Using Coir for Nepenthes Seed Germination: Rinse Thoroughly, Skip Gravel

A grower asked if washed gravel drainage layer is needed under coir for Nepenthes seeds, noting Sam Estes uses coir exclusively.

Jeff Dallas: Coir drains better than peat—no gravel needed. Critical: expand block, then soak/rinse/drain 3+ times in pure water to remove all salts. Sow seeds on surface, cover for humidity, treat with fungicide.