How To Feminize Cannabis Seeds


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Find out what feminized cannabis seeds are and what they are used for from the pros at Atlas Seed. Feminized cannabis seeds Feminized cannabis seeds first appeared in the 1990’s, they were invented by Dutch Passion and feminized cannabis seeds now account for 95%+ of all cannabis seeds sold. How Feminized Cannabis Seeds are Made Feminized cannabis seeds are a type of cannabis seed that has been bred to produce female plants. This means that the plants will not produce any male

What Are Feminized Cannabis Seeds & What Are They Used For?

Feminized hemp and cannabis seeds are produced to grow primarily female plants, while regular hemp and cannabis seeds have a 50% chance of being female. Since cannabis is a dioecious plant, it evenly produces male and female plants, or plants with male and female flowering parts. The feminization process allows breeders and seed producers to create seed that is almost entirely female. Though our exact recipe, frequency, and timing are proprietary, generally feminization is done with a colloidal silver spray.

Producing primarily phenotypically presenting females is an efficient approach to streamlining the cultivation of cannabis and hemp flower. Though there is no way to completely remove the risk of male plants pollinating and seeding female flowers (as least with normal, diploid cannabis), farmers and cultivators can save an enormous amount of production space and time by removing males from the equation at the beginning of the growth cycle of the cannabis plant.

Not all feminized seeds are produced equally, since the execution of the process is easy to learn but tricky to master. We’ve heard many anecdotal stories of fly by night seed producer lots producing 20-30% males, so apparently it’s a thing you can encounter if you’re not careful. Atlas Seed feminization rates tend to range from 1:1000 to 1:4000, or 99.99% in either case. These rates are comparable with the best produced feminized seed in the world. To date we are not aware of anyone offering “100% feminized seed.” Some breeders and producers allege that their feminized seed produces no males but will show a small amount of herms, which from the perspective of the grower is merely semantic, since we are in either case talking about pollen producing male parts that will seed your crop.. With Atlas Seed’s feminized cultivars, depending on the amount of plants you have per acre, you’ll basically end up with somewhere between 10-20 males per acre. For more information on conducting a proper hunt for male and hermaphroditic plants, please see our male hunt guide here.

Feminized cannabis seeds

Feminized cannabis seeds first appeared in the 1990’s, they were invented by Dutch Passion and feminized cannabis seeds now account for 95%+ of all cannabis seeds sold.

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Regular cannabis seeds produce male and female plants in roughly equal numbers. But today regular cannabis seeds account for under 3% of Dutch Passion seed sales, even though our 15 varieties is one of the most complete collections of regular cannabis seeds still available. Most home growers simply do not like to use their time, space and electricity growing male cannabis plants. Most home growers prefer to grow a small number of high quality female plants, and the best way to do that is from cuttings (clones) or from feminized cannabis seeds , which are usually bought online or from the local seed shop.

How were feminized cannabis seeds created?

Back in the 1990’s Dutch Passion’s founder, Henk van Dalen , was growing some cannabis plants from regular seeds, they were the only type of cannabis seed available at the time. Cannabis growers had dreamed of feminized cannabis seeds, but it was generally accepted that it was not possible for cannabis. One day Henk noticed something unusual when studying some female plants which had been left to flower for several weeks longer than usual. It was one of those experiments just to see what happened if a female was left to bloom for much longer than anyone would normally think about. It was an experiment that would change cannabis growing forever, because he noticed the female plants eventually produced male flowers. Henk collected the pollen and used it to pollinate some other female plants and a few weeks later he collected the seeds which had formed. Again, it was one of those experiments done ‘just to see’ what happened.

The seeds were planted, and to everyones astonishment every seed produced a female plant. There was huge eagerness to try to understand it, and perhaps a chance to repeat the experiment and see if this discovery could be put to a practical use. So more female plants were grown from regular seed, and sure enough several weeks after the normal harvest date, the females began to produce male flowers. The pollen was carefully collected, Henk called this ‘female pollen’ because the seeds created from it only gave rise to female plants. This larger, second experiment confirmed the initial findings. Feminized cannabis seeds had been created at Dutch Passion, though at first not everyone believed it.

The process of collecting ‘female pollen’ from over-ripe female cannabis plants was not suitable for mass-production of seeds. Today each seed company has their own preferred chemical way of creating ‘female’ pollen to use in the creation of feminized seeds.

