Marijuana seeds should be kept in a cool, dark place such as a basement or in your refrigerator. They should be in an air-tight container and must stay dry. Putting a cotton ball in with the seeds before storage can help suck up any extra moisture (this is why you often see little bits of cotton in seed breeder packs).
Heat and moisture ‘signal’ to cannabis seeds that it’s time to sprout, so as long as you keep the seeds in a dry, dark environment they can remain viable for years. I have heard cases of seeds sprouting after being in storage for 5 or even 10 years. However, you will notice that older seeds take longer to germinate than fresh seeds and a few of them may not sprout at all. As time goes on, fewer and fewer of the seeds will successfully germinate.
We have good news for you. Cannabis seeds can last a very long time. Let’s find out just how long and what you can do to extend their life.
Light signals the seeds to begin preparing for germination. Even if they don’t germinate, because the other factors necessary are not present, the chemical processes for germination can be triggered and then the seeds will not be able to germinate later on, when the time actually comes. If you want to ensure your seeds stay good as long as possible, keep them in the dark.
Factors Affecting How Long Weed Seeds Are Good For
Those are things over which you have no control, apart from choosing a top quality seed bank. What you do control is how you treat your seeds after they arrive.
The most obvious are cracks in the seed. If you see cracks in the hard outer shell, the seed is most likely no longer viable. Once the genetic material inside the seed is exposed, it is unlikely to germinate properly.
Say you’ve got some seeds you’ve kept for a long time. Is there any way to tell if they have lasted, or if they are no longer any good?
There is plenty of debate surrounding how long do marijuana seeds last before they go bad. Some people say that they can last for years if they are kept in the correct conditions, while others disagree and state that they can only be used within 6 months to 1 year after packing. So the question is, how long do marijuana seeds last?
Unfortunately, the answer to will a cracked seed still germinate is No. It cannot germinate as the valuable internal part of the seed that contains the genetic information of the plant is exposed, then the seed will no longer germinate. Great care must be taken to ensure the seeds are not damaged or crushed, including putting them in vials stuffed with cotton wool to ensure they don’t rattle around and harm each other.
Will Cracked Marijuana Seeds Still Germinate?
Cannabis seeds can withstand long amounts of time in storage, as long as they are well protected. A cool, dark environment with no humidity or strong aromas is good to store the seeds for a few months, but if you want to extend the shelf-life of the seeds, then they must be refrigerated.
How long your seeds will last can vary. If great care is taken for the seeds to be protected from humidity and light, and provided a cool environment the center of the seed will remain dormant, making the marijuana seed last longer. That way, the only thing needed to germinate the seed will be to soak them overnight in water then place them in a damp tissue or Jiffy plug and germinate normally.
As we mentioned before, marijuana seeds can be made to last very long if they are refrigerated. Without any interference, marijuana seeds can last a few months before they go bad, even up to a year if they are kept in a cool, dry and dark place, but if they are refrigerated, marijuana seeds can last up to a decade.