How to Predetermine the Sex of Cannabis Plants | Colorado Pot Guide


Female cannabis plants are the only ones that create flowers. Male cannabis plants create pollen which, if exposed to female cannabis plants, will outcome in seedy weed. Consequently, to cultivate seedless cannabis buds (a.k.a. “sinsemilla”), you should eliminate all males from a develop atmosphere ahead of pollen sacks type. To do so, you should ascertain a plant’s sex ahead of they transition from veg to flower. Although most cloned cannabis plants will be female, cannabis grown from seed could be either/or (unless developing feminized seeds, that is). Nowadays, we’ll clarify how to ascertain the sex of your cannabis plants ahead of they have a likelihood to either pollinate or turn into pollinated. 

Why Sex Cannabis Plants?

As pointed out, male cannabis plants create pollen which can conveniently spread all through a develop location. In reality, a single male plant can pollinate hundreds of females inside a single develop space! To make matters worse, male cannabis plants create pollen sacks ahead of females start generating buds. It normally requires about 1 to two weeks for male plants to start generating pollen sacks (characterized by a smaller “sack” as opposed to a white “hair” or pistil) whereas female plants normally take two to 4 weeks or longer to show gender.

Female (left) and male (proper) cannabis plants in early stages.

Although genetically speaking, this is a excellent way for plants to make certain reproduction, modern day develop tactics advise against this. Just after all, when a male cannabis plant drops pollen, any nearby females will create seeds in response. This not only increases weight, but it also reduces potency and adds 1 further step to the smoking procedure. 

Methods for Sexing Your Cannabis Plants

There is an a lot easier way to ascertain the sex of cannabis plants than to just watch, wait, and hope it is not as well late. Especially, you can “force sex” a plant to ascertain its gender ahead of flowering the entire issue. To force sex a cannabis plant, just location its clone in a 12/12 light cycle (12 hours of light/12 hours of total darkness). This photoperiod manipulation signals to the plant that it is time to start out flowering irrespective of whether the plant currently has roots or not.

Mainly because clones are precise genetic copies of their parents, forcing a clone to flower separate from its parent will give you a clue relating to the distinct gender of its parent.

If a clone produces pollen, you know its parent is a male. Conversely, if the clone starts to flower (appear for these pistils), you know its parent is female. Now you can eliminate all male parents leaving only the females behind to flower. No pollen, no seeds, only satisfied girls and bountiful buds.

Other items to appear out for which may well support you ascertain the sex of your cannabis plant include things like the plant’s height (males have a tendency to be taller than females although considerably of this depends on the strain form, as properly) and the size of the calyx, or the center-most element of a flower. If the calyx is significant with a protruding white hair, it is most likely female. On the other hand, if smaller and swollen with no hair, it is most likely a male. This distinction can be created ahead of the plant starts flowering in the course of a stage known as “pre-flower.” Even so, it can be tricky for the naked eye to ascertain gender at this stage a jeweler’s magnifying glass can support, although.

Male Plant

Instance of a male cannabis plant.

Skilled cannabis growers have an understanding of the significance of separating male from female cannabis plants. With a small practice, lots of can catch and dispose of males extended ahead of they have the likelihood to pollinate females. Thankfully, even if you are just beginning the homegrown cultivation procedure, you can sex your plants ahead of it is as well late, as properly. Use these ideas to predetermine the sex of your cannabis plants so that your girls will thrive unadulterated.

Do you have ideas for figuring out the sex of your cannabis plants? Share them in the comments beneath!


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