Herbies

Planting Germinated Cannabis Seeds The Right Way

Last updated: 14 April 2021

how to plant germinated weed seeds

Planting germinated cannabis seeds means making them crack and show the taproot between paper towels or in a similar setup, and then gently transferring them into the medium. Knowing your seeds are viable and alive gives you the peace of mind to patiently wait for the sprouts.

It’s possible to plant pot seeds the way nature intended: straight into the medium. However, planting germinated cannabis seeds is the method least taxing to your nerves and that gives you maximum control.

Planting Germinated Cannabis Seeds: Why And When?

For experienced growers, germinating marijuana seeds is something done almost on cruise control. However, first-timers may find this a nerve-wracking ordeal. They start to panic and make all kinds of mistakes. Nonetheless, germinating cannabis seeds before planting them has its benefits.

Disclaimer: Cannabis cultivation is illegal in many regions. Please ensure you are aware of the laws in your area before attempting to germinate or grow cannabis seeds. This content is intended for educational purposes only.

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Why Germinate Seeds Before Planting Them?

According to ResearchGate, planting marijuana seeds after germination, not before it, is the least traumatic germination method not only for the grower, but also for the plant. When the seed is awakening, the conditions should be just right. Otherwise, you can run into problems:

  • The medium can be made too moist, and this can lead to damping off and similar issues.
  • After a couple of days, the soil begins to dry out, starting from the surface. If the seed hasn’t cracked by this time, it won’t crack at all due to the lack of moisture.
  • If you plant the seed too deep, it can suffocate, especially if the soil is soaked with water.
  • Some seeds take longer to sprout. Inexperienced growers lose their patience and begin to excavate, damaging the seed in the process.

Because of all this, it’s always safer to germinate your seeds first and then put them in the ground.

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When To Plant Germinated Marijuana Seeds

Suppose you’ve placed weed seeds between moist paper towels. The seeds may crack and show taproots after only 12 hours, but this usually takes longer – typically, a day or two.

You don’t have to rush and plant them as soon as you see that your seeds are alive and well. Provide a few extra hours for the taproot to become a bit longer – a half-inch (about 1cm) is okay, although more than an inch (2.5cm) is too much and should be avoided.

Planting germinated weed seeds

When to plant germinated cannabis seeds

Planting Germinated Cannabis Seeds Step By Step

The whole process is actually very straightforward, quick, and seamless, but for your convenience, we’ve broken it down into separate steps.

  1. Take an opaque solo cup and fill it with potting soil.
  2. Water it, but not too much. Make the soil moist, without making it wet through. The water should be drinking quality, left to de-gas for at least 24 hours, and have a pH between 6.0 and 6.5. DON’T ADD ANY NUTRIENTS JUST YET! Nutrient-rich soils are actually damaging to young sprouts. If you absolutely insist on using something, let it be some innocuous organic product such as Endoboost Hydro or Superthrive, but definitely nothing stronger.
  3. Take a pencil and make a hole in the soil big enough for the seed and its taproot.
  4. Gently put the seed in the hole with the root pointing downward. Use tweezers, making sure not to touch the root or damage it in any way.
  5. Cover everything with a bit of soil.
  6. Now spray some water on top or gently pour just one teaspoon of water. This will make the soil settle around the seed and its root.

That’s it. You now know how to plant germinated weed seeds.

What To Do Next

The seed will soon be up, shed its outer shell, and grow first the cotyledons and then the true leaves. At the same time, the seedling will develop its root structure, which will soon fill the whole medium and reach the bottom and the sides of the solo cup. Depending on its size, this could take 1 or 2 weeks. By then, the seedling will be strong enough for you to transplant it into a bigger container or plant it outside.

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FAQ:

How deep should I plant seeds after they’ve germinated out of their shell?

Some people leave the ‘helmet head’ stick just above the surface, while others completely cover the seed with a bit of soil. It’s up to you, really. However, try not to place the seed deeper than half an inch (1cm) under the surface.

How can I plant germinated cannabis seeds with long taproots?

If the taproot is long and winding, make the hole deep and wide enough that the root fits without bending. Then fill the hole with soil and water a little, so that the soil settles and isn’t too loose around the root.

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by
Jason curcio
When I put seed into pot soil after germinating do I put out in sun ?
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Herbies
Hello Jason! That's right, you will need to put the pot in a sunny spot, or under artificial lights
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gary
I grow outdoors and my plants never produce dense, tight buds, what am I doing wrong?
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Herbies
Outdoor buds are often a bit looser due to low light intensity and temperature fluctuations. Dense buds are generally the result of strong, consistent light (like indoor LEDs) and suitable genetics. You can try light defoliation to improve airflow and light penetration, and be careful not to over-fertilize with nitrogen at the end of flowering.
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Shell Bell
I live in New Jersey, is it too late to start sowing and planting?
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Herbies
Hello Shell! Given the local climate, it's not too late, but you need to act quickly. Autoflowering plants are the safest option, but photoperiod plants can work if you choose fast-growing varieties.
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A human
Thank you, the information was clear and helpful. I am very grateful to everyone involved.
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Dan
Can I use distilled water? My tap water is awful.
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Patrick
Should the sprouted seeds in the pot be left in darkness or light to germinate?
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Herbies
Hello Patrice! The pots do indeed need to be in the light, otherwise the seeds won't just germinate.
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Hush puppy
I have big hands and thick fingers, and when I tried to take the sprouted seeds out of the water, they stuck to my fingers. So should I just use tweezers?
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Andrea
Same problem... I first put mine in a damp white towel and then I picked it up with tweezers!!
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Herbies
Hello! Using tweezers is indeed a wise decision because it is not only practical, but also sterile.
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seth from virginia
I recommend planting by hand and not with tweezers because the seeds will come out of the tweezers as they just did to me and you will lose your seed.
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ikie70s
Exactly... I lost some seeds down the damn sink doing that...
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The Devil
One question if any of you can answer; is there a way to identify male/female plants once they have started to grow or is it only possible to tell once they start to flower?
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Cale Holder
If you let the plant vegetate long enough, it will show its sex during the pre-flowering stages. Sometimes it's hard to tell from the pre-flowering, but I'd say 95% accuracy this way. Aside from that, you can usually tell with certainty about 6 to 9 days into flowering. I don't think I've ever misdiagnosed a pre-flowering stage, but I've certainly questioned it before.
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ikie70s
Obtain only feminized seeds
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Maryanne
If only I knew!! So frustrating
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Herbies
Hello, there are actually several ways to distinguish male and female plants. For example, the difference in stems; male plants are thought to have thicker stems because they are generally taller than female plants. Another way is to look at the leaves; female plants are thought to have more. That being said, we must point out that such methods are not always applicable and can be misleading, so ultimately, it's best to wait until they begin to flower.
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