponsoring today’s episode. SensorInsight is a leader in vineyard soil moisture and weather monitoring. SensorInsight designs state-of-the-art, remote satellite monitoring of soil moisture and weather, bringing actionable information for your vineyard operations straight to your phone, with real-time data so you can best decide when to turn on your irrigation, how long to run the system, and learn how the dynamics of soil moisture can change over a given season. Visit them today at . And don’t forget to mention the code Underground to receive a discount on your SensorInsight solution. Episode Credits If you like this podcast and are thinking of creating your own, consider talking to my producer, Emerald City Productions. They helped me grow and produce the podcast you are listening to right now. Find out more at . Let them know we sent you.
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083: Plan My Vineyard with Callil Capuozzo
10/28/2025
083: Plan My Vineyard with Callil Capuozzo
In this episode, Fritz sits down with Callil Capuozzo, the founder and owner of Overhead Vineyards in coastal Rhode Island. Callil shares his unique journey from industrial designer to vineyard owner and walks through the challenges of starting a vineyard on existing farmland. The conversation explores the critical early decisions in vineyard development — from soil sampling and drainage considerations to choosing trellis systems that suit humid, fog-prone climates. Callil’s experiment with a pergola-style trellis, inspired by traditional Albarino vineyards in Rías Baixas, Spain, sparks a deeper discussion on airflow, spray coverage, disease pressure, and long-term scalability. Fritz offers practical guidance on establishing vineyard infrastructure, exploring options like high cordon or Watson systems, managing pests such as Japanese beetles and downy mildew, and the importance of fencing for deer and bird pressure. The episode also dives into variety selection, weighing the benefits of hybrids like Traminette, Baco Noir, and Itasca against the disease challenges of vinifera varieties. Listeners will learn how to match site-specific factors with smart vineyard design decisions and how to plan gradual expansion while keeping labor and management sustainable. It’s an inspiring and technical roadmap for anyone looking to scale from first planting to a working vineyard. In this episode, you will hear: Site evaluation is essential — good drainage and slope can make or break vineyard success Trellis systems should balance airflow, sun exposure, and ease of labor Pergola trellises offer unique benefits, but can become challenging at scale Hybrids are smart choices for humid regions with high disease pressure Start small, expand gradually, and adapt systems as you learn Follow and Review: If you enjoyed this episode, be sure to follow the podcast and leave a 5-star review on Apple Podcasts! Your support helps us reach more listeners. 💜 Click the ‘+’ in the top right corner of Apple Podcasts to follow now. Resources: If you’re interested in Fritz’s help with getting your vineyard planned and planted, learn more about his Vineyard Establishment Package at . And use the code GetEstablished to save $499 off your purchase of this package as a thank you for being a podcast listener. Learn more about the . If you have questions about today’s episode or ideas for future episodes, go to and click the Ask Fritz button. Today’s Guest: Callil Capuozzo is the founder and owner of Overhead Vineyards in coastal Rhode Island. Connect with Callil or learn more about Overhead Vineyards. Website – Instagram – Episode Sponsor: Thank you to SensorInsight for sponsoring today’s episode. SensorInsight is a leader in vineyard soil moisture and weather monitoring. SensorInsight designs state-of-the-art, remote satellite monitoring of soil moisture and weather, bringing actionable information for your vineyard operations straight to your phone, with real-time data so you can best decide when to turn on your irrigation, how long to run the system, and learn how the dynamics of soil moisture can change over a given season. Visit them today at . And don’t forget to mention the code Underground to receive a discount on your SensorInsight solution. Episode Credits If you like this podcast and are thinking of creating your own, consider talking to my producer, Emerald City Productions. They helped me grow and produce the podcast you are listening to right now. Find out more at . Let them know we sent you.
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082: How Vines are Made with Dustin Hooper
10/14/2025
082: How Vines are Made with Dustin Hooper
In this episode of Vineyard Underground, Fritz welcomes Dustin Hooper, Vice President of Sales at Sunridge Nurseries, to take listeners behind the scenes of how grapevines are made. While growers see the final product when vines arrive at their vineyard, there’s a fascinating process that begins long before planting — starting with certified mother vines and continuing through propagation, grafting, greenhouse production, and certification. Dustin shares his personal journey into the nursery business and offers an insider’s perspective on the complexities of producing clean, reliable vines for commercial vineyards. Together, Fritz and Dustin explore the differences between own-rooted versus grafted vines, the pros and cons of dormant bare-root versus greenhouse formats, and innovations such as tall and medium-trained vines. They also cover critical topics like soil and water testing, rootstock selection, and how clones are chosen to fine-tune vineyard performance and wine style. A key part of the discussion is the rigorous certification process overseen by UC Davis Foundation Plant Services and state agencies to ensure vines are tested and free from major viruses before they ever reach a vineyard. Dustin emphasizes that selecting the right vine format, rootstock, and clone isn’t just about availability — it’s about long-term success, sustainability, and profitability. Listeners will come away with a deeper understanding of the nursery side of viticulture and gain practical insights into how to make informed decisions when ordering vines for their vineyard. In this episode, you will hear: The difference between own-rooted and grafted vines, and when each is appropriate Pros and cons of dormant bare-root vs. greenhouse-grown vines How tall and medium-trained vines can help in specific planting scenarios Why rootstock and clone selection are critical to vineyard success The rigorous certification and testing process that protects growers from viruses Follow and Review: If you enjoyed this episode, be sure to follow the podcast and leave a 5-star review on Apple Podcasts! Your support helps us reach more listeners. 💜 Click the ‘+’ in the top right corner of Apple Podcasts to follow now. Resources: Access Fritz’s resources to protect your investment, grow your vineyard, and Be a Better Grape Grower in your first three years of vineyard establishment. If you have questions about today’s episode or ideas for future episodes, go to and click the Ask Fritz button. Today’s Guest: Dustin Hooper is the Vice President of Sales at Sunridge Nurseries Inc., and a leading expert in the grapevine nursery industry. Connect with Dustin - Episode Sponsor: Thank you to Sunridge Nurseries for sponsoring today’s episode. Sunridge Nurseries is the exclusive nursery sponsor of the Vineyard Underground podcast. They have been a family-owned company for over 45 years, and their dedicated focus on quality and consistency has grown them into the largest supplier of grapevines in both North and South America and the industry leader in nursery standards. Visit them today at and mention the code Underground to receive a podcast listener discount on your vine order. Thank you to Shellt Grow Tubes for sponsoring today’s episode. Shellt makes the ultimate grow tubes for grape vines and orchard trees. Their grow tubes are reusable, recyclable, and designed to grow with your vineyard by clicking together for taller or wider coverage. I exclusively recommend Shellt Grow Tubes to the growers I work with. Visit and order with the code UNDERGROUND to save 15% off all online orders, plus free shipping within the continental United States. Episode Credits If you like this podcast and are thinking of creating your own, consider talking to my producer, Emerald City Productions. They helped me grow and produce the podcast you are listening to right now. Find out more at . Let them know we sent you.
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081: Transitioning from Grape Grower to Winemaker with Jim Duane – Part 2
09/30/2025
081: Transitioning from Grape Grower to Winemaker with Jim Duane – Part 2
In this episode of Vineyard Underground, Fritz continues his conversation with winemaker and Inside Winemaking podcast host Jim Duane on what it takes for grape growers to successfully step into winemaking. Following part one, which covered equipment, compliance, and basic chemistry, part two dives deeper into the realities of balancing vineyard management with winery responsibilities. Fritz and Jim explore how harvest decisions shift when you’re making wine from your own fruit, weighing risks like weather and pests against the pursuit of higher quality. Jim shares how winemakers must rethink priorities, and they also break down which lab analyses should be done in-house versus outsourced. The discussion covers the intense workload during harvest, how to plan labor needs, and the value of building a team to avoid burnout. Jim stresses the importance of advance planning to manage the overlapping demands of the vineyard and the winery. He also highlights common mistakes growers face when starting out, including mismanaging SO2 additions, misinterpreting acidity, and relying on incomplete fermentation data. The episode closes with practical advice and resources for aspiring winemakers, from small-scale home fermentations to structured courses and workshops. Fritz and Jim encourage growers to start experimenting, make manageable mistakes, and seek mentorship to build both confidence and competence before fully scaling their operations. In this episode, you will hear: How harvest decisions shift when growers begin making their own wine Why budgeting for laboratory analyses is non-negotiable in commercial winemaking Common mistakes with SO2, acidity adjustments, and fermentation management The importance of advance planning to balance vineyard and winery demands Practical resources and training opportunities for new winemakers Follow and Review: If you enjoyed this episode, be sure to follow the podcast and leave a 5-star review on Apple Podcasts! Your support helps us reach more listeners. 💜 Click the ‘+’ in the top right corner of Apple Podcasts to follow now. Resources: Watch Jim’s video on how to measure . If you have questions about today’s episode or ideas for future episodes, go to and click the Ask Fritz button. Come grow with Fritz through ! Save $75 off your first year of membership with the code Underground at checkout. Today’s Guest: Jim Duane is the head winemaker at in Napa Valley and the host of the podcast. Connect with Jim, learn about upcoming winemaking courses and classes, and listen to the podcast at or follow him on Instagram: or YouTube: . Episode Sponsor: Today’s episode was brought to you by Vintner’s Vault. Vintner’s Vault was started and is operated by winemakers, so they have the knowledge and experience to help you make an educated decision on the equipment purchases and winery set-up and layouts that are best for you. They are the #1 winery equipment company that I recommend to my growers, who are also winemakers. Visit and use the code UNDERGROUND5 (all caps) to save 5% off of your online order, or mention that you heard about them on the Vineyard Underground podcast when contacting them for a larger piece of equipment, consulting services, or turn-key packages, and they will provide a podcast listener discount for you. Episode Credits If you like this podcast and are thinking of creating your own, consider talking to my producer, Emerald City Productions. They helped me grow and produce the podcast you are listening to right now. Find out more at . Let them know we sent you.
