If you want to be more proactive and get rid of all male plants right away, then use this technique. Photoperiod dependent strains vs. That is why they bud at the end of the summer. Examine the nodes of the plant and look for either the early growth of small sacs male or two bracts femalewhich will eventually produce the hair-like stigma. Jan Because cannabis grows as either a male or female plant, we can isolate the benefits of growing females with or without male interference. Another foolproof method to know the sex of the marijuana plant before they reach maturity is to clone them.
Only female plants will produce enough THC to be used as medicine, but they won't create much if they become fertilized.
Cannabis Pre-Flowers: Find Sex of 3-6 Week Old Plants (with pics!)