by Jorge Cervantes
Male Flowering
When given a 12/12 day/night photoperiod, male cannabis reaches maturity and flowers one to two weeks before females. However, plants do not necessarily need a 12/12 day/night photoperiod to grow flowers and shed pollen. Some male plants flower under long days and short nights as well, but these generally produce fewer flowers.
Once male calyxes show, pollen develops quickly and can disperse within a very short time. There is always a flower sack that opens early and sheds pollen, often within 24 hours or less! To avoid pollination problems, remove males as soon as they are distinguished. If growing male plants, always isolate them from females, to prevent accidental pollination.