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080: Transitioning from Grape Grower to Winemaker with Jim Duane - Part 1
09/16/2025
080: Transitioning from Grape Grower to Winemaker with Jim Duane - Part 1
Many vineyard owners eventually consider moving beyond grape growing into winemaking, whether to create a new revenue stream, take control of their fruit, or explore a more creative outlet. In this episode, we welcome winemaker and podcaster Jim Duane of Seavey Vineyard and the Inside Winemaking podcast for the first part of a two-part discussion on how growers can make this transition successfully. The conversation discusses the mindset, skills, and resources needed to move from vineyard to cellar. Jim shares why a formal chemistry degree isn’t required to produce quality wine, how growers can build confidence in their palate, and which common flaws are most important to recognize early. He also outlines three stages of winemaking where growers need to focus their attention: harvest chemistry, fermentation management, and post-fermentation protection. Listeners will also gain insight into the required equipment for red and white winemaking, the importance of temperature control at each stage, and why barrels can be a turning point for quality. Fritz and Jim round out the discussion with advice on navigating licensing, compliance, and regulatory hurdles, plus a look at custom crush facilities as an option for growers who want to test the waters without a full winery investment. This episode delivers practical, confidence-building advice for any grower curious about making wine and lays the foundation for part two, where the focus shifts to how vineyard practices change once you’re also the winemaker. In this episode, you will hear: Why a chemistry degree isn’t necessary to make quality wine Three key stages of winemaking where growers must focus their attention The most common wine flaws every new winemaker should learn to detect Equipment essentials for red and white winemaking at a small scale How custom crush operations can help growers test the waters before fully committing Follow and Review: If you enjoyed this episode, be sure to follow the podcast and leave a 5-star review on Apple Podcasts! Your support helps us reach more listeners. 💜 Click the ‘+’ in the top right corner of Apple Podcasts to follow now. Resources: If you have questions about today’s episode or ideas for future episodes, go to and click the Ask Fritz button. Come grow with Fritz through ! Save $75 off your first year of membership with the code Underground at checkout. Today’s Guest: Jim Duane is the head winemaker at in Napa Valley and the host of the podcast. Connect with Jim, learn about upcoming winemaking courses and classes, and listen to the podcast at . Episode Sponsor: Today’s episode was brought to you by Vintner’s Vault. Vintner’s Vault was started and is operated by winemakers, so they have the knowledge and experience to help you make an educated decision on the equipment purchases and winery set up and layouts that are best for you. They are the #1 winery equipment company that I recommend to my growers, who are also winemakers. Visit and use the code UNDERGROUND5 (all caps) to save 5% off of your online order or mention that you heard about them on the Vineyard Underground podcast when contacting them for a larger piece of equipment, consulting services, or turn-key packages and they will provide a podcast listener discount for you. Episode Credits If you like this podcast and are thinking of creating your own, consider talking to my producer, Emerald City Productions. They helped me grow and produce the podcast you are listening to right now. Find out more at . Let them know we sent you.
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079: Plan My Vineyard with Matthieu Wheeler
09/02/2025
079: Plan My Vineyard with Matthieu Wheeler
In this episode, Fritz walks through the full planning process for a brand-new vineyard alongside guest Matthieu Wheeler. Matthieu, the winemaker at Cassidy Hill Vineyard in Connecticut and founder of Wheeler Winery, is preparing to establish his own vineyard on a newly purchased property. With Fritz’s guidance, listeners get a behind-the-scenes look at what goes into selecting vineyard sites, designing blocks, and preparing the land for long-term success. Fritz and Matthieu cover vineyard economics, including the realistic costs of establishing and maintaining vines, equipment investments, and the role of sweat equity. They also explore soil testing, nutrient management, and the importance of addressing amendments before planting. The conversation digs into key topics such as vineyard orientation, trellis design, row spacing, mechanization potential, and wildlife management. Fritz also emphasizes strategies to minimize risks from frost events, disease pressure, and poor site preparation. Whether you’re a prospective grower or expanding your existing operation, this episode provides guidance and a real-world example of how thoughtful planning lays the groundwork for decades of vineyard success. In this episode, you will hear: The importance of soil testing and incorporating amendments before planting Budgeting realistically for vineyard establishment and equipment needs Balancing wine program goals with varieties suited to local conditions Considering labor, mechanization, and long-term management in vineyard design Why starting small and scaling over time helps new growers avoid costly mistakes Follow and Review: If you enjoyed this episode, be sure to follow the podcast and leave a 5-star review on Apple Podcasts! Your support helps us reach more listeners. 💜 Click the ‘+’ in the top right corner of Apple Podcasts to follow now. Resources: If you’re interested in Fritz’s help with getting your vineyard planned and planted, learn more about his Vineyard Establishment Package at https://www. and use the code GetEstablished to save $499 off your purchase of this package as a thank you for being a podcast listener. If you have questions about today’s episode or ideas for future episodes, go to and click the Ask Fritz button. Today’s Guest: Matthieu Wheeler is the winemaker at Cassidy Hill Vineyard and the founder and owner of Wheeler Winery. Connect with Matthieu or learn more about Cassidy Hill Vineyard and Wheeler Winery. Cassidy Hill Vineyard Website - Facebook - Wheeler Winery Website - Instagram - Episode Sponsor: Today’s episode was brought to you by Vigneron Toy Store. Vigneron Toy Store specializes in Harvesters, Sprayers, Frost Mitigation Equipment, Canopy Management Trimmers, and more. As grape growers themselves, they can expertly help you determine the best equipment for your specific vineyard needs. And, as a special offer for our podcast listeners, you can save 5% off in-stock machines by entering the promo code Underground on the contact form at . Episode Credits If you like this podcast and are thinking of creating your own, consider talking to my producer, Emerald City Productions. They helped me grow and produce the podcast you are listening to right now. Find out more at . Let them know we sent you.
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078: Beyond Organic Wine with Adam Huss
08/19/2025
078: Beyond Organic Wine with Adam Huss
In this episode of Vineyard Underground, Fritz welcomes Adam Huss — host of the Beyond Organic Wine podcast, winemaker at Centralas Wine, and creator of the Crenshaw Cru Wine Garden in South Los Angeles. Adam shares his unconventional path into winemaking, beginning with a career in the nonprofit sector before launching a winery focused on ecological and community-driven practices. The conversation explores Adam’s philosophy of going “beyond organic” to embrace an ecological approach to winegrowing — one that avoids getting boxed into industry buzzwords and instead focuses on the interconnectedness of soil, plants, people, and place. He discusses his work with regenerative agriculture pioneer Kelly Mulville at Paicines Ranch, his shift toward sourcing local fruit (including prickly pears and other native plants), and his experimentation with vitiforestry — a centuries-old practice of integrating grapevines with trees to create resilient, biodiverse systems. Adam also explains how transparency in winemaking, creative use of wild or locally abundant ingredients, and community involvement shape his vision for wine that is both place-specific and environmentally sound. Listeners will hear stories from his LA-based wine garden, lessons from crop failures, and his plans for a vitiforestry project in New York that could produce wines unlike anything on the market. Whether you grow grapes conventionally, organically, or somewhere in between, Adam’s journey offers a fresh perspective on how to balance environmental stewardship, economic sustainability, and community engagement in vineyard operations. In this episode, you will hear: How “beyond organic” focuses on ecological connections rather than labels Lessons from Paicines Ranch on listening to the land before planting The concept and practice of vitiforestry, from hedgerows to “married vines” Creative use of local and wild ingredients in winemaking The role of community in sustainable agriculture and wine culture Follow and Review: If you enjoyed this episode, be sure to follow the podcast and leave a 5-star review on Apple Podcasts! Your support helps us reach more listeners. 💜 Click the ‘+’ in the top right corner of Apple Podcasts to follow now. Resources: Join Fritz live to learn about What Our Grapevine Leaves Are Telling Us – Diagnosing & Treating Symptoms on August 26, 2025 | 5:00-6:30 PM CST. Register for FREE - . Schedule your 15-minute FREE vineyard help call with Fritz for the week of August 25th at . Come grow with Fritz through ! Save $75 off your first year of membership with the code Underground at checkout. If you have questions about today’s episode or ideas for future episodes, go to and click the Ask Fritz button. Today’s Guest: Adam Huss is the podcast host of the Beyond Organic Wine podcast, the owner and winemaker for Centralas Wine in LA, and the creator of Crenshaw Cru Winegarden in South LA. Connect with Adam: Beyond Organic Wine Podcast Website - Instagram - Crenshaw Cru - Perennial Winegarden & Centralas Winery Website - Instagram and Blog - Episode Sponsor: Today’s episode was brought to you by Clemens Technologies. Clemens Technologies is the market leader in machinery for all elements of vineyard management. Visit and provide the code UNDERGROUND to receive 5% off your order of in-stock machinery. Or reach out to Thomas Clemens directly at with any questions. Episode Credits If you like this podcast and are thinking of creating your own, consider talking to my producer, Emerald City Productions. They helped me grow and produce the podcast you are listening to right now. Find out more at . Let them know we sent you.
