What Are Feminized Cannabis Seeds

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Male cannabis plants produce very few cannabinoids, which means growers potentially have to scrap 50% of their crop. For this reason, we have developed feminized seeds. But just what are feminized seeds, and where do they come from? The answer is a remarkable feat of genetics and horticulture. Feminized cannabis seeds are genetically altered so that they produce female plants in at least 99,9% of the cases. Feminized marijuana seeds are produced in a way to make sure all the resulting plants are female (since only female marijuana plants make buds).

Feminized Cannabis Seeds Explained

L ike many living things, cannabis plants come in two sexes, male and female, which blend their genetics through pollination to produce seeds. These seeds then, have about a 50% chance of inheriting the sex of either parent. However, male cannabis plants produce very few cannabinoids, which faces many growers with the prospect of scrapping about 50% of their crop (unless, perhaps, they’re making their own rope). For this reason, we have developed feminized seeds. But just what are feminized seeds, and where do they come from? The answer is a remarkable feat of genetics and horticulture.

What are Feminized Seeds?

Feminized seeds are cannabis seeds genetically guaranteed to grow into a female plant. Female plants produce far more THC and CBD than their male counterparts, but once a female plant is fertilized, resources and energy are diverted from growing rich, sticky flowers, to growing a healthy crop of seeds instead. Those seeds are, of course, wonderful and necessary, but they may inherit the gender of either parent, and, as we have seen, males are nearly useless for harvesting cannabinoids.

Feminized sees will always guarantee a female plant, ensuring growers a plant that will produce cannabinoids. photo credit

When growing for cannabinoid production, pumping water, fertilizer, and time into your plants only to find half are male can be frustrating to say the least. A single male plant can pollinate an entire grow room, leaving whole crops producing seeds instead of flowers. Additionally, inspecting your plants for male attributes and removing them from the grow room takes time and attention that could otherwise go to treating female plants. For this reason, we have learned how to breed feminized seeds – seeds that we know will grow up to be female, and produce lush flowers rich with therapeutic cannabinoids.

How Feminized Seeds Are Made

Female seeds must come from two female parents, which on the surface sounds impossible. But under extreme circumstances, female cannabis plants can produce their own pollen. So the first step toward feminized seeds is inducing pollen production on a female plant.

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The primary method is to douse the flowering sites with a solution of colloidal silver, or less commonly, with gibberellic acid, for about two weeks once the flowering stage has begun.

These chemicals will suppress the hormone ethylene, which causes the plant to produce male characteristics instead, including pollen sacs. And since the plant is still genetically female, the pollen within will carry 99% female genetics (a small margin of mutation is unavoidable). This pollen can then be harvested and applied to a flowering female plant to produce seeds with purely female genetics.

The less common, but more natural, method is called “rodelization,” often favored by organic growers. Near the end of a cannabis plant’s life cycle, unfertilized females will begin to express male pollen production as a final effort to continue their genetic line. This usually occurs after the prescribed time frame for harvesting, but not always. In fact, many growers keep a sharp eye out for these “nanners” – the banana-shaped growths that protrude from flowers – because they are capable of fertilizing other plants as well, thus halting flower production.

There is a debate among growers about the viability of this method because some believe hermaphroditic plants primarily produce hermaphroditic offspring. Others insist that offspring are not more inclined to be hermaphrodites, but rather may be more easily induced to be hermaphrodites, and that hermaphroditism has less to do with genetics than external stressors (high heat, nutrient lock, physical damage, etc.). Regardless, most growers agree that rodelization is less effective and carries a higher risk of accidental pollination. For this reason, it is more often used by more experienced or meticulous growers who want to maintain the organic integrity of the plant.

Conclusion

Feminized seeds have become the industry standard, especially for home growers who do not have the space or resources to scrap half of a crop that turns out to be male. Many sites now default to offering feminized seeds, some growers have undoubtedly planted them without fully understanding the science behind them. And one thing that makes these seeds so popular is that you can, you can grow them without knowing what they are or how they exist, and they will still deliver a lush, low-maintenance cannabis plant.

