Try not to cover the pots with plastic or create a humidity dome over them. Air needs to pass through easily, and a buildup of humidity may damage the plant. Besides avoiding the wrong soil, make sure it is not too wet or too dry. Whenever you water the seedling, make sure it does not have the wrong pH level.
The seed has enough energy to push through a thin layer. The farther down it is, the more likely the soil could hinder the plant’s ability to grow. It might not be able to get the light it needs, and the stem could become weak. If you believe you planted the germinated seed too deep, try brushing away some soil instead of repositioning the plant.
The next step of planting a cannabis seed is to move it into a small hole. Gently pick up the plant and place it into the soil. Some growers prefer to use a clean pair of tweezers to transfer it over to the pot. It is critical not to squeeze too hard to prevent the germinated seed from getting hurt. Make sure to plant quickly to ensure the budding roots stay safe from excessive light.
How Long to Germinate Weed Seeds Before Planting?
The seed can easily break through the top of the soil without drying out. Again, placing a mark on the pencil can help you see when to stop pushing it down.
There are multiple things to avoid when you plant weed seeds. Common tips include not fertilizing or adding extra nutrients to the seedling. As mentioned before, the plants can be vulnerable to too high amounts of minerals.
Once you have everything you need, you can begin the process of planting your weed seeds.
The final step of the planting stage is one of the quickest ones to do. All you need to do is cover the cannabis seed with a thin layer of soil. About a couple of millimeters should do the trick. The thin layer is enough to block out the grow lights or sun while giving the seedling room to grow.
Marijuana seeds can be acquired from an array of sources and can vary in quality. For more info on how to buy marijuana seeds, check out our Guide to buying cannabis seeds.
With cloning, you don’t have to get new seeds every time you want to grow another plant—you just take a cutting of the old plant—and you don’t have to germinate seeds or sex them out and get rid of the males.
Cultivating males is important for breeders trying to cross new strains and genetics, but most people growing for buds will want to remove the males.
What are high-CBD cannabis seeds?
However, a type of cannabis called Cannabis ruderalis, which developed in extreme northern conditions without much sunlight, will begin flowering once the plant reaches a certain age—they automatically start flowering regardless of the amount of light they receive, hence the name “autoflower.”
If growing male and female cannabis seeds, they’ll start to show their sex organs, or “pre-flowers,” after 8-10 weeks from germination.
For the typical homegrower, it may be easier to obtain cannabis seeds rather than clones. Growing from seed can produce a stronger plant with more solid genetics.
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.
The soil pots will need small holes (roughly 10–15mm deep) for the newly germinated seeds to be placed into. Once the seeds are secure, you will want to place a fluorescent light 13–15cm (5–6 inches) away to encourage growth. Finally, don’t risk overwatering your seeds at this early stage. Use a plant mister to make sure they stay damp but not soaking wet.
To avoid disappointment, seeds that have a darker colouration stand a better chance of germinating, while pale green or white seeds are likely to fail. Even if dark seeds look slightly damaged, they should be planted anyway. There is a good chance they will still germinate, even if the outer shell is somewhat crushed.
Your growing pots will need to be placed in a damp climate that is within the temperature range listed under our golden rules. After 4–10 days, you should see a young seedling sprout, while the roots will have begun to develop underneath the soil. The entire plant and its soil can now be transferred to a larger pot, where normal growing routines should start.
CHOOSING YOUR GERMINATION METHOD
Three fundamental principles will trigger that first small taproot to appear: warmth, moisture, and darkness. With the promise of moisture, a single root will take shape before slowly developing into the cannabis plant we know and love. In the right conditions, seeds will begin to develop within 12–36 hours of moisture being introduced to them.
Maintaining the ideal temperature (between 22–25°C/71–77°F) and moisture for germination is tricky. Leaving seeds out in the open environment or on a windowsill is far from ideal; a DIY climate-controlled cupboard would do a much better service. A warming mat is perfect for maintaining a constant temperature, but it doesn’t tackle the issue of moisture.
Before you can be met with bountiful hauls of dank buds, there are several stages of cannabis growing that take precedence. Unless you can successfully germinate cannabis seeds, you won’t have a plant to harvest. Give your seeds the best possible start in life by reading our definitive guide to germination.
Planting directly into your growing medium prevents having to move seeds when they are at their most fragile. That first root tip is covered with microscopic filaments that are easily damaged. Given that both a cup full of water and moist paper towels are more prone to temperature fluctuations from their environment, planting in soil is a much safer option.