Originally Posted by built2spill
Cannabis is a wind driven pollinator. The males release the pollen to the wind and the female pistils grab a hold of it and start making seed. A male by itself can not make seed it needs a female. A female, on the other hand can make seed by itself. Stress, chemicals and genetics can cause a female to hermaphrodite. This plant will pollinate itself and any other females in the area. Cannabis pollen can travel great distances on the wind outside. I have had plants seed from mystery pollen in the past.