Interested in growing your own cannabis? Click here to purchase seeds and start your journey.

This is also a great process to practice if you want to take your growing skills to the next level. So next time you find some nanners growing in your bud, don’t panic, but rather appreciate the opportunity that has presented itself, and try breeding your own feminized seeds.

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Do you prefer to grow with feminized seeds, or have you ever made you own? Share your experiences in the comments!

Author

Trevor Ross is a writer, medical marijuana patient and cannabis advocate. He holds an MFA in writing from the School of the Art Institute of Chicago. He has previously worked as a copywriter, a teacher, a bartender, and followed Seattle sports for SidelineBuzz. Originally from Washington state, you can find him now working in his garden or restoring his house in Scranton, PA, and he can be reached through LinkedIn.

What Are Feminized Cannabis Seeds?

Feminized cannabis seeds are genetically altered so that they produce only female plants in at least 99,9% of the cases. This forms a great advantage as only female cannabis plants produce flowers or buds. The male cannabis plants don’t produce flowers but only pollen, contain little THC and can even influence the production of THC of female plants.

The female cannabis plant produces considerably more working substances or cannabinoids such as THC, CBD, CBG and CBN and terenes than a male cannabis plant. Suzy Seeds only sells feminized cannabis seeds. Before bringing the seeds on the market, they are first thoroughly tested in a lab and further cultivated, so that we are sure that our seeds are genetically stable and consistent.

Suzy’s Tip: You can only smoke the flowers of female plants, so only buy feminised seeds.

Then you are (almost entirely) sure that you are only cultivating female plants. The gender of the plant is determined by two chromosomes, namely the X and Y chromosome. A plant with two X chromosomes becomes feminine or female and a plant with an X and Y chromosome becomes male. How are Feminized seeds produced? Feminized cannabis seeds are made by means of gibberellic acid (a hormone found in plants). Because of this, the female plant is forced to produce male flowers. The female plant becomes hermaphrodite and this makes it possible to produce seeds that have two x chromosomes and are thus female.

What Are “Feminized” Cannabis Seeds?

Feminized cannabis seeds are produced in a way to make sure that all the resulting plants are female (since only female cannabis plants make buds).

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“Regular” (or non-feminized) seeds will produce about half male, and half female plants.

Having male plants can be an asset to a breeding program, but having to watch over and throw away half the plants can be a waste of time and space for growers who just want to grow their own supply of bud!

By starting your grow with feminized cannabis seeds from a reputable breeder, you can stop worrying about plant gender altogether, and know that every single one of your plants is going to be female and make buds!

Seed Supreme is a trustworthy source of feminized cannabis seeds (it’s the company I use for seeds)

Pros of Feminized Seeds

  • All plants end up producing buds
  • Less wasted space on plants that need to be thrown away
  • Don’t need to watch plants closely to make sure you remove males
  • No chance of pollination without pollen sacs, so no seedy buds

Cons of Feminized Seeds

  • In order to build a robust breeding program and create new strains, you should start with regular seeds so you have both male and female plants
  • It’s possible to buy feminized seeds from bad breeders which turn into problematic hermies (mixed sex plants) or even just end up being half male plants like regular seeds. That’s why it’s important to order seeds from a trustworthy breeder!

Since I started growing cannabis nearly a decade ago, I’ve only grown with feminized seeds! I’ve never had a single plant that didn’t grow buds!

Non-Feminized Seeds Produce Half Male, Half Female Plants
(learn more more about cannabis plant sex)

Feminized Seeds Only Produce Female Plants

How Do Breeders Make Feminized Seeds?

The way breeders create feminized seeds is they breed two female cannabis plants together, which means that all the resulting offspring will be female. This is done by spraying developing flowers with a substance that changes flower development (often colloidal silver or gibberellic acid). This process is used to force one of the female plants to start producing pollen sacs just like a male plant.

By harvesting the pollen sacs and using the “female” pollen to pollinate buds of a different female plant, you are giving the resulting seeds only female genes (there is no “father”), so none of the seedlings end up being male.

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