Today, feminized cannabis seeds are vital to growers of all kinds. Feminized autoflowering cannabis seeds are becoming almost as popular as photoperiod seeds, they are an easy and convenient way to grow cannabis both indoors and outdoors. Many first time cannabis growers choose feminized auto seeds because they are so easy and flexible to grow.

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Feminized CBD-rich cannabis seeds are popular with medical growers. Many outdoor growers also rely on feminized seeds, without them they would risk male plants pollinating the entire crop.

Regular seeds are popular with some old-school growers and small scale seed banks. Dutch Passion’s regular seed sales are so low that we regard it as a service rather than a viable business. For most growers, feminized seeds are the preferred way to grow your own cannabis.

How Feminized Cannabis Seeds are Made

Feminized cannabis seeds are a type of cannabis seed that has been bred to produce female plants. This means that the plants will not produce any male flowers or pollen. They are a great option for those who want to grow their own cannabis but don’t want to deal with the hassle of crossing over from regular marijuana plants.

Difference between male and female marijuana plants

The main difference between male and female cannabis plants is that male cannabis plants do not yield buds, whereas female cannabis plants do. This means female plants produce usable cannabis (buds), and male plants do not. There are many other obvious as well as subtler differences between male and female cannabis plants that can affect a cultivator’s crop.

The main advantage of feminized seeds is that they will not produce any male flowers. This means that the female flowers will develop and produce the best quality buds. With feminized seeds, you will not have any unwanted male plants in your garden, which helps cut down on wastage and speeds up the flowering process.

If you have a large number of female plants growing, then it is relatively easy to identify which ones produce the best quality buds, so you can harvest all the buds off these plants to use in other products such as hash or oils.

How to feminize cannabis seeds

There are two main ways to make feminized pollen:

Chemical Inducement

A cannabis seed typically has a 50/50 probability of developing either a male or a female plant. The plant’s DNA has a biological program that is designed to increase its chances of procreation and, of course, overall survival. The X and Y chromosomes, like in humans, determine gender.

Ninety-nine percent of the time, a plant will produce a male if it has one of each chromosome. A cannabis plant has a 99.9% chance of being female if it has two X chromosomes. During the flowering stage, plants are treated with colloidal silver to produce feminized seeds. Using this method, female plants are converted into hermaphrodites (a plant that is both male and female). They are compelled to generate female pollen-filled seed sacs instead of buds as a result.


In rare instances, a female cannabis plant may begin producing male pollen sacs or bananas spontaneously, which the plant can use to self-pollinate. When a plant is stressed or not harvested on time, buds begin to wither and die. In essence, the plant is exerting every effort to produce seeds and protect the future generation. These seeds are mainly female because of this “natural” process. The issue with this approach is that you’re choosing plants that develop both male and female sex organs independently, without chemical inducement. This implies that the seeds that arise are far more likely to become hermie under normal circumstances. If you don’t want seedy buds every time you harvest, that’s an issue. It is strongly advised that you avoid feminizing seeds in this manner. Additionally, it’s a good idea to discard any seeds that are the product of natural herming (such as seeds you discover in your buds while not growing any male plants).

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Growing marijuana from feminized seeds

Growing marijuana from feminized seeds follows the same procedures as growing it from ordinary seeds. Keep these points in mind if you want to attempt growing cannabis and are aware of your area’s rules and legislation.

Before you plant the first seed, you must answer the following questions:

  • Do you like cultivating marijuana inside, in a greenhouse, or the open air?
  • What strain(s) are you planning to grow?
  • Will it be photoperiod or autoflowering?
  • Are you planning to cultivate a cannabis plant from seed or a clone?
  • Which growing media are you going to employ? An aeroponic system, regular soil, or a hydroponic solution?

Answering these questions will raise further queries.

  • Will you utilize natural or artificial light if you’re growing indoors?
  • If you switch to hydroponics, will you also utilize a growth medium like Rockwool or Hydroton?

While it is possible to purchase a clone, plant it in soil, and hope for the best, it is recommended to approach marijuana cultivation cautiously and conduct an extensive study first. If that’s not your thing, you may treat marijuana like a houseplant and try a straightforward indoor grow with natural light. If you begin with one or two plants on a sunny windowsill and end up with a good harvest, you may upgrade to a more complex arrangement or stick with the original one.


It all depends on your particular preferences and how much work you want to put into it, much like most things in the cannabis industry. Regardless of your chosen method, you will need to buy cannabis seeds. You can check out the Herbies headshop for the best selection of feminized marijuana seeds.

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