Botany Cannabis cultivation
cannabis belongs genus cannabis in family cannabaceae , may include 3 species, c. sativa, c. indica, , c. ruderalis, (apg ii system) or 1 variable species. typically dioecious (each individual either male or female) annual plant (life period: april–september).
c. sativa , c. indica grow tall (some varieties reach 4 metres, or 13 feet) , females start production of flowers rich in tetrahydrocannabinol (thc) (up 29% weight) season changes summer autumn. c. ruderalis short, produces trace amounts of thc, rich in cannabidiol (cbd), may 40% of cannabinoids in plant , antagonist thc, , flowers independently of photoperiod , according age. however, commercial cross-bred hybrids containing both ruderalis, indica and/or sativa genes exist (usually called autoflowering).
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