Some hermaphrodites seem to be genetically determined (protogenous). That is, they naturally form flowers of both sexes given normal growing conditions. Possibly genes carried on the autosomes (the chromosomes other than the sex chromosomes) modify the normal sexual expression.

Abnormally formed flowers are not often seen on healthy plants, although if one looks hard enough, a few may be found in most crops. When many of the flowers are abnormal, an improper photoperiod (coupled with poor health) is the most likely cause. Abnormal flowers sometimes form on marijuana grown out of season, such as with winter or spring crops grown under natural light.

Intersexes and Reversals Much more common than abnormally formed flowers is for the plant's sex to be confused. Intersexes due to environment causes differ from natural hermaphrodite in having random distributions and proportions of male and female flowers. In more extreme cases, a plant may completely reverse sex.


Many environmental factors can cause intersexes and sexual reversals. These include photoperiod, low light intensity, applications of ultraviolet light, low temperatures, mutilation or severe pruning, nutrient imbalances or deficiencies, senescence (old age), and applications of various chemicals
LUDACRIS Reviewed by LUDACRIS on . so i got some male pollen sacks! i have a ww and humbolt purple the currently on there third week of flower and i seen that my humbolt purps has male pollen sacks along with female flowers i dont think i have light leeks i dont know why i keep getting hermies im running fox farms ocean forest i was running earth juice for veg nutes now im running fox farms open sesame and beasty blooms soluble nutes and im running about 18 cfls watt ranging from (1) 150w (6) 40w (6) 32w (5) 25w and there kelvin range fro 2700k to 5600k the Rating: 5