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. Cannabis flower is grown from female plants. Seedsman looks at how to create feminized cannabis seeds to ensure your plants almost always turn out to be female 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.

How To Feminize Cannabis Seeds

If you’re a home grower who grows your cannabis from seed, you need those to be female seeds. In this article, we’ll explain why and also how to feminize cannabis seeds.

Table of contents

What Are Feminized Cannabis Seeds?

Cannabis plants are dioecious beasts, meaning they can be male or female. Although they look the same in the early part of their life cycle, there are marked differences between the two. Male cannabis plants produce male seeds and pollen sacs and have much lower potency than females. For that reason, most people involved in cannabis cultivation want to grow female cannabis plants. Females produce the much sought-after buds that cannabis is harvested for. They’re high in cannabinoids and terpenes and have all the trichomes and other components you need for medical or recreational cannabis use.

Why Make Feminized Cannabis Seeds?

As opposed to regular cannabis seeds, which produce female plants approximately half of the time, feminized seeds only produce females. That means every plant grown from feminized cannabis seeds will be a female, bud-bearing beauty.

Growing cannabis plants from feminized marijuana seeds takes the guesswork out of the gender game and guarantees your plants will be female.

Nowadays, almost all strains of cannabis are available in feminized seed form. This is because seed banks understand that most people buying seeds are more interested in producing cannabis flower. As such, the option to do so is available – although, if you’re a breeder and want to create a breeding programme, these seed banks also sell regular seeds of many popular strains.

How Do You Make Feminized Cannabis Seeds?

The general idea of the feminization process involves forcing female plants to produce pollen. That pollen is used to pollinate other female cannabis plants, resulting in feminized seeds.

There are two main ways to achieve this:

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1. Chemically-induced pollen feminization

Of these two options, it’s far better to go chemically-induced. This method is used by professionals and has a significantly higher success rate. It also has a much lower frustration rate than the latter method. Rodelization creates feminized seeds through stress and, as such, can be a risky endeavour that increases the likelihood of hermaphrodite plants – and you don’t want hermie plants.

Marijuana plant and Cannabis seeds in a plate

So how do you feminize cannabis seeds with chemicals? There are several techniques and chemicals that you can use. The main ones are Colloidal silver, silver nitrate, silver thiosulphate, benzothiadiazole, and gibberellic acid. Of these options, colloidal silver is the easiest to get a hold of, but you can also make it yourself without too much difficulty.

Colloidal Silver

Colloidal silver is a solution comprising tiny – microscopic particles of silver suspended in distilled water. It’s sometimes used as a dietary supplement, meaning it’s reasonably easy to get a hold of. You can buy it on Amazon or from health shops. Disclaimer: Never ingest colloidal silver as a dietary supplement without speaking to your doctor beforehand.

Colloidal silver has other uses in horticulture, including as a means of fungal control. In creating feminized cannabis seeds, colloidal silver works by inhibiting the production of ethylene, a naturally occurring hydrocarbon gas. Ethylene is a hormone needed to produce female flowers, so we use colloidal silver to prevent ethylene from effectively making plants female. The result is that the male hormones dominate, producing male flowers. Afterwards, you collect the pollen from the plant and use it for pollinating other plants, producing feminized seeds. Colloidal silver guarantees you consistently get feminized seeds.

The Colloidal Silver Method: Step by Step

  • Begin by acquiring the right strength of colloidal silver, preferably 30ppm (ppm meaning parts per million). It’s available in other concentrations, and 30ppm seems to be the best for the job. Lower than 15ppm will result in male sacs with next to no viable pollen, so go with a higher concentration.
  • Select a plant that has the traits you wish to preserve. Put it into a small pot away from your grow room and give it a day or two to adapt, then put it on a 12/12 light cycle as soon as possible. If using a clone, you’re good, but if you’re growing a plant from seed, wait until the plant has sexed before treating it with colloidal silver. You need to make sure it’s female!
  • Once it begins the flowering stage, spray the plant, or plants, three times a day with colloidal silver, giving them a good soaking. Repeat this process over two weeks, and then leave them to grow as usual.
  • When sexing begins, your plant will develop sex organs – look for male pollen sacs on the bud sites rather than the calyxes and pistils seen in female plants. Look for little green balls appearing first at the top and then lower down the plant. Viable pollen appears within three to four weeks once the plant has been sexed. Collect the pollen and use it to pollinate other female plants. These plants will then yield feminized seeds.
  • Keep your treated plant isolated well away from females. If a pollen sac should burst, it will release millions of spores, and you don’t want them near your girls.

