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

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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. Thus, to cultivate seedless cannabis buds (a.k.a. “sinsemilla”), you will have to get rid of all males from a develop atmosphere just before pollen sacks kind. To do so, you will have to ascertain a plant’s sex just before they transition from veg to flower. Even though 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 just before they have a likelihood to either pollinate or turn into pollinated. 

Why Sex Cannabis Plants?

As talked about, male cannabis plants create pollen which can effortlessly 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 just before females start creating buds. It normally requires about one particular to two weeks for male plants to start creating pollen sacks (characterized by a modest “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 (ideal) cannabis plants in early stages.

Even though genetically speaking, this is a fantastic way for plants to make sure reproduction, modern day develop tactics advise against this. Right 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 one particular additional step to the smoking method. 

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. Particularly, you can “force sex” a plant to ascertain its gender just before flowering the complete 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 get started flowering whether or not 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 precise 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 get rid of all male parents leaving only the females behind to flower. No pollen, no seeds, only delighted girls and bountiful buds.

Other issues to appear out for which may possibly enable you ascertain the sex of your cannabis plant consist of the plant’s height (males have a tendency to be taller than females although a lot of this depends on the strain form, as nicely) and the size of the calyx, or the center-most component of a flower. If the calyx is huge with a protruding white hair, it is probably female. On the other hand, if modest and swollen with no hair, it is probably a male. This distinction can be produced just before the plant starts flowering in the course of a stage named “pre-flower.” Nevertheless, it can be tricky for the naked eye to ascertain gender at this stage a jeweler’s magnifying glass can enable, although.

Male Plant

Instance of a male cannabis plant.

Knowledgeable cannabis growers recognize the significance of separating male from female cannabis plants. With a small practice, several can catch and dispose of males lengthy just before they have the likelihood to pollinate females. Thankfully, even if you are just beginning the homegrown cultivation method, you can sex your plants just before it is as well late, as nicely. 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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