How To Produce Feminized Weed Seeds

Feminization of your weed plants is one of the ways to ensure a successful harvest. You can use this methods to feminize your plants, including colloidal silver, silver thiosulfate and rodelization. If you completed your  harvest, that means you have been able to keep your cannabis plants healthy — and that is probably all you wanted to do. Feminizng cannabis plants is one way to achieve this.

Making feminized weed seeds

Successful harvest is great, it means you are ready to learn something new. You have managed to have a successful season, and that counts a lot.  Chances are you had quite some male cannabis plants you had to throw away. 

Making feminized cannabis seeds can actually make your harvest bigger especially if you are growing in a limited space.

You probably noticed that many of your plants, when maturing, became tall and slim while others stay short. This has to do with the gender of your cannabis plants.

Sexing cannabis plants

Before you can even begin making feminized cannabis seeds, you need to identify the gender of your plants.

The male plants will show male flowers first. Male plants will start developing male flowers  that are greenish white and egg-shaped. These flowers will soon be emitting pollen, making it clear that the cannabis plant is male.

The females will start developing its flowers a couple weeks later. You can identify female plants by their buds, which are white and resemble cactuses.

Cannabis pollination

By leaving your plants as they are, the males will pollinate the females, which means the females will then produce seeds rather than buds. Unfertilized female cannabis plant, will focus their energy on producing many THC-rich buds.

You have to decide which female plants you want to pollinate and which you want to leave un pollinated to grow buds. If you are only going after quality buds, then you should remove the male cannabis plants as soon as you are able to identify them.

Producing cannabis seeds

The best way to polinate your female cannabis plants is to take one male out  and change its lighting cycle. The females plants should have 24 hours of light per day, but change your male plants lighting cycle to 12 hours of light and 12 hours of darkness. This is what makes the male plants go into flowering phase and then begin producing pollen. Once they start producing pollen,  simply collect it from the flowers with a piece of paper and seal it.  You can store it in the freezer to maintain freshness.

  • Popular and Award Winning Genetics

    Zenpype cannabis seeds bank

  • Grown from certified seeds.

    Zenpype CBD products

  • 12 000 Members Strong

    Zenpype Cannabis Community


The females should be kept vegetating for as long as possible. When you decide your females are ready to flower, use the stored pollen. Choose which female you would like to reproduce  — and then “brush” the pollen (mixed with water) onto just one of the female’s plants cola.

After about half a week, change your female plant light cycle to 12 hours of light and 12 hours of darkness. When the seeds are mature enough to remove, they will be a shade of brown. Just remove them with your fingers and freeze them in a (clearly labeled) container. They will remain fresh for as long as you keep them in the freezer.

Feminizing your cannabis seeds

If you pollinate your plants the normal way described above, you will end up with the unfortunate average ratio of males to females, which is 70% male and 30% female. If you feminize your marijuana seeds, however, you will make the ratio as close to 100% female as possible — and that means big results for your next harvest.

There are several methods for doing this, one of it is simply buying feminized cannabis seeds online. If you prefer to do it yourself, you can pick from the following methods: silver thiosulfate, colloidal silver, and rodelization.

Silver thiosulfate

The silver thiosulfate method is somewhat new, although it is already one of the most common methods to use. This is due to its high rate of success. It uses what’s called a Silver Thiosulfate Solution, or STS. Silver thiosulfate is actually a mixture of sodium thiosulfate and silver nitrate, and it causes a stress response in cannabis plants. Because marijuana plants often naturally respond to stress by changing their gender, this can be used to our advantage.

You should only subject one or a few of your female plants from the same strain to this treatment. They should be nearly mature when you apply the STS. All you have to do is separate the chosen plant from the rest, spray it with the STS, and then put it back where it was to grow. It will begin appearing stressed, turn brown, and will apppear unhealthy. After less than a week, however, it will start to perk up — in just one month it will become male.

The next step is to pollinate the other females with this male plant — just shake the male polen over the females, and the seeds that they produce will be feminized. This is due to the fact that the male plant actually has female pollen.

Colloidal silver

Pure silver and distilled water are the main ingredients you will need to successfully carry out this method. Simply put the pure silver (also called colloidal silver) into the distilled water, and then spray it onto the female plants. They will start forming male pollen sacs, which have the effect of a regular male’s pollen sacs but are actually genetically female.

Your best bet is to buy the colloidal silver online its not that expensive .

Be sure to never consume or smoke any part of a plant that came in contact with the colloidal silver solution. The pollen is safe, but the plant matter that directly touched the colloidal silver solution is not. When in doubt, throw it out.


This is another method that takes advantage of the cannabis plant’s natural response to stress. If a female plant has reached the end of her life without being fertilized, she will naturally develop male pollen sacs. This evolved as a means of the species’ self-preservation. The seeds from this response will naturally be female because only female genetics was actually used to create them.

Rodelization is the natural method of achieving something like the above two methods describe. It simply requires you to keep the female plant in its flowering phase for much longer than you normally would, causing the plant to begin self-pollinating. Once you see the pollen sacs, you can remove the pollen and use it to “paint” female colas, as was described already.

This is easily the least reliable of the three methods, and you might not end up with feminized seeds anyway. It will also keep the plant being treated from having an ideal harvest, so it is indeed a risk. It’s the preferred choice for organic growers, however, since it is all natural.

  • Did we forget something?

Check out certified organic CBD products or feminized cannabis seeds. We are offering a wide range of popular, award winning, feminized Sativa, Indica and Autoflowering seeds.

Sources any

  • 4.9K
4 3 votes
Article Rating
Notify of
Inline Feedbacks
View all comments


Zenpype Cannabis News Feed
Would love to hear your thoughts...x