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077: Transitioning Vineyards to Regenerative Organic Certification with Hilary Graves
08/05/2025
077: Transitioning Vineyards to Regenerative Organic Certification with Hilary Graves
In this episode, we welcome Hilary Graves, Vineyard and Grower Relations Manager at Booker Wines, to discuss how she successfully transitioned an Organic vineyard to regenerative organic certification. With over 20 years of field experience on California’s Central Coast, Hilary brings practical strategies and candid stories about what it really takes to move beyond standard organic practices. Hilary explains the core pillars of regenerative organic certification — soil health, social fairness, and animal welfare — and why she and the team at Booker Wines chose to pursue this path. She walks listeners through how integrating multi-species cover crops, implementing low-till and no-till practices, and bringing in grazing livestock have helped improve soil structure, increase water retention, and reduce reliance on inputs. Fritz and Hilary also dig into the challenges of vineyard mechanization on steep terrain, minimizing tractor passes, and creative pest control strategies, including releasing predatory lacewings by drone to combat leafhoppers. Whether you’re already farming organically or just exploring what’s next, this episode offers tangible examples of how even small changes can drive long-term benefits for your soil, your business, and the environment. In this episode, you will hear: The difference between organic and regenerative organic certification How to build a diverse cover crop blend (and why 15 species might be better than five) Using a Yeomans plow to increase water infiltration without disturbing soil structure Grazing sheep for cover crop termination in a mutually beneficial partnership Why releasing beneficial insects by drone can outpace traditional sprays for pest control Follow and Review: If you enjoyed this episode, be sure to follow the podcast and leave a 5-star review on Apple Podcasts! Your support helps us reach more listeners. 💜 Click the ‘+’ in the top right corner of Apple Podcasts to follow now. Resources: Schedule your 15-minute FREE vineyard help call with Fritz for the week of August 25th at . Join Fritz live to learn about What Our Grapevine Leaves Are Telling Us – Diagnosing & Treating Symptoms on August 26, 2025 | 5:00-6:30 PM CST. Register for FREE - . If you’re starting a vineyard or thinking about starting a vineyard, visit to get Fritz’s online Prospective Winegrape Grower Course to help you get your vineyard planned and planted correctly from the start. Use the code PODCAST at checkout to save $89.00 as a thank you for being a podcast listener. If you have questions about today’s episode or ideas for future episodes, go to and click the Ask Fritz button. Today’s Guest: Hilary Graves is a winegrower, winemaker, and viticulture educator with more than 20 years of field experience on California’s Central Coast. She currently works as the Vineyard & Grower Relations Manager for Booker Wines in Paso Robles, CA. Connect with Hilary and learn more about Booker Wines - or follow her at or Episode Sponsor: Today’s episode was brought to you by Clemens Technologies. Clemens Technologies is the market leader in machinery for all elements of vineyard management. Visit and provide the code UNDERGROUND to receive 5% off your order of in-stock machinery. Or reach out to Thomas Clemens directly at with any questions. Episode Credits: If you like this podcast and are thinking of creating your own, consider talking to my producer, Emerald City Productions. They helped me grow and produce the podcast you are listening to right now. Find out more at . Let them know we sent you.
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076: Growing Grapes Around the World – England with Dr. Belinda Kemp
07/22/2025
076: Growing Grapes Around the World – England with Dr. Belinda Kemp
In this episode of Vineyard Underground, we welcome Dr. Belinda Kemp, viticulture and enology researcher at NIAB in East Malling, England, to explore the evolving wine industry in the UK. With a background in theatrical arts and a PhD in Pinot Noir, Dr. Kemp brings a dynamic perspective to the scientific and practical aspects of cool climate viticulture. The conversation covers England’s emerging reputation for sparkling wine, the impact of climate variability on grape production, and the country's increasing focus on sustainability and innovation. Dr. Kemp discusses the shift from traditional varieties like Chardonnay and Pinot Noir toward disease-resistant hybrid grapes, including the introduction of PiWi varieties. She shares the challenges of managing common diseases like downy and powdery mildew and emerging threats like black rot. Listeners also get a glimpse into the latest research projects at NIAB, including the effects of pruning methods on yield, the role of calcium in sparkling wine stability, and the use of companion plants to improve vineyard biodiversity. Dr. Kemp explains how NIAB integrates technology and sustainability — from acoustic soil monitoring to underground rhizolabs — to support growers and improve wine quality. Whether you grow grapes in England or a similar cool, wet climate like the eastern U.S. or Canada, this episode offers applicable knowledge for tackling vineyard challenges and embracing innovation. In this episode, you will hear: England's wine industry is expanding rapidly, with a strong focus on sparkling wines New disease-resistant grape varieties are being trialed to meet climate and production demands Variability in spring weather creates challenges for cover crops, planting, and pest pressure Calcium stability is becoming an issue in sparkling wine production — NIAB is studying causes and solutions Companion planting and acoustic soil monitoring are part of a systems approach to regenerative viticulture Follow and Review: If you enjoyed this episode, be sure to follow the podcast and leave a 5-star review on Apple Podcasts! Your support helps us reach more listeners. 💜 Click the ‘+’ in the top right corner of Apple Podcasts to follow now. Resources: Join Fritz live to learn about What Our Grapevine Leaves Are Telling Us – Diagnosing & Treating Symptoms on August 26, 2025 | 5:00-6:30 PM CST. Register for FREE - https://www.virtualviticultureacademy.com/symptons. If you’re starting a vineyard or thinking about starting a vineyard, visit to get Fritz’s online Prospective Winegrape Grower Course to help you get your vineyard planned and planted correctly from the start. Use the code PODCAST at checkout to save $89.00 as a thank you for being a podcast listener. If you have questions about today’s episode or ideas for future episodes, go to and click the Ask Fritz button. Today’s Guest: Dr. Belinda Kemp is a Group Leader for Viticulture and Oenology Research at the new Wine Innovation Centre in East Malling, Kent, UK. Her current research encompasses vineyard to final sparkling wine research that includes regenerative viticulture practices, Net Zero grape growing, sparkling wine flavor, and cool climate still winemaking. Connect with Belinda and view her research - . Episode Sponsor: Today’s episode was brought to you by Sunridge Nurseries Thank you to Sunridge Nurseries for sponsoring today’s episode. Sunridge Nurseries is the exclusive nursery sponsor of the Vineyard Underground podcast. They have been a family-owned company for over 45 years, and their dedicated focus on quality and consistency has grown them into the largest supplier of grapevines in both North and South America and the industry leader in nursery standards. Visit them today at and mention the code Underground to receive a podcast listener discount on your vine order. Episode Credits If you like this podcast and are thinking of creating your own, consider talking to my producer, Emerald City Productions. They helped me grow and produce the podcast you are listening to right now. Find out more at . Let them know we sent you.
