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storing cannabis seeds

Storing cannabis seeds

Silica gel crystals absorve humidity

Thus, the best way to store our seeds can be an opaque, airtight container containing few silica gel sachets to keep humidity levels low (remember that the ideal humidity should be 10-20%). Put the container in the fridge; normally, people have their refrigerators at 4ºC, so putting the container inside the vegetble shelf is the best option, since temperatures are slightly higher there (as we mentioned, seeds should be kept at 4-8ºC).

Since marijuana seeds are relatively expensive, we should know how to properly store them so we don’t waste money and time for not having our seeds correctly stored before the germination process begins.

Optimal conditions for storing cannabis seeds

Cannabis seeds stored with silica gel (Photo: Dinafem)

Since they are living organisms, cannabis seeds must be stored under certain temperature and humidity conditions, otherwise they gradually lose their germination potential, what may cause the germination process to take up to 6-7 days. In worst cases, seeds don’t even germinate, when they should have done it within the first 48-72 hours since we started the germination process.

Temperatures between 4º and 8ºC and humidity levels between 10% and 20% are perfect to keep cannabis seeds in perfect conditions. Seeds should also be kept away from any light source, since it is another factor that can harm our seeds and decrease their germination potential.

Cannabis seeds can be perfectly viable after more than 7-8 years if kept in good conditions, what can be reduced to few years (2-3) in case of not meeting these parameters. We have recently (2015) tested 25 seeds harvested in 2007 with a 24/25 germination ratio. Those seeds were kept as this post explains.

Storing cannabis seeds

You can still store them in a fridge, it depends on what you prefer and what options you have available. Ideally, you want to store your seeds in a cool, dark, and dry place.

If you’re storing your seeds for a couple of months it’s better if you store them in the refrigerator. This will guarantee the seeds don’t suffer from temperature swings. By keeping them in their original package or in a light-proof container you ensure they will be good for as long as you need.

Seeds are where all begins, the care you give your seeds will influence not only in how your cannabis grows but in the final harvest.

Enzo Schillaci

5. Storing Seeds For Months

Whatever your reason may be for having seeds, remember that taking care of them is one of the most important things you can do for your harvest. A badly stored seed may not germinate, and if it does it may not grow properly.

We recommend storing them in the vegetable drawer or far back in the refrigerator and using a small cooler or something similar so the temperature doesn’t oscillate when opening the fridge door or if the power goes out.

Tip: When storing seeds in the fridge or freezer you can add silica gel sachets to ensure they’re completely dry.

4. Storing Seeds For Weeks

If there is as low as 8% humidity in the container it can cause fungi to appear inside and outside your seeds, at 40-60% your seeds will sprout and beyond that, they can drown in less than a day.

As we’re dealing with nature, you need to keep certain conditions or this can have an impact. Even though seeds have a hard shell and are fairly robust, you should have the following points in mind to avoid any kind of problems in the future.