Finding a cannabis seed in your stash is not ideal, but we’ve all been there before. Although much less common than it once was, it still happens. Sometimes you’ll notice one when grinding down some flower, or you’ll see one pop, spark, and crackle from the heat of a lit bowl.
In commercial cannabis production, generally, growers will plant many seeds of one strain and choose the best plant. They will then take clones from that individual plant, which allows for consistent genetics for mass production.
Most cannabis plants begin flowering when the amount of light they receive on a daily basis reduces. Outdoors, this happens when the sun starts setting earlier in the day as the season turns from summer to autumn. Indoor growers can control when a plant flowers by reducing the daily amount of light plants receive from 18 hours to 12 hours.
Can I grow a seed I found in a bag of weed?
Through cloning, you can create a new harvest with exact replicas of your favorite plant. Because genetics are identical, a clone will give you a plant with the same characteristics as the mother, such as flavor, cannabinoid profile, yield, grow time, etc. So if you come across a specific strain or phenotype you really like, you might want to clone it to reproduce more buds that have the same effects and characteristics.
Keep a close eye on the temperature and moisture level of the soil to keep the seed happy. It’s very delicate at this stage. Use a spray bottle to water it—over-watering can suffocate and kill the delicate sprout.
There are a few indicators that will give you a sense of whether the seed is worth germinating.
Check out Johanna’s full video series on how to grow weed on Leafly’s YouTube .
Alternatively, you can try pollinating your female plants using a more “natural alternative.” Simply place your male plant in the same room as a female and give it a few good shakes once or twice a day for 2-3 days. This will help release pollen into the air and onto the bud sites of the female.
When we talk about cannabis it’s easy to get caught up in the beautiful females that produce those cannabinoid-rich buds we all love and treasure. In fact, we have become so focused on the female cannabis plants that it’s almost considered a bad omen if a plant happens to turn out male.
There are a few simple ways to collect the pollen from your male plants:
HOW TO USE CANNABIS POLLEN
Pollen is used to fertilize female cannabis plants and create seeds. In the wild, cannabis pollen is transported from male plants to females via the wind. However, in a manmade grow op growers will collect the pollen from males manually and then apply it to the females when they’ve started developing flowers.
By this time, the developing buds on the female plants will have white wispy hairs. These are used to naturally collect pollen from the wind in the wild.
4 weeks after pollinating your female you can begin checking in on your seeds to see if they’re ready for harvest. Simply pick a seed out from a pollinated bud; mature seeds will have an incredibly hard shell and be a dark brown or tan colour. They might also have some light striping on the outer shell.
In order to pollinate your plant you’ll want to apply your harvested pollen onto the bud sites (usually located where leaves meet the stem of a plant) using a brush. This will cause the buds to develop seeds which can be collected and grown in the future.
Wouldn’t it be sweet if it was possible to grow all females from seed, every plant, every time?
This is not the result of genetic or stress-induced hermaphroditism. They are genuine XX chromosome female bananas. With all the genetic information from the female and no Y chromosome, using rodelized pollen creates female-only seeds, although as with colloidal silver, an occasional male may appear.
Hint: Make two clones once a plant has been selected, one to be feminized and one to be left for pollination. This way, a separate breeding space is created and accidental seeding of other plants, or an accidental sneeze pollinating a whole grow cupboard, is avoided.
When sexing begins, male pollen sacs will develop instead of female calyxes and pistils. Male plants mature much faster than females, and viable pollen can be expected within 3–4 weeks once the plant has been sexed. Some growers will spray until the plant shows sexual growth, just to be sure the method has worked. Make sure these plants are well-isolated from any flowering females. A burst pod can release millions of pollen spores, and it only takes one spore per hair to create a seed.
Plants bred using feminization are homozygous. This can have two effects that can’t be assessed until the seeds are grown. Homozygosity will increase the dominant or recessive traits of the parent in the progeny, so features you don’t want and do want can be amplified. Genetics is a weird, weird thing.