In a life or death situation, surgery may be the only option. Meaning—only do this if nothing else has worked because this technique ruins as many seeds as it saves.
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.
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.
4. SLICE THE SEED
To scarify your seeds, line a matchbox or other small container with sandpaper. Drop the seeds inside, shake vigorously for 30–60 seconds, then remove. You may not notice much of a difference, but the small micro-abrasions are sometimes enough to let water breach the shell and trigger germination.
The older a cannabis seed gets, the harder it is to pop. But hard doesn’t mean impossible. If you’ve been saving your seeds for a rainy day and it finally started pouring, these tips could help you get most, if not all, of your old beans to germinate.
Scarification, or scuffing the shell, can also help water pass through an older seed’s tough outer shell.
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.
Step 2 – Get rubbing!
Step 4 – Get paper towels
Best way to germinate cannabis seeds
This is a step that will help the seeds germinate so fast you’ll find it unbelievable. Generally, most cannabis seeds require at least 4-5 days to sprout, but by doing this you’ll make sure that the process speeds up by at least 2 days.
Note that you cannot overdo this step. Meaning the towels have to be moist – neither too wet nor too dry. Place the towels in a ziplock bag or anything that’s airtight. This is important since placing the towels in an open area will make them dry out faster and the seeds will not be viable anymore. Next, place the airtight container in a dry area. Now, you’ve done everything you can, and it all depends on time and the seeds after this stage.