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075: The Importance of Mycorrhizal Fungi for Vineyard Health with Dr. R. Paul Schreiner
07/08/2025
075: The Importance of Mycorrhizal Fungi for Vineyard Health with Dr. R. Paul Schreiner
In this episode of Vineyard Underground, Fritz welcomes Dr. R. Paul Schreiner, recently retired research plant physiologist from the USDA, for a deep dive into the fascinating world of mycorrhizal fungi and their impact on vineyard health. With over two decades of research experience in grapevine physiology and root biology, Dr. Schreiner shares the critical roles these fungi play in nutrient uptake, root efficiency, drought tolerance, and overall soil structure. Fritz and Dr. Schreiner explore what arbuscular mycorrhizal fungi (AMF) are, how they form symbiotic relationships with grapevine roots, and why grapes are considered “super hosts.” They discuss how AMF enhances phosphorus acquisition, especially in low-P soils, and how they support the uptake of other nutrients like potassium, zinc, and copper. They also talk about factors that suppress or encourage fungal colonization, such as excessive fertilization, cultivation, cover cropping, and herbicide use. Dr. Schreiner also previews ongoing research from the , which is helping redefine best practices for tissue sampling and nutrient timing. Whether you’re planting a new vineyard or managing an established one, this episode offers an essential look at how understanding underground biology can elevate your vineyard management decisions. In this episode, you will hear: How grapevines form symbiotic relationships with mycorrhizal fungi Why phosphorus is the most important nutrient supported by AMF The effects of nitrogen and phosphorus fertilization on fungal colonization Whether commercial AMF inoculants are worth the investment Practices that promote healthy fungal populations in vineyard soil Follow and Review: If you enjoyed this episode, be sure to follow the podcast and leave a 5-star review on Apple Podcasts! Your support helps us reach more listeners. 💜 Click the ‘+’ in the top right corner of Apple Podcasts to follow now. Resources: If you are starting a vineyard or thinking about starting a vineyard, apply to be on the podcast for Fritz’s help planning your vineyard – Come grow with Fritz through ! Save $75 off your first year of membership with the code Underground at checkout. Today’s Guest: Dr. R. Paul Schreiner is a research plant physiologist specializing in research on grapevine physiology with a focus on plant nutrition and the functioning of roots and arbuscular mycorrhizal fungi. He is currently working with the Project as a co-director, leading the plant nutrition and product quality group. Connect with Paul through the High Resolution Vineyard Nutrient Management Project: . Episode Sponsor: Today’s episode was brought to you by the Inside Winemaking podcast. Thank you to the Inside Winemaking podcast for sponsoring today’s episode. To learn more about the art & science of winemaking with Jim Duane, visit and listen to the Inside Winemaking podcast on your favorite podcast app with new episodes releasing every other Tuesday. Episode Credits If you like this podcast and are thinking of creating your own, consider talking to my producer, Emerald City Productions. They helped me grow and produce the podcast you are listening to right now. Find out more at . Let them know we sent you.
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074: Variation in Young Vine Training in Diverse Climates
06/24/2025
074: Variation in Young Vine Training in Diverse Climates
In this solo episode, we take a deep dive into the many variables that influence young vine training in different climates. Listeners will gain a clear understanding of how climate, trellis selection, rootstock vigor, and regional weather risks shape vine training strategies. Fritz explains how cold-climate growers often rely on double trunks or “spare parts viticulture” to prepare for winter damage, while warmer-climate vineyards may benefit from fast-tracking techniques like green topping and one-shoot training for quicker vineyard establishment. We walk through scenarios where single-trunk systems are ideal, when to consider double trunks, and how the practice of renewing trunks every few years can extend vine longevity. We also break down when to use green topping, how to avoid bull canes, and why mature leaves on developing trunks should never be removed. Growers will leave this episode with specific, actionable tips to match their training approach to their unique vineyard conditions, helping them improve both short-term success and long-term vineyard health. In this episode, you will hear: Differences between trellis systems and vine training systems When and why to use single vs. double trunk strategies What “spare parts viticulture” is and where it makes sense Green topping and other fast-tracking methods explained How to manage training for high- and low-vigor vineyard sites Follow and Review: If you enjoyed this episode, be sure to follow the podcast and leave a 5-star review on Apple Podcasts! Your support helps us reach more listeners. 💜 Click the ‘+’ in the top right corner of Apple Podcasts to follow now. Resources: Check out Fritz’s additional resources to help you care for your vines and vineyard in years 1-3 at . If you have questions about today’s episode or ideas for future episodes, go to and click the Ask Fritz button. Episode Sponsor: Today’s episode was brought to you by Sunridge Nurseries and the Inside Winemaking podcast. Thank you to Sunridge Nurseries for sponsoring today’s episode. Sunridge Nurseries is the exclusive nursery sponsor of the Vineyard Underground podcast. They have been a family-owned company for over 45 years, and their dedicated focus on quality and consistency has grown them into the largest supplier of grapevines in both North and South America and the industry leader in nursery standards. Visit them today at and mention the code Underground to receive a podcast listener discount on your vine order. Thank you to the Inside Winemaking podcast for sponsoring today’s episode. To learn more about the art & science of winemaking with Jim Duane, visit and listen to the Inside Winemaking podcast on your favorite podcast app with new episodes releasing every other Tuesday. Episode Credits If you like this podcast and are thinking of creating your own, consider talking to my producer, Emerald City Productions. They helped me grow and produce the podcast you are listening to right now. Find out more at . Let them know we sent you.
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073: Soil Nutrient Interactions and the Role of Potassium in Eastern Vineyards with Dr. Jaclyn Fiola
06/10/2025
073: Soil Nutrient Interactions and the Role of Potassium in Eastern Vineyards with Dr. Jaclyn Fiola
In this episode of Vineyard Underground, Fritz welcomes soil scientist Dr. Jaclyn Fiola for an in-depth discussion on one of viticulture’s most misunderstood nutrients — potassium. Drawing from her recent research and extensive fieldwork across the Mid-Atlantic region, Jaclyn breaks down how potassium behaves differently from other macronutrients, where it originates in the soil, and what makes its availability so complex for grape growers. Fritz and Jaclyn explore why vineyards in the Eastern U.S. often see discrepancies between soil and tissue potassium levels and how that can impact grape quality, vine health, and ultimately wine pH. They dive into the implications of both potassium deficiency and excess, emphasizing how water availability and soil mineralogy play pivotal roles in potassium uptake. Growers will also learn why standard soil tests may not give the full picture — and why plant tissue testing, particularly whole-leaf sampling at veraison, is often more reliable. Jaclyn shares the results of her groundbreaking study, highlighting best practices for sampling, how to interpret potassium levels accurately, and actionable steps for managing young versus mature vines. Whether you're planting a new vineyard or managing high potassium levels in an existing one, this episode equips you with the tools to make more informed nutrient management decisions. In this episode, you will hear: Potassium largely comes from soil parent material, not organic matter, making it harder to assess with traditional testing. Moisture-rich soils increase potassium availability, especially in non-irrigated Eastern vineyards. Whole-leaf tissue testing at veraison gives the most accurate indication of potassium status in grapevines. Too much potassium can raise wine pH, affecting mouthfeel, color, and shelf life. Before applying potassium fertilizers, understand your soil minerals and use targeted tissue testing to avoid overcorrection. Follow and Review: If you enjoyed this episode, be sure to follow the podcast and leave a 5-star review on Apple Podcasts! Your support helps us reach more listeners. 💜 Click the ‘+’ in the top right corner of Apple Podcasts to follow now. Resources: Come grow with Fritz through ! Save $75 off your first year of membership with the code Underground at checkout. If you are starting a vineyard or thinking about starting a vineyard, apply to be on the podcast for Fritz’s help planning your vineyard - Today’s Guest: Dr. Jaclyn Fiola is a soil scientist who specializes in vineyard soils and soil science pedagogy. She works as an Assistant Professor of Soil and Environmental Science at Delaware Valley University. Connect with , her, and view her . Episode Sponsor: Today’s episode was brought to you by Vigneron Toy Store and the Inside Winemaking podcast. Thank you to Vigneron Toy Store for sponsoring today’s episode. Vigneron Toy Store specializes in Harvesters, Sprayers, Frost Mitigation Equipment, Canopy Management Trimmers, and more. As grape growers themselves, they can expertly help you determine the best equipment for your specific vineyard needs. And, as a special offer for our podcast listeners, you can save 5% off in-stock machines by entering the promo code Underground on the contact form at . Thank you to the Inside Winemaking podcast for sponsoring today’s episode. To learn more about the art & science of winemaking with Jim Duane, visit and listen to the Inside Winemaking podcast on your favorite podcast app with new episodes releasing every other Tuesday. Episode Credits If you like this podcast and are thinking of creating your own, consider talking to my producer, Emerald City Productions. They helped me grow and produce the podcast you are listening to right now. Find out more at . Let them know we sent you.
