Below we will go through 3 popular methods used to germinate old weeds seeds. Remember that we have to do the part by trying to keep the temperature between 26 ° C – 28 ° because that is where the clones seem to season-best. You must also ensure that the seed is kept in a dark area, as light can slow down the germination process.
Whether we obtained the seeds from a seed bank, a store, or a retailer, different cannabis seed strains have different colors. Mature cannabis seeds acquire a dark coat, while immature ones are brighter and usually white. The most visible colors are brown, tan, and sometimes black. In contrast, bright yellows and whites quickly identify immature seeds.
Ways to Germinate Old Cannabis Seeds
The second method involves the use of carbonated water with a pH below 7. This slightly acidic solution absorbs the outer layer of the seeds. Put the seeds in a container full of carbonated water and wait for about two hours. The solution loosens the seed coat and allows it to absorb water, which helps germinate.
Method 3 requires that we use a mixture of hydrogen peroxide to soften the seed’s outer skin. It would be best if we were careful when mixing the peroxide solution, as we can burn the seed, and it will never germinate.
The first step in any farming process is to make sure we have the right seeds, and the same goes for weeds. When harvesting autoflowering marijuana seeds, everything is preserved, and nothing is lost. This means that all types of seeds are ripe and immature. How do we distinguish good seeds from bad ones? You are considering the following.
So, the question of how to germinate old cannabis seeds translates to: how do you help moisture get inside your old seeds? The obvious first choice is to pre-soak them before germination.
Some people buy a special cracking tool for old cannabis seeds. This simple contraption applies mild pressure on a seed until an audible crack is heard. Others simply bite on the seed—ever so gently—until they hear it crack.
1. Place Old Weed Seeds in a Glass of Water
If stored properly, marijuana seeds can remain viable for many years. However, the longer you keep them, the harder it is to make them sprout. More often than not, you’ll have to use different hacks to successfully germinate old cannabis seeds. We’ll teach you how, but first, let’s see what conditions make cannabis seeds come alive in the first place.
The ridge is quite prominent on the seed. It connects the two halves of the outer shell, and when the embryo pushes against them, it’s this ridge that cracks. However, in older seeds, it’s too hardened by time and needs to be cut off.
Please note that, besides poorer germination rates, old cannabis seeds also take longer to sprout. So, how long exactly does it take to germinate old cannabis seeds? While fresh seeds usually germinate in 1–3 days, older beans routinely take as long as 7–10 days or even more. So, be patient, and, if the seed remains dormant, try one of the tricks described above—starting with the least invasive one. It’s also best to try them one after another, as opposed to all at the same time.