The dome of the plastic container will create your seeds’ own mini tropical climate. If you then place all the components in a temperature-controlled cupboard, you will have created a self-perpetuating supply of moisture—no need to touch the seeds again until they are ready to be transferred to your final growing medium as a young seedling. Using the stone wool block method, your seeds should germinate in one to two days.
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.
• The ideal temperature is between 22° and 25°C (71–77°F)
• Your growing environment should be damp/moist, but never wet
• Relative humidity range should be between 70% and 90%
• Seeds favour fluorescent lighting (Cool White code 33)
• Minimise the amount of seed handling you do
• In hydroponic/rockwool plugs, the ideal PH value is 5.8–6.2
PLANTING DIRECTLY INTO SOIL
Timescales can vary, as it all depends on how ideal your germination environment is (see the golden rules above). Even the worst grower could make a seed germinate, but it may take a few weeks and, of course, increases the risk of a weaker plant.
You will need to invest in a few pieces of unique equipment, but by using stone wool blocks, you can create a perfect utopia for germinating cannabis seeds. Soak the stone wool blocks in the same way you would a soil medium. The wool will retain the moisture and prevent the need to water during the early stages of germination. After the wool blocks are soaked, stick them in a plastic tray that also has a lid. Large cake tubs are ideal.
Place one sheet of damp kitchen towel on a flat surface. Space your seeds a few centimetres apart before placing the second piece of kitchen towel over the top. You need to ensure both pieces are damp, not wet. Once again, when the white root tips reach 2–3mm, move the seeds (carefully) to soil pots. Use the same guidance found above for planting techniques.
Probably one of the most common methods of germination. The kitchen towel method comes in several iterations. Some growers use cotton wool pads or absorbent pieces of paper. For this guide, we will be using kitchen towel as it is readily available and holds moisture relatively well.
If buying from a reputable breeder or seed bank, growing from seed is the best way to ensure your plants will have solid genetics and start clean, meaning they won’t come with diseases or pests.
A couple big drawbacks, though: Autoflower strains are known for being less potent. Also, because they are small in stature, they usually don’t produce big yields.
How weed clones work
But if the seed you found looks decent, you might as well germinate it and see what sprouts.
To create a dark, protected space, take another plate and flip it over to cover the seeds, like a dome.
Also, autoflower plants are small—perfect for closet grows or any small grow, or growing outdoors where you don’t want your neighbors to see what you’re up to.
The dimple should be about a couple of centimeters deep. If you are using a pencil, an easy way to measure is by making the tiny hole erasure-deep. Like any plant, you do not want to plant the weed seed too far in the growing medium.
Now that you have planted your weed seed, you are well on your way to growing a beautiful plant. When the time is right, you may want to transfer it outside. As stated previously, you will want to wait two weeks for the cannabis to become strong enough to withstand the elements.
Step 2 — Make a Small Dimple
The positioning can help the top of the plant and its roots grow out correctly. The stem could bend and not develop properly, and the roots might sprout upward. The weed seedling might not turn into a healthy adult plant.
A shallow hole could mean the marijuana seeds will dry out. If you are planting seedlings outside, shallow holes could introduce the risk of them getting disturbed in some way. An easy way to ensure the pencil or pen goes down far enough is to put it next to a rule. You can mark the correct spot before inserting it into the soil.
Now that you know how to plant cannabis seeds in four easy steps, you might still have some questions about the details. Here is a list of frequently asked questions to answer some you might have: