Avoid growing hermaphrodite cannabis plants with these effective & highly-rated tips. Updated info on weed hermies here. Marijuana plants typically come in male and female sexes that are easily distinguishable from one another. Depending on what a cannabis producer is after, different genders perform different roles and provide different results. Male plants generate pollen, which is used to fertilize female plants and promote reproduction. When female plants are pollinated, they generate more seeds in order to expand their species. These female plants, on the other hand, employ their resources to form buds, create more THC, and become more psychotropic than male plants and fertilized female plants when they are never pollinated.