Seed Starting & Propagation

Complete guides for starting seeds indoors, soil blocking, grow lights, and plant propagation techniques

When and How to Thin Seedlings Without Killing the Keepers

Thin seedlings as soon as the first true leaves appear, because every extra day of...

Yellow seedling leaves mean one of three things: the seedling has spent its stored nutrients,...

Seedlings that sprout fine then stall are usually sitting in the wrong temperature, the wrong-size...

White fuzz on seed-starting soil is usually harmless mold, not a disease. It is a...

Purple seedling leaves usually mean cold roots have locked out phosphorus. The nutrient is right...

Leggy seedlings stretch because they are starved for light. The stem elongates reaching for a...

Peat pellets are worth it for convenience and disturbance-free crops, and not worth it as...

Damping off is a soil-borne fungal disease — usually Pythium or Rhizoctonia — that pinches...

Seedlings usually die from one of six causes — damping off, leggy stretch, a cold...

Buy a seed-starting kit for your first season to skip decision paralysis; build your own...