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marijuana seeds will not germinate

Among other critters, ants are particularly keen on eating the taproots from sprouted seeds. To keep your seeds safe, use bird netting, ant traps, and other preventative measures like neem oil or slug traps. Check on your seeds often so you can spot infestations and act before they become a problem.

Why are my seeds not germinating? With our germination troubleshooting guide, you can get to the bottom of why your weed seeds aren’t popping. Avoid these germination mistakes and get your grow off to a great start!

Keep an eye on your seeds and transplant when the taproot measures 1–2cm at most.

14. PESTS, BIRDS, INSECTS…

Solution: Only plant your seeds in a sterilised (i.e. new) potting mix as this won’t contain these harmful organisms. But your substrate isn’t the only thing you need to keep an eye on. You’ll also need to make sure your containers are clean, as these can also carry mould and other harmful pathogens. If you encounter fungus problems when you’re germinating, it is best to get rid of the seed and the contaminated growing medium and start over.

Likewise, if your seeds are too close to the surface, there is a risk they’ll dry out before sprouting, or the seed will emerge but can’t shed off its cap. The happy medium is to place your seeds about 0.5–1.0cm deep and just lightly cover them with soil.

Got a bag of “mystery seeds” from your local source or “bargain seeds” from an unknown vendor off the internet? If so, chances are they won’t germinate. Reputable seed banks like Royal Queen Seeds will always test their seeds for quality and germination rate.

If you allow your seeds to germinate for too long, transplanting them safely will become difficult. The reason for this is that the longer the roots are exposed to air and light, the more likely they are to become damaged. Moreover, the longer the taproot, the higher the risk for accidental damage when transplanting.

These are the 10 most common reasons why a cannabis seed does not germinate. Fortunately, the solutions are fairly simple to implement. What are your experiences with non-germinating cannabis seeds?

Weedseeds don’t germinate: It’s every grower’s nightmare: if you order some nice seeds, they don’t germinate. Or even worse, you’ve had them in your house for a long time, stored in the best conditions but still nothing happens.

4. put the seeds in and then put the coffee filter in the grip bag as shown below.

How is this possible?

Grab a coffee filter and a grip bag as shown below

1. Put the cannabis seeds in water for 24 hours, so that the skin becomes softer so that the seed can germinate more easily.

Cannabis seeds do not germinate for various reasons. We give you the 10 most common explanations for non-germinating cannabis seeds:

5 Hang the bag with a clothes peg or tape (make sure it is between 22 and 27 degrees).

This is a common mistake that usually results in non-germination, especially if the substrate hasn’t been previously watered before sowing the seed but is watered afterwards. By planting the seed directly in the substrate, we run the risk of it being buried too deep, made worse when we irrigate the growing medium post-sowing.

Although it may be tempting, germinating several seeds in the same container is not usually successful. In addition to the difficulty of correctly planting several seeds in the same pot, once they are born they will compete for the little space available for their roots. Having restricted root growth does not suit cannabis plants, which will grow more weakly and with greater internodal distance.

Direct germination in soil

Tim 2021-05-17
Hi Sean, thanks for your comment. As long as the soil is neither too wet nor too dry, there shouldn’t be a problem with the seeds. They can take a few days to pop their heads up above the surface once they’re planted, the root needs to work its way downwards and find a solid hold to be able to push the seed head out of the soil. Speaking from personal experience, don’t be tempted to dig around looking for them as you’ll probably do more damage than good. The only times that seeds didn’t come up for me were the times I overwatered them, it’s crucial that they get enough air at this moment and too much water can lead to them rotting quickly. Of course, if they totally dry out then they’re not going to survive either. At this stage, I’d just recommend patience, good luck! Best wishes!

Sean 2021-05-17
I had my seeds in the paper towel for 3 days. The tap-roots appeared(not out just showing a bit) and I planted them in the soil. 3 days have past and I haven't seen any progress. Is there a reason why this is happening?

If you look closely at a cannabis seed, you will notice that it has a slightly oval shape, ending in a point at one end and forming a small “crater” at the other end, which is called the crown. When planting your seed (whether it’s a seed that you want to germinate, for example, in a jiffy, or a seed already germinated on kitchen paper that you want to transplant) you must keep in mind that this crown should always be facing upwards.