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455 - The Truth About Seed Starting Mixes with JoeGardener (and Why So Many Fail)

The Beginner's Garden

Release Date: 01/20/2026

468 - Pollinators: Are They Telling You Something About Your Garden? — with Disney Conservation Scientist Morgan Belle show art 468 - Pollinators: Are They Telling You Something About Your Garden? — with Disney Conservation Scientist Morgan Belle

The Beginner's Garden

Struggling with pests or poor pollination in your garden? Wondering how to attract bees, butterflies, and other beneficial insects naturally? In this episode, you’ll learn simple, practical ways to support pollinators and grow a healthier vegetable garden. I’m coming to you from Disney World’s Epcot Flower & Garden Festival, where I had the chance to talk with entomologist Morgan Bell at Butterfly Landing. She shares how pollinators like bees, butterflies, and even wasps play a vital role in your garden ecosystem—and how the small choices you make can have a big impact. We talk...

info_outline 467 - Planting Day: Tomatoes – when to plant and exactly what to do step by step show art 467 - Planting Day: Tomatoes – when to plant and exactly what to do step by step

The Beginner's Garden

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info_outline 466 - Soil: What to Do Before You Plant Anything show art 466 - Soil: What to Do Before You Plant Anything

The Beginner's Garden

Struggling to figure out what your garden soil actually needs? Confused by compost, topsoil, and raised bed mixes? In this episode, you’ll learn simple, practical soil basics to grow healthier plants and improve your garden naturally. Dream to Garden (Now Open!) My step-by-step garden planning course with optional monthly coaching calls to help you plan and grow with confidence. 👉   Key Takeaways Understand the difference between topsoil, compost, and raised bed soil Learn how to build healthy soil for raised beds or in-ground gardens Know how and when to add compost for best...

info_outline 465 - Companion Planting While You’re Actually Planting Your Garden show art 465 - Companion Planting While You’re Actually Planting Your Garden

The Beginner's Garden

Feeling unsure about companion planting when you're actually standing in your garden? You’re not alone. It’s one thing to read charts, but another to decide what goes where in real time. In this episode, you’ll learn how companion planting really works, including spacing, timing, and practical garden layout strategies that make sense. Free download: Companion Planting for Pest Control A simple, practical guide to pairing plants that help naturally reduce pests. 👉 If companion planting has ever felt confusing or overly complicated, this episode will walk you through step-by-step...

info_outline 464 - Planting Day: Potatoes – how to plant and what to expect as they grow underground show art 464 - Planting Day: Potatoes – how to plant and what to expect as they grow underground

The Beginner's Garden

Struggling with poor potato harvests or slow growth? You’re not alone. In this episode, you’ll learn how to plant potatoes step-by-step for stronger plants and better yields. From choosing seed potatoes to soil prep and spacing, this potato planting guide will set you up for success. Potatoes are one of the most rewarding crops you can grow, but planting them correctly makes all the difference. In this episode, I walk you through exactly what to do before planting day, including how to choose the right seed potatoes, whether to chit them, and how to prepare your soil. I’ll also share...

info_outline 463 - Planting Day: Carrots - how to plant and what to expect the first few weeks show art 463 - Planting Day: Carrots - how to plant and what to expect the first few weeks

The Beginner's Garden

Struggling to get carrot seeds to sprout or size up well? In this episode, you’ll learn how to plant carrots with better timing, spacing, watering, and thinning so they grow straight, sweet, and strong. If carrot germination has felt unpredictable, this step-by-step planting guide will help you start with confidence. Carrots can feel simple until you plant them and wait... and wait... and still see bare soil. In today’s Planting Day episode, I’m walking you through exactly what to do before and after sowing carrot seeds so you can improve germination, avoid common mistakes, and set...

info_outline 462 - How Early Is Too Early? Planting Cool-Season Crops With Confidence show art 462 - How Early Is Too Early? Planting Cool-Season Crops With Confidence

