Posted on

soaking cannabis seeds

So what method should you use?

I recommend you sterilize your starting soil by putting it in the oven at 200 F. (93 C.) for 20 minutes.

Step 2: Soak your seeds for 16 hours in regular (tap)water

With the paper towel method you do disturb the seedling (violation of rule number 2) by transplanting it from the paper towel to your soil / rapid rooter plug.

This way you’ll kill off any harmful bacteria and/or fungi present in your soil.

After you’ve put them in the oven for 20 minutes, you let the soil cool off.

The seed’s shell is made up of two pieces, with a seam going all around. The side that’s raised more than the other is the ridge. A hardened ridge can make it difficult for the seed to open. To remove the ridge, run a sharp blade along the ridge on both sides. Handle gently and it should come off without damaging the inside of the seed.

To improve your chances, use carbonated water and/or add one of these supplements that help with water absorption. Fulvic acid and most boosters also give your seeds a light dose of nutrients.

Scarification, or scuffing the shell, can also help water pass through an older seed’s tough outer shell.

3. REMOVE THE RIDGE

When your old cannabis seeds don’t want to pop, one of these four techniques could come to their—and your—rescue. Aging seeds are more difficult to grow than fresh ones and we’ll explain what you can do to help germination.

As you proceed through these steps, the risk of damaging your seeds past the point of recovery increases. Between each suggestion, give them a few days to a week to germinate. Allow the outside to dry each time to prevent rot. Do not try all or multiple techniques at once.

If you’re going to keep seeds more than a year or two, proper storage will dramatically increase the chances of late-stage germination. Place them in an airtight container. Put the container in a refrigerator set at 6–8°C with 20–30% relative humidity. If excess moisture is a concern, add silica gel packs to the container.

As cannabis seeds age, their protective outer shell hardens and prevents water from passing through. Unless the tiny, dormant embryo that lives inside the shell detects moisture, it doesn’t know that the conditions are right to sprout. As a first step, pre-soak your old cannabis seeds for about 12 hours to see if that does the trick.