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072: How Research Influences Our Spray Program Decisions with Dr. Katie Gold
05/27/2025
072: How Research Influences Our Spray Program Decisions with Dr. Katie Gold
In this episode of Vineyard Underground, host Fritz Westover welcomes Dr. Katie Gold, Assistant Professor of Grape Pathology at Cornell University, for a deep dive into how research drives informed spray program decisions in the vineyard. Dr. Gold brings her extensive expertise in grape disease management to the conversation, shedding light on how growers can use scientific data and field research to refine their fungicide strategies and protect their crops more effectively. Fritz and Katie explore the critical role of disease forecasting models, including how they are developed and validated, and why it’s important for growers to go beyond the “calendar-based” approach to spraying. Dr. Gold emphasizes the value of using weather-based decision support tools and highlights ongoing research aimed at improving the precision and sustainability of vineyard disease management. Listeners will gain a better understanding of how academic research translates into real-world applications, from identifying pathogen resistance patterns to making timely fungicide applications. Katie also discusses the impact of underutilized research, how misinformation can spread in farming communities, and why continuous learning and outreach are essential for successful vineyard operations. In this episode, you will hear: Research-based spray programs outperform calendar-based models Disease forecasting tools help optimize fungicide timing and efficiency Growers should verify the reliability of sources when seeking vineyard advice Understanding fungicide resistance is key to long-term vineyard health Practical research translation is essential for sustainable vineyard practices Follow and Review: If you enjoyed this episode, be sure to follow the podcast and leave a 5-star review on Apple Podcasts! Your support helps us reach more listeners. 💜 Click the ‘+’ in the top right corner of Apple Podcasts to follow now. Resources: If you are starting a vineyard or thinking about starting a vineyard, apply to be on the podcast for Fritz’s help planning your vineyard - Come grow with Fritz through ! Save $75 off your first year of membership with the code Underground at checkout. Today’s Guest: Dr. Katie Gold is an Assistant Professor of Grape Pathology at Cornell University, where she holds primary research and extension responsibilities for grape disease management in New York State. Connect with Katie: View her research work: Episode Sponsor: Today’s episode was brought to you by Clemens Technologies. Clemens Technologies is the market leader in machinery for all elements of vineyard management. Visit and provide the code UNDERGROUND to receive 5% off your order of in-stock machinery. Or reach out to Thomas Clemens directly at with any questions. Episode Credits If you like this podcast and are thinking of creating your own, consider talking to my producer, Emerald City Productions. They helped me grow and produce the podcast you are listening to right now. Find out more at . Let them know we sent you.
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071: Demystifying Spray Adjuvants with Paul Crout
05/13/2025
071: Demystifying Spray Adjuvants with Paul Crout
In this episode, we are joined by a friend and repeat guest, Paul Crout. Paul is a leading pest control advisor, certified crop control advisor, and one of the foremost experts on wine grape nutrition, spray adjuvants, and more in the ag and viticulture realm. He currently works as a leading agronomist with Helena Agra Enterprises in California, and he has the honor of being the only guest we've had on the podcast three times! Adjuvants can be a dry topic, but we promise this discussion provides a lot of valuable take-home information. It’s one of those episodes where you will want to take notes. Listen in and don’t forget to download the Spray Adjuvants to Increase Pesticide Efficacy Grower Guide. In this episode, you will hear: What adjuvants are, when to use them, and which ones to use The two main categories of adjuvants - surfactants and special purpose When to use buffers and drift control agents The importance of knowing your water’s pH before adding an adjuvant Differences between non-ionic surfactants and organosilicone surfactants Understanding the use of methylated seed oils for tank mixing and pesticide application Follow and Review: We’d love for you to follow us if you haven’t yet. Click the ‘+ Follow’ button in the top right corner of your Apple Podcasts app. We’d love it even more if you could drop a review or 5-star rating over on . Simply select “Ratings and Reviews” and “Write a Review,” then a quick line with your favorite part of the episode. It only takes a second, and it helps spread the word about the podcast. Resources: Download Fritz’s member-only available to podcast listeners through August 2025. If you are starting a vineyard or thinking about starting a vineyard, apply to be on the podcast for Fritz’s help planning your vineyard - Come grow with Fritz through ! Save $75 off your first year of membership with the code Underground at checkout. Today’s Guest: Paul Crout is a Pest Control Advisor and Certified Crop Advisor, and one of the foremost experts on wine grape nutrition and spray adjuvants. He currently works as an Agronomist with Helena Agri-Enterprises in California. Connect with Paul on and learn more about being with Helena. Episode Sponsor: Today’s episode was brought to you by SensorInsight and by Vigneron Toy Store. Thank you to SensorInsight for sponsoring today’s episode. SensorInsight is a leader in vineyard soil moisture and weather monitoring. SensorInsight designs state-of-the-art, remote satellite monitoring of soil moisture and weather, bringing actionable information for your vineyard operations straight to your phone, with real-time data so you can best decide when to turn on your irrigation, how long to run the system, and learn how the dynamics of soil moisture can change over a given season. Visit them today at . And don’t forget to mention the code Underground to receive a discount on your SensorInsight solution. Thank you to Vigneron Toy Store for sponsoring today’s episode. Vigneron Toy Store specializes in Harvesters, Sprayers, Frost Mitigation Equipment, Canopy Management Trimmers, and more. As grape growers themselves, they can expertly help you determine the best equipment for your specific vineyard needs. And, as a special offer for our podcast listeners, you can save 5% off in-stock machines by entering the promo code Underground on the contact form at . Episode Credits If you like this podcast and are thinking of creating your own, consider talking to my producer, Emerald City Productions. They helped me grow and produce the podcast you are listening to right now. Find out more at . Let them know we sent you.
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070: Alternative Canopy Management Practices
04/29/2025
070: Alternative Canopy Management Practices
There are three alternative canopy management practices that generate a lot of questions and sometimes confusion from growers. So, in today’s solo episode I will cover these three canopy management practices - extreme leaf removal, shoot tipping, and palissage. I’ll go over each of these practices and discuss when they should be used to benefit your vineyard and in what instances these practices should be avoided. In this episode, you will hear: The potential outcomes of extreme leaf removal The impact of extreme leaf removal on grapevine physiology and disease prevention Creative applications of shoot tipping or hedging The palissage method as an alternative to traditional shoot hedging New approaches surrounding the palissage method Follow and Review: We’d love for you to follow us if you haven’t yet. Click the ‘+ Follow’ button in the top right corner of your Apple Podcasts app. We’d love it even more if you could drop a review or 5-star rating over on . Simply select “Ratings and Reviews” and “Write a Review” then a quick line with your favorite part of the episode. It only takes a second, and it helps spread the word about the podcast. Resources: Access more canopy management resources at . Come grow with Fritz through ! Save $75 off your first year of membership with the code Underground at checkout. Episode Sponsor: Today’s episode was brought to you by Shellt Grow Tubes and by SensorInsight. Thank you to Shellt Grow Tubes for sponsoring today’s episode. Shellt makes the ultimate grow tubes for grape vines and orchard trees. Their grow tubes are reusable, recyclable, and designed to grow with your vineyard by clicking together for taller or wider coverage. I exclusively recommend Shellt Grow Tubes to the growers I work with. Visit and order with the code UNDERGROUND to save 15% off all online orders plus free shipping within the continental United States. Thank you to SensorInsight for sponsoring today’s episode. SensorInsight is a leader in vineyard soil moisture and weather monitoring. SensorInsight designs state-of-the-art, remote satellite monitoring of soil moisture and weather, bringing actionable information for your vineyard operations straight to your phone, with real-time data so you can best decide when to turn on your irrigation, how long to run the system, and learn how the dynamics of soil moisture can change over a given season. Visit them today at . And don’t forget to mention the code Underground to receive a discount on your SensorInsight solution. Episode Credits If you like this podcast and are thinking of creating your own, consider talking to my producer, Emerald City Productions. They helped me grow and produce the podcast you are listening to right now. Find out more at . Let them know we sent you.
