Damping-Off: Why Seedlings Collapse and How to Prevent It
Damping-off is a water-mold disease that kills seeds before they emerge and topples seedlings at the soil line. Learn the signs, the causes, and how to prevent it.
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Seedling problems and fixes
What is wrong with your seedlings and how to fix it: damping-off, leggy seedlings, seeds that will not sprout, and fungus gnats and other pests.
Fungus Gnats and Other Pests on Indoor Seedlings
Tiny black flies over seedling trays mean the mix is too wet. Learn to dry it out, trap the adults, and check seedlings and transplants for other pests.
Leggy Seedlings: Why They Stretch and How to Fix It
Leggy seedlings are tall, thin and weak. Learn the causes—low light, warmth, crowding—and the fixes that make stocky transplants before planting out.
Seedling Problems: A Diagnosis Guide
A symptom-to-cause guide to seedling problems: no sprouts, damping-off, leggy growth, yellow leaves, fungus gnats, and stalled transplants, with fixes.
Seeds Not Germinating? Causes and a Germination Test
Seeds not germinating? Learn the common causes—old seed, cold soil, too deep, too wet—and how to run a paper-towel germination test to check old seed.