The Beginner's Garden

Spring weather can make planting decisions confusing. Should you plant your cool season crops now, or wait a little longer? In this episode, you’ll learn how to decide the best time to plant lettuce, broccoli, carrots, peas, and other cool season crops with confidence. If you’ve ever worried about planting too early or too late, this practical guide will help you read the signals your garden is giving you. free download: Garden Cheat Sheet New to edible gardening or restarting after a break? Download my free Garden Cheat Sheet—a simple path to plan, plant, and stay on track. Key...

info_outline 461 - Seedlings Not Growing? Why Mine Stalled (and the Fix) show art 461 - Seedlings Not Growing? Why Mine Stalled (and the Fix)

The Beginner's Garden

Struggling with indoor seed starting because your seedlings stopped growing? Are they stuck with only seed leaves, turning yellow, or just frozen in time? In this episode, I share how a simple seed starting mix mistake stalled my broccoli, cabbage, and lettuce—and exactly how I fixed it. Free download: Seed Starting Troubleshooting Guide Clear, simple fixes for common indoor seed starting problems. Download it here → After 13 years of starting my own seeds, I made a mistake I didn’t even realize—until my brassicas refused to grow for nearly two weeks. What looked like a nitrogen issue...

info_outline 460 - How to Grow Better Potatoes: What Matters Most (and What Doesn’t) with Jim & Caleb Gerritsen of Wood Prairie Family Farm show art 460 - How to Grow Better Potatoes: What Matters Most (and What Doesn’t) with Jim & Caleb Gerritsen of Wood Prairie Family Farm

The Beginner's Garden

Struggling to get a big potato harvest, especially in heat or grow bags? In this episode, Jim and Caleb from Wood Prairie Family Farm break down what actually matters for growing potatoes successfully. You’ll learn practical potato growing tips for choosing seed, watering, fall planting, and avoiding common beginner mistakes. If you’ve ever felt unsure about which potatoes to plant, how to store them, or why your yields were disappointing, this conversation will clear it up. We talk certified seed vs. grocery store potatoes, how to think about short-season varieties (especially in the...

info_outline 459 - Can You Trust AI With Your Garden? How to Avoid Bad Advice show art 459 - Can You Trust AI With Your Garden? How to Avoid Bad Advice

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Struggling to know whether you can trust AI for garden planning? Wondering if ChatGPT can actually help you grow better vegetables—or if it might quietly steer you wrong? In this episode, we talk through the real benefits and real risks of using AI in your vegetable garden. Dream to Garden – Plan your garden faster with AI tools without giving up your own judgment. Learn the why behind your planting decisions and get step-by-step guidance plus custom GPT support. 👉 Learn more here: In this episode, I share what’s worked in my own garden using AI and where I’ve had to push back....

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More Episodes

Struggling with seed starting failures even when you follow the rules?
It might not be your lights, watering, or timing.
In this episode, we break down seed starting mix and why the wrong soil can sabotage seedlings before they ever get going.

I’m joined by Joe Lamp’l, and we’re digging into peat-based mixes, coconut coir problems, wetting agents, and the simple moisture mistakes most gardeners make indoors.

Free Download: Seed Starting Guide

Confident seed starting without the guesswork—what to start, when to start, and how to do it successfully.
https://journeywithjill.net/seed-starting-guide

Key Takeaways

  • Most seed starting failures trace back to the growing medium, not the gardener

  • Peat-based mixes work well, but moisture management matters

  • Coconut coir can fail if it’s not properly washed and buffered

  • Overwatering causes more problems than underwatering

  • Seed trays should feel light before watering again

Resource Links

Sponsor for This Episode

Organic Rev – I use Rev to support healthy root growth and reduce transplant shock.
Use code JILL10 for 10% off: http://journeywithjill.net/organicrev
As an affiliate, I earn from qualifying purchases.

Disclaimer

Gardening advice shared in this podcast is based on my own experience in Zone 8a (Arkansas) and from feedback I receive from gardeners in different climates. Your results may vary. Always check your local extension service for region-specific guidance.
Some links may be affiliate links. As an Amazon Associate, I earn from qualifying purchases.