As soon as you’ve collected the pollen, discard the plants. Do not smoke them, and do not be tempted to try and rinse the colloidal silver off. Silver is a toxic metal, so never smoke the plant. Colloidal silver is absorbed into the plant’s foliage, and that plant is no longer fit for consumption. Toss it in the trash immediately.

Five Best Feminized Cannabis Seeds For Sale

Blue Dream

We’ve never made any secret that Blue Dream is one of the finest elite strains we offer. By crossing Blueberry Ice with a Haze, you get a high-yielding 70% photoperiod sativa strain of superb quality.

It’s a fairly easy strain to grow and performs well indoors or out. Blue Dream can yield as much as gm/m2 indoors, whereas outdoor cultivators can expect up to 850 gm/plant. Blue Dream is a high-THC strain that produces up to 20% THC on its sparkling, resin-covered crystals.

As a sativa, it’s a tall plant that tops out around 350cm in height when grown outdoors, and with a flowering time of around 10 weeks, you won’t have too long to wait for this wonder weed.

Blue Dream is high in alpha-pinene, a monoterpene with therapeutic benefits. Benefits include relief from anxiety, depression, arthritis, inflammation, nausea and pain. The aroma and taste of Blue Dream are lemon-citrus, with berry and Haze notes. The effect of this strain is a powerful and uplifting cerebral one, mentally stimulating but bodily relaxing at the same time.

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Purple Ghost Candy

Purple Ghost Candy from Seedsman is an absolute must if you’re looking for the highest of the high THC strains. This is another high-quality strain that delivers a knockout punch like few others.

Purple Ghost Candy is an easy-to-grow cannabis strain, so much so that it’s recommended even for beginners. Make no mistake, though – this is genuinely connoisseur cannabis. It’s another mostly-sativa strain, but it packs an incredible 27% THC!

The aromas and taste of Purple Ghost Candy are every bit as sumptuous as its appearance. Fuel-like in its scent, but the flavours are decidedly fruitier – let those lemon and peachy tones dance on your palate, with earthy mint notes in support. This is an absolute taste sensation.

Purple Ghost Candy’s very high THC content makes for a potent effect. Expect physical relaxation balanced well with cerebral stimulation. The 12-week maximum flowering time of Purple Ghost Candy is longer, but it is most certainly worth waiting for this absolute champ!

Peyote WiFi CBD 2:1

In sharp contrast to the high-THC madness of Purple Ghost Candy, Seedsman proudly presents a unique cannabis strain – Peyote WiFi CBD 2:1. This is an intriguing cross-breed of Peyote Purple, WiFi OG, and Seedsman CBD#2. The result is a high CBD cannabis strain with the power to soothe and relieve for medical consumers.

Peyote WiFi CBD 2:1 is an indica/sativa hybrid with a THC percentage between 5-10%. CBD is between 12-14%, meaning the therapeutic benefits of this strain are free to enjoy without THC’s debilitating psychoactive effects.

Peyote WiFi CBD 2:1 is a hardy and resilient plant that grows well in most climates and has a flowering time of around 65 days. Its benefits include relief from pain, depression, anxiety, and loss of appetite. This unique medical cannabis grows well in all environments.

Strawberry Cheesecake Auto

One of our most in-demand strains, Strawberry Cheesecake Auto is a fast-finishing strain that will automatically begin flowering regardless of light. This strain consistently delights growers thanks to its high yields and big, dense buds.

Coming in at under 200cm, Strawberry Cheesecake is pretty compact, making it ideal for growing in confined spaces. Don’t let the size fool you, though – what it may lack in stature, it more than makes up for in flavour!

Skunky with fruity lemon notes, this strain is an absolute treat on the palate. THC content is around 15%, and its mostly indica nature means the effect is quite physically relaxing but mentally stimulating at the same time. Strawberry Cheesecake Auto is ideal for relaxing daytime use without serious impairment.

Jack Herer FAST

To include something for everyone, Seedsman presents Jack Herer FAST. What better than a legendary old-school strain that’s ready in just seven weeks if you need weed in a hurry?

This speed demon of a plant combines the classic Jack Herer cannabis strain with FAST genetics, reducing the waiting time and bringing top-notch buds to you quicker than ever. Jack Herer FAST is another easy-to-grow strain suitable for beginners and will yield a respectable 400 gm/m2 of high THC (20%) resinous buds.

Jack Herer FAST is a squat plant and will have a limited stretch to just over 100cm. It maintains the sweet peppery taste of the original and is every bit as potent as you’d hope.

Cultivation information, and media is given for those of our clients who live in countries where cannabis cultivation is decriminalised or legal, or to those that operate within a licensed model. We encourage all readers to be aware of their local laws and to ensure they do not break them.

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.

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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.

Rhodelization

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).

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.

Conclusion

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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