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planting marijuana seeds directly in 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.

There is, of course, a far simpler way to germinate seeds. Ideal for beginners, the feminized starter kit by Royal Queen Seeds has everything you need to kick-start your next cannabis project.


Arguably one of the least effective methods, but it is still viable. Incredibly simple to facilitate, beginner growers may opt to germinate their seeds in a glass of water. Half-fill a glass or bowl with water that is approximately 22°C (71°F).

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.

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.

Amongst the best ways to germinate cannabis seeds, this soil germination method is a low risk, easy method that explains how to germinate your seeds in soil. Germination can take 3-10 days, depending on environmental conditions and variety

Prepare your pots with clean fresh soil. It is often easy to use small pots for this, and transport them to a larger container later.

How to germinate seeds in soil

Make sure your soil is wet, but do not soak it. It needs to be damp but not soaked, otherwise you risk your seeds to rot. In most countries, normal tap water is clean enough to use. Do not add any additives to the water.

Cover the seed with soil and press the soil gently.

Cover your pot(s) with kitchen foil or microwave foil (with the small holes). The foil will act like a small greenhouse, keeping the inside of your pot warm and moist. Perfect for germination.

Sowing (direct seed) a seed into a soil growing medium is commonly used and in this method, we’re about to explain you will plant the seed about 0.25 – 0.50 inches into a soil container.

Always be very delicate with germinated cannabis seeds and small seedlings. A common problem that is encountered when growing with Rockwool; it is harder for seeds to sprout through the growing medium.

If you intend on using Rockwool then you will want to place the cannabis seed in it after it germinates. There are a few companies that make Rockwool that have a hole cut out of the top where a Rapidrooter® plug can insert into.

One way is to cut a plastic bottle in half then drill or cut a small hole in the side and place it over the soil to cover over where the cannabis seed is planted. This will help keep the soil moist and the air around it humid.

Other ways include purchasing a plastic dome to place over the soil or place a plastic baggie and even a piece of cellophane over the cannabis seeded soil. You will then place the cannabis seeded soil under a light source, which may be a T5, HID light, or the natural sun.