Because only female cannabis plants produce buds and you want them to focus all their energy on producing buds and not seeds, it’s important to identify and get rid of male weed plants so they don’t pollinate females. If females are pollinated, it will give you buds filled with seeds, making your weed harsh and unpleasant.
It’s important to keep the delicate seed sterile, so don’t touch the seed or taproot as it begins to split.
Ask yourself a few questions to decide if it’s worth the time and energy to grow the seed.
Remember, once a seed germinates, the real work begins. Sexing, selecting, vegetative growth, flowering, and the eventual harvest all lie ahead.
Within a week or so you should see a seedling begin to grow from the soil.
Cannabis seeds require three things to germinate: water, heat, and air. There are many methods to germinate seeds, but for the most common and simplest method, you will need:
If you’re ready for a more serious approach, make sure you have the space for a proper garden and pop the seeds to see what fruit they bear.
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.
Just as with standard male to female crossings (which is a heterozygous process), a number of plants will need to be grown and the best selected for mother plants and future breeding. With enough room, hundreds if not thousands of new plants can be grown in order to select the best of the best phenotypes.
TECHNIQUE 1: COLLOIDAL SILVER
Once the plants have been sprayed with colloidal silver and the pollen is collected, they are write-offs—86 them and don’t smoke them. Giving them a thorough rinse will not work. The colloidal silver is a systemic treatment absorbed into the plant through the foliage and not a topical application. Be safe and bin them.
Plants can be induced to grow male sex organs as late as four weeks into flowering. Though spraying one week prior to the light changeover is recommended for clones. If a plant grown from seed is being used, wait until the plant has sexed before spraying so you can be sure it is female.
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.
regular marijuana seeds are easy to create through the method mentioned above and will lead to high-quality plants that produce well. However, some growers will want to make sure the seeds they use are feminized. This enables the grower to ensure they don’t end up growing any male plants, especially when they don’t intend to pollinate the female plants that grow.
With regular seeds, it’s not uncommon for more than 70% of them to become male plants, with just the remaining few being female plants. Unfortunately, if pollination is not desired, that means there will be a lot of plants from each batch that need to be disposed of. A grower who wants to grow 10 plants at a time may not be happy starting 20 seeds and finding out they only get six female plants. It’s hard to predict which ones will be male or female, or how many of them will grow, so it leads to wasting seeds and a possible lower harvest in the end.
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.
Why Feminize Marijuana Seeds?
Cross-pollination can be a concern, so some growers will want to hand-pollinate the plants to minimize this risk. To do this, they’ll want to pick out the right male plant. It’s best to choose one that has all of the top qualities, then remove all of the rest of them. To pollinate by hand, the male plant used for pollination needs to be isolated from the female plants. The lighting should be changed for the male plant to encourage it to start producing pollen right away.
Without access to pure silver, it’s necessary to use tools like a battery and connector, alligator clips, and a soldering iron. With these, the alligator clips will be attached to silver coins. The coins will need to be placed in the water without the alligator clips getting wet at all. This needs to be left alone for at least seven hours, so the silver ions will float to the top. The mixture mentioned above can then be created and used on the plants that are intended to create female pollen.
The next step needs to be done carefully. Female silver haze plants that are going to be pollinated should be separated from the plants that won’t be pollinated to avoid contamination. Next, the grower will need to place some of the pollen in the cola of the female plants that are going to be pollinated. This can be done by placing the pollen in a bowl and using a small paintbrush to place it on the plant’s cola. Avoid putting it on more than one for each plant and make sure the pollen doesn’t get on the flowers. After four days, the plant can be put back with the other female plants, and lighting can be switched to 12 hours light and 12 hours complete darkness.
One option growers have is to use feminized seeds. These seeds have been specially treated to ensure they only produce female plants . This reduces the worry about male plants growing and enables the grower to better predict how many female plants they’ll have. With the latest methods for feminizing seeds, it is possible to end up with 100% of the seeds planted growing into female plants.