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069: When Are Insects Actually a Problem with Dr. Rufus Isaacs
04/15/2025
069: When Are Insects Actually a Problem with Dr. Rufus Isaacs
Growers need to know which insects they need to treat and which they can ignore. While some insects pose a threat to grapevines, others can actually benefit them. In this episode, we have a discussion with the Distinguished Professor and Berry Crops Entomology Extension Specialist for Michigan State University, Dr. Rufus Isaacs, on this topic. Understanding when and what insects are actually a problem versus those that are hanging out or even providing a benefit is necessary for the health of your vineyard. In this episode, you will hear: The insects that are most destructive during bud burst in the spring The insects that are destructive during bloom Methods and products for prevention and treatment of various pests How to identify thrips The importance of weekly scouting and knowing what to look for Follow and Review: We’d love for you to follow us if you haven’t yet. Click the ‘+ Follow’ button in the top right corner of your Apple Podcasts app. We’d love it even more if you could drop a review or 5-star rating over on . Simply select “Ratings and Reviews” and “Write a Review” then a quick line with your favorite part of the episode. It only takes a second, and it helps spread the word about the podcast. Resources: Attend Fritz’s upcoming Winning with Shoot Thinning FREE LIVE Virtual Learning event on April 28th at 5:00 PM Central and ask your question live. Register for FREE: . Come grow with Fritz through ! Save $75 off your first year of membership with the code Underground at checkout. Download the Michigan State Mobile Guide for Grape IPM: Listen to the related episode: Episode 21 - The Rise of the Spotted Lanternfly with Dr. Michela Centinari - Today’s Guest: Dr. Rufus Isaacs is a Distinguished Professor and Berry Crops Entomology Extension Specialist for Michigan State University. Connect with Rufus: View his research work: Episode Sponsor: Today’s episode was brought to you by SensorInsight and by Vigneron Toy Store. Thank you to SensorInsight for sponsoring today’s episode. SensorInsight is a leader in vineyard soil moisture and weather monitoring. SensorInsight designs state-of-the-art, remote satellite monitoring of soil moisture and weather, bringing actionable information for your vineyard operations straight to your phone, with real-time data so you can best decide when to turn on your irrigation, how long to run the system, and learn how the dynamics of soil moisture can change over a given season. Visit them today at . And don’t forget to mention the code Underground to receive a discount on your SensorInsight solution. Thank you to Vigneron Toy Store for sponsoring today’s episode. Vigneron Toy Store specializes in Harvesters, Sprayers, Frost Mitigation Equipment, Canopy Management Trimmers, and more. As grape growers themselves, they can expertly help you determine the best equipment for your specific vineyard needs. And, as a special offer for our podcast listeners, you can save 5% off in-stock machines by entering the promo code Underground on the contact form at . Episode Credits If you like this podcast and are thinking of creating your own, consider talking to my producer, Emerald City Productions. They helped me grow and produce the podcast you are listening to right now. Find out more at . Let them know we sent you.
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068: The Evolution of Vineyard Floor Management with Alice Wise
04/01/2025
068: The Evolution of Vineyard Floor Management with Alice Wise
In this episode, we are joined by Alice Wise from Cornell University to talk about vineyard floor management and how concepts and best practices for vineyard floor management have evolved in recent years. Alice has been following trends and successes for grape growers in Long Island, New York, and across the Mid-Atlantic in general with her extension and research roles, and we know you are going to love what she has to share with us. Listen in to discover the evolution of vineyard floor management today! In this episode, you will hear: Why growers decided they wanted a change in their management practices. About Alice’s sustainability program on the East Coast. The types of mechanical cultivation that were tried and their problems. What a lysimeter is and how it’s used. How to do your own cover crop research. Follow and Review: We’d love for you to follow us if you haven’t yet. Click the ‘+ Follow’ button in the top right corner of your Apple Podcasts app. We’d love it even more if you could drop a review or 5-star rating over on . Simply select “Ratings and Reviews” and “Write a Review” then a quick line with your favorite part of the episode. It only takes a second, and it helps spread the word about the podcast. Resources: Attend Fritz’s upcoming Winning with Shoot Thinning FREE LIVE Virtual Learning event on April 28th at 5:00 PM Central and ask your question live. Register for FREE . If you have questions about today’s episode or ideas for future episodes, go to and click the Ask Fritz button. Come grow with Fritz through ! Save $75 off your first year of membership with the code Underground at checkout. Today’s Guest: Alice Wise is a Viticulture Researcher with the Cornell Cooperative Extension of Suffolk County Connect with Alice at Episode Sponsor: Today’s episode was brought to you by Clemens Technologies and by Shellt Grow Tubes. Clemens Technologies is the market leader in machinery for all elements of vineyard management. Visit and provide the code UNDERGROUND to receive 5% off your order of in-stock machinery. Or reach out to Thomas Clemens directly at with any questions. Shellt makes the ultimate grow tubes for grape vines and orchard trees. Their grow tubes are reusable, recyclable, and designed to grow with your vineyard by clicking together for taller or wider coverage. I exclusively recommend Shellt Grow Tubes to the growers I work with. Visit and order with the code UNDERGROUND to save 15% off all online orders plus free shipping within the continental United States. Episode Credits If you like this podcast and are thinking of creating your own, consider talking to my producer, Emerald City Productions. They helped me grow and produce the podcast you are listening to right now. Find out more at . Let them know we sent you.
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067: Growing for Sparkling Wines in Alternative Regions with Mark Wenzel & Kaibab Sauvage
03/18/2025
067: Growing for Sparkling Wines in Alternative Regions with Mark Wenzel & Kaibab Sauvage
In this episode, we explore the world of sparkling wine production in unconventional regions with Mark Wenzel from Illinois Sparkling Wine Company and August Hill Winery, and Kaibab Sauvage from Sauvage Spectrum Winery in Colorado. These winemakers discuss their process of adapting viticulture to thrive in challenging climates, turning high-acid grapes into naturally sparkling wines without relying on conventional carbonation methods. The episode covers their brands' evolutions, vineyard management techniques, and creative varietal blends. Additionally, Mark and Kaibab share about vineyard management, yield strategies, and future innovations in sparkling wine. Listen in for inspiration and practical advice for grape growers and winemakers interested in expanding into non-traditional locales. In this episode, you will hear: Sparkling wine production in non-traditional regions like Illinois and Colorado. Adapting viticulture for cold climates. The transition from carbonated to naturally sparkling wines. The varieties that Mark and Kaibab like to use. Vineyard management strategies, including yield management and trellis innovations. Tips for harvesting and managing vineyards specifically for sparkling wine production. Follow and Review: We’d love for you to follow us if you haven’t yet. Click the ‘+ Follow’ button in the top right corner of your Apple Podcasts app. We’d love it even more if you could drop a review or 5-star rating over on . Simply select “Ratings and Reviews” and “Write a Review” then a quick line with your favorite part of the episode. It only takes a second, and it helps spread the word about the podcast. Resources: Do you have a question for Fritz? Attend Fritz’s upcoming Winning with Shoot Thinning FREE LIVE Virtual Learning event on April 28th at 5:00 PM Central and ask your question live. Register for FREE . Or go to and click the Ask Fritz button, to submit a question online for Fritz. Today’s Guests: Mark Wenzel is the founder and owner of August Hill Winery and the Illinois Sparkling Company. Connect with Mark at or or follow him at or Kaibab Sauvage is the owner and manager of Colorado Vineyard Specialists LLC and the co-founder of Sauvage Spectrum Estate Winery & Vineyard. Connect with Kaibab at or follow him at or Episode Sponsor: Today’s episode was brought to you by Shellt Grow Tubes and by Clemens Technologies. Shellt makes the ultimate grow tubes for grape vines and orchard trees. Their grow tubes are reusable, recyclable, and designed to grow with your vineyard by clicking together for taller or wider coverage. I exclusively recommend Shellt Grow Tubes to the growers I work with. Visit and order with the code UNDERGROUND to save 15% off all online orders plus free shipping within the continental United States. Clemens Technologies is the market leader in machinery for all elements of vineyard management. Visit and provide the code UNDERGROUND to receive 5% off your order of in-stock machinery. Or reach out to Thomas Clemens directly at with any questions. Episode Credits If you like this podcast and are thinking of creating your own, consider talking to my producer, Emerald City Productions. They helped me grow and produce the podcast you are listening to right now. Find out more at . Let them know we sent you.
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066: Q&A – Fritz Answers Early Season Grower Questions
03/04/2025
066: Q&A – Fritz Answers Early Season Grower Questions
We are back with another one of our favorite types of episodes - a Q&A, where Fritz answers questions from growers like you, from all over the country. In today’s episode, we focus on questions pertaining to early season growing. This includes knowing when to prune and how much and knowing what to do about retraining trunks or working around tricky sections in your vineyard. Listen in now as you get ready for the upcoming growing season. In this episode, you will hear: What to do if bud burst comes early How to predict how much water per acre is needed to spray as the canopy size increases What to do when you have one section that is sensitive to sulfur What to do when retraining trunks Is it okay to cut shoots back to the trunk when there is still a chance of a hard freeze Advantages of using a pruning wound sealant and when to use it Follow and Review: We’d love for you to follow us if you haven’t yet. Click the ‘+ Follow’ button in the top right corner of your Apple Podcasts app. We’d love it even more if you could drop a review or 5-star rating over on . Simply select “Ratings and Reviews” and “Write a Review” then a quick line with your favorite part of the episode. It only takes a second, and it helps spread the word about the podcast. Resources: Do you have a question for Fritz? We’ve got 3 ways for you to get it answered! Attend Fritz’s upcoming Winning with Shoot Thinning FREE LIVE Virtual Learning event on April 28th at 5:00 PM Central and ask your question live. Register for FREE . Attend an upcoming Live Vineyard Advising time with Fritz to ask your question live. Go to to sign up. Go to and click the Ask Fritz button, to submit a question online for Fritz. Episode Sponsor: Today’s episode was brought to you by Shellt Grow Tubes and by Bahco Tools. Shellt makes the ultimate grow tubes for grape vines and orchard trees. Their grow tubes are reusable, recyclable, and designed to grow with your vineyard by clicking together for taller or wider coverage. I exclusively recommend Shellt Grow Tubes to the growers I work with. Visit and order with the code UNDERGROUND15 to save 15% off all online orders plus free shipping within the continental United States. As innovators for more than 165 years, Bahco has introduced the most advanced tools in the world, and Bacho products are manufactured in factories across Europe. I exclusively prune with the Bacho (size medium). Visit to find a dealer near you to get the best pruning tools on the market, along with loppers, hedging tools, cutting blades, files, and more. Episode Credits If you like this podcast and are thinking of creating your own, consider talking to my producer, Emerald City Productions. They helped me grow and produce the podcast you are listening to right now. Find out more at . Let them know we sent you.
