This is something they do naturally as a way of perpetuating the species. When a female guesses she’s going to die and hasn’t been pollinated, she spontaneously generates fertile male flowers to self-pollinate and continue with the lineage.
The most common technique used to cause stress to female plants was known as “Light Poisoning“ or light stress. It’s easy, you just have to use irregular photoperiods, or often interrupt the night cycle of female cannabis plants during flowering.
Yes, there are, although not as effective and reliable as with STS, so we do not recommend them. But if you want to know other ways to make 100% feminine seeds of your favorite weed I’ll tell you. First of all you have to understand that all techniques are based on stressing a female plant to revert its sex to male, so it can produce flowers with which it can pollinate another female.
⛳ Making feminized seeds with colloidal silver
When we choose the varieties we want to cross we have to look at the desirable qualities, such as taste, production, effect, speed, and so on. But it must be clear that these features are only useful if they are transmitted to the progeny, a good phenotype is only a good phenotype if its qualities are not transferred to its descendants. On the other hand, if it transmits those qualities, it can also be considered a good breeding tool.
It is another stress process, in this case due to over-ripe, i.e. not harvesting in time or lengthening the flowering cycle of a female cannabis plant to produce male flowers. This method is not very good because of the small amount of pollen that is created, it is not worth it if you want to make many feminized seeds.
The females chosen to be reverted to male have to undergo a number of tests to prove that they are suitable for reversion. These tests are based on the resistance and sexual purity of the selected specimens and basically they try to induce different types of stress. Only plants that stay fully female will pass the test and then they can be considered good breeding tools.
If you want to make your own feminized seeds, I recommend you the STS method, it is the most used for some reason. You have to be careful not to inhale the gases it produces, protecting yourself with a mask, safety goggles and gloves for its manipulation, but it is the most effective technique. It is surprising to see an elite clone bloom as a male after having grown it many times as a female, I invite you to try it.
Colloidal silver is by far the easiest to source or make. It is non-toxic, non-caustic, and can be bought from a pharmacy or easily online. The other solutions can be dangerous, difficult to get a hold of, and expensive—except gibberellic acid, which can be found in nurseries, but is not as effective as colloidal silver. But if you want to watch some freaky plant growth just for the fun of it, give gibberellic acid a try. It is a growth stimulant and makes plants stretch and stretch.
With a bit of aforethought, it is possible to set up an efficient feminization breeding programme—and have female seeds from your favourite phenos on hand all the time. You never know, you might discover the next big thing!
TECHNIQUE 1: COLLOIDAL SILVER
There are a number of solutions that can be sprayed on female plants to create male pollen sacs: benzothiadiazole, gibberellic acid, silver thiosulphate, silver nitrate, and colloidal silver.
Growing from feminized cannabis seeds is a space and resource-efficient way of getting all girls, all the time. Find out how to create your own feminized cannabis with Royal Queen Seeds.
Colloidal silver is a distilled water-based solution in which microscopic particles of silver are suspended. The nature of colloids means the particles will never settle out and can’t be removed by normal filtering. Colloidal silver is available commercially, or you can make your own if you want to totally geek out (see how-to section at the end). It has numerous uses as an alternative medicine. For example, it is used to soothe burns, as an antiseptic and digestion stimulant in people, and as a fungal control in horticulture.
Marijuana growers have the ability to grow their own marijuana for personal use, but the output they can get from their seeds is limited by how many of them turn out to be female plants. If male plants grow from the canibis seeds, they need to be removed to prevent pollination and the female plants producing seeds. Since seeds can experience unexpected gender swaps anytime they are excessively stressed, this gives growers an extra reason to maintain the ideal environment for their indoor or outdoor plants.
Still, most growers will prefer to avoid pollination in most cases, as female plants that haven’t been pollinated will produce buds that are much larger and include a much higher amount of THC. Plus, if the female plant isn’t pollinated, it can stay in the flowering stage longer, which means it produces more buds overall. Most female marijuana plants that aren’t pollinated can produce flowers for more than six weeks, leading to a lot more buds compared to pollinated marijuana plants. All of these benefits lead to a much larger harvest for the green crack seed or gelato og strain grower.
How Feminized Marijuana Seeds are Created
Those who want to tell as soon as possible whether a plant is male or female can look at how quickly the plants are maturing and how tall they grow. For the most part, the male plants are going to be taller than the female plants. This makes it easier for them to get the pollen to the female plants, as it can simply fall below to the female plants that are close by. However, this is not 100%, so if the grower is unsure, they should wait until the plants are starting to produce buds to tell the difference between them.
Once the right plant is chosen, it can be removed from the other female plants and sprayed with STS. Once it is dry, it can be put back with the other plants. Soon, it will start to turn brown and might look like it’s starting to die. A few days later, however, it will end up coming back, and within a month it will have become a male plant. When this happens, the male plant can be used to pollinate the other female plants.
Growers must understand the sexes of marijuana plants and be able to tell the difference between male and female plants. When the plants are first growing, it’s difficult to impossible to tell which ones are male and which ones are female. When they have grown a bit and are nearing the end of the vegetative stage of their lifecycle, however, it’s possible to start to determine the sex of the plants. The male plants will start to grow what looks like buds, and they will give off pollen if they’re shaken. A couple of weeks after these appear, female plants will start to grow their buds as well. These do look different, so knowing the shapes can make it easier to tell which one is which.