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female cannabis seeds vs male

Female cannabis seeds vs male
While being able to determine the sex of a cannabis seed by looking at it is a myth, being able to sex your cannabis early isn’t.

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Can You Tell The Sex Of Cannabis Seeds?

For those who don’t use feminized seeds, being able to tell the sex of a cannabis seed by looking at it would be a pretty handy skill. But is it possible?

If you are a veteran of the cannabis community, or spent a lot of your time reading up on cannabis, you may have heard that it is possible to tell the sex of cannabis seed simply from its appearance. There is even a chart floating about out there that describes the physical differences between male and female seeds.

Well, let us tell you now, it is all a load of bollocks. There is no way to tell the difference between male and female cannabis seeds by looking at them. In fact, it is widely accepted that the sex of a cannabis plant is not determined until a few weeks before flowering.

Even feminized seed, which have been bred to have 99.9% chance of growing female, can turn into male or hermaphrodite plants if put under a ton of stress while growing. This is very rarely a worry for feminized growers, as they don’t tend to stress out their plants to this extreme extent – but it is possible.

Think about it. Why would breeders across the globe go to all the effort required to produce feminized cannabis seeds if they could simply look at regular cannabis seeds and categorize them? It isn’t some conspiracy or well-kept trade secret.


While being able to determine the sex of a cannabis seed by looking at it is a myth, being able to sex your cannabis early isn’t.

Normally, you would wait until your cannabis plants are done with vegetative growth, and switch them over to flowering. You then watch like a hawk for any signs of sex, and move the males as soon as possible. This is risky, though, because if you leave it too long, you risk the chance of pollination – turning your bud into seeds. Unless you are getting into breeding yourself, this is something you probably want to avoid.

If you don’t want to take the risk, then sexing your cannabis early is pretty easy, and stress-free. It basically involves placing a black bag over a small section of the plant during the vegetative stage to force pre-flowering, before allowing it to revert back. This gives you a clear idea of what sex your plants are, without undue worry, wasted time, or effort.

If you are growing your own cannabis, you are doing it to produce some prime bud. For this reason, it is extremely important to identify.

It is a sad truth that you cannot determine the sex of a seed by looking at it. If you think you can, you have been lucky. Nothing more. However, hopefully, our explanation of the measures you can take to determine the sex of your cannabis plants will help you keep your grow room male free for years to come!

Written by: Zamnesia
Zamnesia has spent years honing its products, ranges, and knowledge of all things psychedelic. Driven by the spirit of Zammy, Zamnesia strives to bring you accurate, factual, and informative content.

Female cannabis seeds vs male
Because Hermaphrodites produce pollen, they have to be removed before it influence the production of buds. It’s therefore important to recognize the development of Hermaphrodites.

How to > Growing

When growing weed plants from regular cannabis seeds, chances are that 60% will result in a female plant, 39.9% in a male plant and about 0.10% chance of an ambiguous plant (Hermaphrodite). However, only female non-pollinated plants produce smokable cannabis. This is called Sensimilla. Therefore, male plants are not very useful in most cases. Moreover, male cannabis plants that have pollinated the female plants can significantly lower the harvest or completely ruin it. When pollinated, a female cannabis plant will mainly use its energy to produce seed, and therefore produce fewer buds. This will result in a lower quality. Besides, the potency of the weed will drastically decrease. It’s therefore important to remove the male plants in time. But how to identify male and female weed plants and when? In this blog we explain how to determine the gender of a weed plant.

When does the genus of a cannabis plant appears?

The gender of the cannabis plant becomes visible from about week 4 of the growth phase. However, this depends on the strain species. Some species show their genus only from day 10 of the flowering phase. It is therefore important to be extra alert during this period. In order to remove any male plants in time.

How to see the genus of a cannabis plant?

Determining the gender with the eye is a bit difficult sometimes, but using a magnifying glass will reveal it.

How to identify a male weed plant?

The male cannabis plants can be recognized by their round spheres in the leaf axils. These are larger than those of the female plants. The armpits can be found at the top of the branch where the branch grows from the trunk. Moreover, the globules of a male plant doesn’t have any hairs (which the female plant doe have). Finally, male plants often look thin and unhealthy. In most cases a male cannabis plant has fewer leaves and grows less high.

How to identify a female weed plant

Female cannabis plants also have a ball at the armpit (just like the male plants). However, with female plants a hair is growing out of the bulb. In addition, the globules are smaller compared to male marijuana plants. A female cannabis plant also looks healthier. The plant has more branching and is often larger than the male plant.

How to recognize a Hermaphrodite cannabis plant?

In rare cases, a cannabis plant develops two sexual organs (male and female). Such a plant is called a Hermaphrodite. It’s a plant that can fertilize itself. However, an Hermaphrodite only develops when the natural conditions are bad. In addition, an Hermaphrodite can arise from genetic predisposition. Some species are more susceptible to the development of an ambiguous plant than others.

Because Hermaphrodites produce pollen, they have to be removed before it influence the production of buds. It’s therefore important to recognize the development of Hermaphrodites.

Hermaphrodites can develop in two forms, namely as a “banana” (a ball turned inside out) or two balls of different sizes, one with hair and one without a hair.

Recognizing the sex during the pre-flowering phase or the flowering phase

In some cases it’s possible to see gender symptoms from the 4th week of the growth phase, which is also called the pre-flowering or vegetative phase. The females will produce hairs at the end of the branches. These are the places where the buds eventually will develop. However, recognizing the gender is not always possible in the pre-flowering stage. The pre-flowering method is therefore not always suitable. The sex is mainly visible from about the 10th day of the flowering phase.

Until the first 10 days of flowering there is no need to worry about pollination of female plants. The male plants can only pollinate the female plants when the pollen bags open.