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065: Mechanizing Your Vineyard from the Start with Dr. Matthew Fidelibus & Alan Thibault
02/18/2025
065: Mechanizing Your Vineyard from the Start with Dr. Matthew Fidelibus & Alan Thibault
Mechanizing a vineyard can lead to significant efficiency gains and cost savings, but it's important to start planning for mechanization early in the vineyard design process. Many new growers overlook this step, which can impact their adaptability for mechanization in the future. In this episode, we have a conversation with Dr. Matthew Fidelibus from UC Davis and Alan Thibault from Ashton Creek Vineyard and Vigneron Toy Store on the best mechanization practices from the start. By considering mechanization from the beginning, vineyard owners can make sure their operations are set up for success and remain competitive in the ever-evolving wine industry. In this episode, you will hear: How to start with mechanization from the beginning Why you should start planning for mechanization at site selection Challenges and benefits of mechanizing vineyard training systems and retrofitting existing vineyards Importance of vineyard uniformity for successful mechanization Economic considerations and strategic equipment investments for vineyard operations Follow and Review: We’d love for you to follow us if you haven’t yet. Click the ‘+ Follow’ button in the top right corner of your Apple Podcasts app. We’d love it even more if you could drop a review or 5-star rating over on . Simply select “Ratings and Reviews” and “Write a Review” then a quick line with your favorite part of the episode. It only takes a second, and it helps spread the word about the podcast. Resources: View the soil trafficability website mentioned in the episode - If you’re starting a vineyard or thinking about starting a vineyard, visit to get Fritz’s online Prospective Winegrape Grower Course to help you get your vineyard planned and planted correctly from the start. Use the code PODCAST at check out to save $89.00 as a thank you for being a podcast listener. If you have questions about today’s episode or ideas for future episodes, go to and click the Ask Fritz button. Today’s Guest: Dr. Matthew Fidelibus is an extension specialist in the Department of Viticulture and Enology, UC Davis. Connect with Matthew and view his research - or follow him at Alan Thibault is the Winemaker & Vineyard Manager at and the co-owner of Vigneron Toy Store. Connect with Alan at or and follow him at @ and @ . Episode Sponsor: Thank you to Vigneron Toy Store for sponsoring today’s episode. Vigneron Toy Store specializes in Harvesters, Sprayers, Frost Mitigation Equipment, Canopy Management Trimmers, and more. As grape growers themselves, they can expertly help you determine the best equipment for your specific vineyard needs. And, as a special offer for our podcast listeners, you can save 5% off in-stock machines by entering the promo code Underground on the contact form at . Thank you to SensorInsight for sponsoring today’s episode. SensorInsight is a leader in vineyard soil moisture and weather monitoring. SensorInsight designs state-of-the-art, remote satellite monitoring of soil moisture and weather, bringing actionable information for your vineyard operations straight to your phone, with real-time data so you can best decide when to turn on your irrigation, how long to run the system, and learn how the dynamics of soil moisture can change over a given season. Visit them today at . And don’t forget to mention the code Underground to receive a discount on your SensorInsight solution. Episode Credits If you like this podcast and are thinking of creating your own, consider talking to my producer, Emerald City Productions. They helped me grow and produce the podcast you are listening to right now. Find out more at . Let them know we sent you.
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064: Growing Grapes Around a World – Mexico with Alexandro Eguiarte & Francisco Verastegui
02/04/2025
064: Growing Grapes Around a World – Mexico with Alexandro Eguiarte & Francisco Verastegui
From the sun-drenched fields of Jalisco to the high-altitude terrains of Coahuila, Mexican winemakers like Alexandro Eguiarte of Viñedo Evangelista and Francisco Verastegui of Vinicola Refran Winery & Vineyard are leveraging the diverse conditions to produce distinctive wines that reflect the country's rich terroir. As the industry expands, it brings with it both opportunities and challenges that shape the future of viticulture in the region. Listen in to this conversation with Alexandro and Francisco and learn about the wine and grape growing industries in Mexico and how they have evolved over the past couple of decades. In this episode, you will hear: The evolution of grape growing in Mexico and the transition from brandy to tequila to wine The effect of tourism on grape growing in Mexico The climates in Jalisco and Coahuila and how they affect viticultural efforts Labor concerns and how to train workers effectively The challenges that come with growing grapes in these areas of Mexico Follow and Review: We’d love for you to follow us if you haven’t yet. Click the ‘+ Follow’ button in the top right corner of your Apple Podcasts app. We’d love it even more if you could drop a review or 5-star rating over on . Simply select “Ratings and Reviews” and “Write a Review” then a quick line with your favorite part of the episode. It only takes a second, and it helps spread the word about the podcast. Resources: If you have questions about today’s episode or ideas for future episodes, go to and click the Ask Fritz button. Come grow with Fritz through ! Save $75 off your first year of membership with the code Underground at checkout. Today’s Guests: Connect with Alexandro Eguiarte of Viñedo Evangelista in Jalisco, México and follow them: Connect with Francisco Verastegui of Vinicola Refran Winery & Vineyard in Coahuila, Mexico and follow them: Episode Sponsor: Today’s episode was brought to you by Sunridge Nurseries and by SensorInsight Thank you to Sunridge Nurseries for sponsoring today’s episode. Sunridge Nurseries is the exclusive nursery sponsor of the Vineyard Underground podcast. They have been a family-owned company for over 45 years and their dedicated focus on quality and consistency has grown them into the largest supplier of grapevines in both North and South America and the industry leader in nursery standards. Visit them today at and mention the code Underground to receive a podcast listener discount on your vine order. Thank you to SensorInsight for sponsoring today’s episode. SensorInsight is a leader in vineyard soil moisture and weather monitoring. SensorInsight designs state-of-the-art, remote satellite monitoring of soil moisture and weather, bringing actionable information for your vineyard operations straight to your phone, with real-time data so you can best decide when to turn on your irrigation, how long to run the system, and learn how the dynamics of soil moisture can change over a given season. Visit them today at . And don’t forget to mention the code Underground to receive a discount on your SensorInsight solution. Episode Credits If you like this podcast and are thinking of creating your own, consider talking to my producer, Emerald City Productions. They helped me grow and produce the podcast you are listening to right now. Find out more at . Let them know we sent you.
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063: Pruning Wound Disease Myth Busting
01/21/2025
063: Pruning Wound Disease Myth Busting
When you grow up in the country with the most acreage of grapes, it only makes sense that you grow up to be a plant pathologist and research scientist in the world of viticulture. That was the case for Dr. José Ramón Úrbez-Torres. His studies took him from Spain to France, to California, and to Canada, where he studied under the best and gained valuable knowledge on grape growing and plant pathology. In this episode, we discuss pruning wound disease and bust some of the common myths surrounding the topic. In this episode, you will hear: The significance of regional conditions on pruning strategies. The role of xylem vessels in disease spread and cultivar susceptibility. The importance of timing in pruning to minimize spore infection risk. The effectiveness of biological controls in vineyard management. The impact of pre-pruning on disease management and whether protection is necessary. The influence of moisture and spore release on fungal infection rates in vineyards. Follow and Review: We’d love for you to follow us if you haven’t yet. Click the ‘+ Follow’ button in the top right corner of your Apple Podcasts app. We’d love it even more if you could drop a review or 5-star rating over on . Simply select “Ratings and Reviews” and “Write a Review” then a quick line with your favorite part of the episode. It only takes a second, and it helps spread the word about the podcast. Resources: Visit to access, watch, or listen to top pruning content from Fritz including links to other podcast episodes related to pruning wound diseases. If you have questions about today’s episode or ideas for future episodes, go to and click the Ask Fritz button. Today’s Guest: Dr. José Ramón Úrbez-Torres is a research scientist and plant pathologist for the Canadian Agriculture Department. Connect with Jose via email and view his work - Episode Sponsor: Today’s episode was brought to you by Bahco Tools and by Sunridge Nurseries. Thank you to Bahco for sponsoring today’s episode. As innovators for more than 165 years, Bahco has introduced the most advanced tools in the world, and Bacho products are manufactured in factories across Europe. I exclusively prune with the Bacho (size medium). Visit to find a dealer near you to get the best pruning tools on the market, along with loppers, hedging tools, cutting blades, files, and more. Thank you to Sunridge Nurseries for sponsoring today’s episode. Sunridge Nurseries is the exclusive nursery sponsor of the Vineyard Underground podcast. They have been a family-owned company for over 45 years and their dedicated focus on quality and consistency has grown them into the largest supplier of grapevines in both North and South America and the industry leader in nursery standards. Visit them today at and mention the code Underground to receive a podcast listener discount on your vine order. Episode Credits If you like this podcast and are thinking of creating your own, consider talking to my producer, Emerald City Productions. They helped me grow and produce the podcast you are listening to right now. Find out more at . Let them know we sent you.
