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Female and Male Marijuana Plants 

Telling a female marijuana plant from a male one can be tricky for the inexperienced grower. It is, however, essential to get a knack for doing this as early as possible. Unless you're breeding or cross-breeding marijuana, there is no reason to have male plants in the grow room. In actual fact, having a male marijuana plant in the grow room does way more harm than good.

If a male is kept in a grow room, it will eventually release a pollen which pollenates the female flower. Once this has happened the female bud will have seeds, the plant is less potent and now also full of seeds. If you have any males in the grow room, rip them out as soon as you see them. If you manage to do this, your buds will be 'sinsemilla' (literally meaning without seeds). Check the description below and also have a look at some marijuana pictures. This is the best way to easily tell a male marijuana plant from a female one.

For a complete guide to marijuana sexing click here.

Female Marijuana Plant Pictures

Male Marijuana Plant Pictures

Female marijuana plants

female marijuana plantClusters of flowers known as buds or colas only occur on female or hermaphrodite plants. Hermaphrodites are plants that are part male, part female. If you want sinsemilla buds, make sure you only have pure females.

Plants in constant light can sometimes start to show some pre-flowers after only a few weeks of growth. Usually though it takes a change in light cycle to trigger the plants into full reproductive mode. 

Most varieties of marijuana require 12 hours of darkness per day to induce their flowering cycles. Sativa varieties sometimes need more. Indica varieties can sometimes take less. Ruderalis varieties can flower whatever.  

Early female marijuana flowers look like little furry hairs, usually white, but they can be other colors. Early male flowers look a bit like small bunches of mini green bananas. Look near the leaf joins on your plants to see them emerging.    

Even pure female plants have the potential to turn male or hermaphrodite. This can happen if the plant is stressed too much through bad treatment or if chemicals are applied to the plant to induce male flowering.   

Male marijuana plants   

male marijuana plantUnless you have plans to breed or to produce lots of seeds, always separate male and female plants as soon as their sex becomes apparent. Remember one or two male marijuana plants can turn a whole crop to seed and you just don't want that happening.

Once you have a good female plant that you would like to keep you can place it in constant light to stop it from flowering. This plant can then be a "mother" for you to take cuttings from whenever you wish. See the cloning marijuana section for more info.


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