Why Did My Tomato Seedlings Fail? Troubleshooting Weak Starts

In this episode, Callie answers a thoughtful question from a student named Paula, who’s puzzled by a common indoor seed-starting dilemma: why did most of her tomato and pepper seedlings thrive—except for two specific heirloom tomato varieties?

Callie dives deep into:

• The difference between heirloom and hybrid seeds Why some varieties (or even specific strains) may underperform


• How small differences in light, water, or tray placement can affect seedling growth Why it's not your fault when a few seedlings don’t make it


• Tips for troubleshooting seedling issues and improving your results next time

Whether you're a new seed starter or a seasoned gardener, this episode is full of helpful insight into the art and science of growing strong, healthy seedlings indoors.

🌱 Resources Mentioned:

Baker Creek Heirloom Seeds
Johnny’s Selected Seeds
Learn more at The Dallas Garden School

💬 Have a question for Callie?
Leave a voice message at speakpipe.com/thedallasgardenschool and your question could be featured on a future episode!

📩 Stay in the Loop
Join the newsletter at thedallasgarden.com to get gardening tips, free resources, and updates on upcoming classes.