Plant growth hormones control every aspect of how plants grow: stretching, branching, dormancy, flowering and ripening. Growers and gardeners can manipulate these hormones as "cheat codes" to make the plants do what they want. We can do it indirectly, by managing the growing conditions, or directly through the application of PGR (plant growth regulators) that amplify or inhibit the activity of hormones. In this video I'll go through a (simplified) summary of the 5 commonly manipulated plant hormones: gibberellic acid, auxins, cytokinins, abscisic acid and ethylene.
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