Auxins

Marijuana Horticulture

by Jorge Cervantes

Auxins represent a group of plant hormones that regulate growth and phototropism. They are associated with elongation of plant cells causing the branches to grow vertically while inhibiting lateral buds. “Pinching off” branch tips will reduce the auxin level and encourage bushy lateral growth as well as inducing new root formation.

Synthetic auxins are more stable and last longer than the natural solutions. They can be used as an herbicide against broadleaf weeds like dandelions, but are most often used to encourage root growth and promote flowering.