Marijuana Grow Basics book

Marijuana Grow Basics

by Jorge Cervantes

Seedling Growth

Seed germination is induced with moisture, heat, and air which activate hormones within the seed. Within 24-72 hours the seed’s coating splits and a white rootlet emerges and continues t grow.

After three to seven days of germination, the rootlet grows downward and a sprout with seed leaves pushes upwards in search of light. During this stage the seed establishes a root system and grows a stem with a few leaves. Seedlings need 16-18 hours of light to grow strong and healthy.

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