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062: The Timing of Vineyard Management Tasks is Everything With Matt Doyle
01/07/2025
062: The Timing of Vineyard Management Tasks is Everything With Matt Doyle
Do you know what to prioritize in each stage of the growing season? In this episode, we broke down the priorities with vineyard management expert Matt Doyle based on the three main phases: bud burst through bloom, fruit set through veraison, and veraison through harvest. Listen in for a detailed overview of what growers should pay attention to during each stage for a successful growing season. In this episode, you will hear: Matt’s journey from Cornell to California to owning Doyle Vineyard Management in the Finger Lakes region. Strategic diversification in vineyard operations, including leasing vineyards, selling grapes, and offering management services. Techniques for handling diverse grape varieties and seasonal challenges like spring frosts and mechanization. Planning and executing vineyard tasks from bud burst through harvest. Post-harvest strategies for maintaining vineyard health and productivity. Follow and Review: We’d love for you to follow us if you haven’t yet. Click the ‘+ Follow’ button in the top right corner of your Apple Podcasts app. We’d love it even more if you could drop a review or 5-star rating over on . Simply select “Ratings and Reviews” and “Write a Review” then a quick line with your favorite part of the episode. It only takes a second, and it helps spread the word about the podcast. Resources: Register for Fritz’s FREE virtual live learning event, Breaking Bad Pruning Habits, on January 8th at 5 pm CST: If you have questions about today’s episode or ideas for future episodes, go to and click the Ask Fritz button. Today’s Guest: Matt Doyle is the founder and owner of Doyle Vineyard Management in the Finger Lakes region of New York. Doyle Vineyard Management is a premier grape grower within the Finger Lakes, NY region, as well as a full-service vineyard management company specializing in providing all aspects of custom vineyard management and consulting. Connect with Matt at or or Episode Sponsors: Today’s episode was brought to you by Bahco Tools and by Shellt Grow Tubes. Bahco makes the most precise and comfortable pruning shears on the market, which is why I have exclusively pruned with shears (size medium) for years because my hand gets much less fatigued thanks to their ergonomic design. Visit to find a dealer near you to get the best pruning tools on the market including their brand new P8 model precision shears, along with vineyard and orchard loppers, hedge shears, files, cutting blades, hand tools, and more. Shellt makes the ultimate grow tubes for grape vines and orchard trees. Their grow tubes are reusable, recyclable, and designed to grow with your vineyard by clicking together for taller or wider coverage. I exclusively recommend Shellt Grow Tubes to the growers I work with. Visit and order with the code UNDERGROUND15 to save 15% off all online orders plus free shipping within the continental United States. Episode Credits If you like this podcast and are thinking of creating your own, consider talking to my producer, Emerald City Productions. They helped me grow and produce the podcast you are listening to right now. Find out more at . Let them know we sent you.
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061: In the Vines since 1999
12/24/2024
061: In the Vines since 1999
Since we are nearing the end of 2024, this episode is a light-hearted conversation between four viticulture friends. As some of you may know, I started my career in viticulture in 1999. Three of my friends also began their grape growing journey that same year: Erin Amaral, Paul Crout, and Randy Heinzen. In this episode, I’m joined by Erin, Paul, and Randy for a conversation about our experiences in the vineyard industry over the past 25 years. Listen in to this fun episode as we talk about how the industry has grown and changed and share our favorite stories over the last two and a half decades. In this episode, you will hear: What the viticulture industry used to be like back in 1999 What has changed in the past 25 years Technological advancements and research improvements What we can expect for the future of viticulture Follow and Review: We’d love for you to follow us if you haven’t yet. Click the ‘+ Follow’ button in the top right corner of your Apple Podcasts app. We’d love it even more if you could drop a review or 5-star rating over on . Simply select “Ratings and Reviews” and “Write a Review” then a quick line with your favorite part of the episode. It only takes a second, and it helps spread the word about the podcast. Resources: Register for Fritz’s FREE virtual live learning event, Breaking Bad Pruning Habits on January 8th at 5 pm CST: . If you have questions about today’s episode or ideas for future episodes, go to and click the Ask Fritz button. Today’s Guests: Erin Amaral is a vineyard manager for Pacific Coast Farming in San Luis Obispo, California and a licensed Pest Control Advisor. Connect with Erin at or via email at . Paul Crout is a Pest Control Advisor and Certified Crop Advisor, and one of the foremost experts on wine grape nutrition and spray adjuvants. He currently works as an Agronomist with Helena Agri-Enterprises in California. Connect with Paul on or via email at . Randy Heinzen is a global vineyard management expert who has worked with some of the world’s most sought-after vineyards. He is the owner and president of Vineyard Professional Services (VPS) in Paso Robles, CA. VPS currently manages over 4,000 acres across three counties along CA’s Central Coast. Connect with Randy at or via email at . Episode Sponsor: Thank you to our friends over at SensorInsight for sponsoring today’s episode. SensorInsight is a leader in vineyard soil moisture and weather monitoring. SensorInsight designs state-of-the-art, remote satellite monitoring of soil moisture and weather, bringing actionable information for your vineyard operations straight to your phone, with real-time data so you can best decide when to turn on your irrigation, how long to run the system, and learn how the dynamics of soil moisture can change over a given season. Visit them today at . And don’t forget to mention the code Underground to receive a discount on your SensorInsight solution. Episode Credits If you like this podcast and are thinking of creating your own, consider talking to my producer, Emerald City Productions. They helped me grow and produce the podcast you are listening to right now. Find out more at . Let them know we sent you.
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060: Expectations from a Custom Crush with Ryan Horn and Greg Stokes
12/10/2024
060: Expectations from a Custom Crush with Ryan Horn and Greg Stokes
Custom crush facilities are becoming a popular choice for grape growers who want to make wine without the hefty investment of building a full-scale winery. In this episode, industry experts Ryan Horn from Vintner's Vault and Greg Stokes from Ursa Vineyards and Bending Branch Winery share insights on this topic. Listen in for an overview of what a custom crush is, who it is for, and how much you can expect to pay per bottle of finished wine. In this episode, you will hear Advantages of custom crush facilities for grape growers Significance of custom crush services Supply and demand cycles in the grape industry and the role of custom crush facilities Traditional custom crush versus alternative proprietorships Logistics, legal considerations, and potential financial risks involved in custom crush operations Follow and Review: We’d love for you to follow us if you haven’t yet. Click the ‘+ Follow’ button in the top right corner of your Apple Podcasts app. We’d love it even more if you could drop a review or 5-star rating over on . Simply select “Ratings and Reviews” and “Write a Review” then a quick line with your favorite part of the episode. It only takes a second, and it helps spread the word about the podcast. Resources: Register for Fritz’s FREE virtual live learning event, Breaking Bad Pruning Habits, on January 8th at 5 pm CST . Download Fritz’s member-only Crop Estimation Tips guide - If you have questions about today’s episode or ideas for future episodes, go to and click the Ask Fritz button. Today’s Guests: Ryan Horn is an award-winning winemaker and the founder and owner of The Vintner Vault – a leading winery equipment design and consulting company. Website: Email: Greg Stokes is an award-winning winemaker for Ursa Vineyards in the Sierra Foothills of California and Bending Branch Winery in the Texas Hill Country. Websites: & Email: Episode Sponsor: Thank you to Sunridge Nurseries for sponsoring today’s episode. Sunridge Nurseries is the exclusive nursery sponsor of the Vineyard Underground podcast. They have been a family-owned company for over 45 years and their dedicated focus on quality and consistency has grown them into the largest supplier of grapevines in both North and South America and the industry leader in nursery standards. Visit them today at and mention the code Underground to receive a podcast listener discount on your vine order. Episode Credits If you like this podcast and are thinking of creating your own, consider talking to my producer, Emerald City Productions. They helped me grow and produce the podcast you are listening to right now. Find out more at . Let them know we sent you.
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