Germination

Marijuana Horticulture

by Jorge Cervantes

During germination, moisture, heat, and air activate hormones (cytokinins, gibberelins, and auxins) within the durable outer coating of the seed. Cytokinins signal more cells to form and gibberellins to increase cell size. The embryo expands, nourished by a supply of stored food within the seed. Soon, the seed’s coating splits, a rootlet grows downward, and a sprout with seed leaves pushes upwards in search of light.