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can marijuana seeds freeze

Best way to store seeds?

I was thinking of saving any seeds I get from pickups and planting them in a few months when I have the space/money to do so. So how can i store seeds without them dying?

I was just about to post this question. I think that given the correct conditions, you can store seeds for hundreds of years if not more, which is why the "seed bank" is viable. Cannabis seeds are just seeds like anything else. Cool dark and dry I agree with, the freezer I do not. There are temperature fluctuations in the freezer and although things that are kept at a very low temperature degrade slower, the ice crystals that form can damage the cell structure. I'm by no means an expert. or even knowledgeable really lol, but I think this is right.

0 light, low humidity, few temperature variations and a constant temp of 45, 55 degrees F would probably be ideal. That's my guess.

Here's the deal, I think if the moisture isn't properly removed/maintained, and the seeds then frozen in a good freezer, then freezing them might not be good. This seems like a good question for r/askscience.

EDIT EDIT EDIT: Yes, best to keep them out of the fridge or freezer, unless you have a nice dedicated setup strictly for storing seeds. Removing O2 from the containers looks like a good option for LONG term storage. More info

EDIT EDIT EDIT EDIT: This has awesome and complete information. They need to be dried. Best link yet!

Alys Fowler: why seeds need a cold snap

S eed dormancy sounds rather appealing right now. I’d like to wrap myself up in a warm coat and spend the next few months in stasis until spring arrives. If only that was what really happens. It may seem as if seeds are just lying in the soil waiting for the temperature to rise, but something else is going on.

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For many seeds, dormancy is broken not by a rise in temperature but by a drop. It’s the cold of winter these seeds are after. The season’s cycle of frost, harsh winds and bitter rains slowly softens the tough seed coat, rolling it around in the soil, freezing and then thawing again, until the seed can take up water and germinate. This is known as stratification, or cold treatment. You can tell seeds that need a cold period before germinating because they have hard bony coats that are impervious to water.

Having such a tough shell ensures that germination occurs only when conditions are right. Weather fluctuates; you don’t want your seed jumping into germination just because autumn has a few cold nights and then a warm one. It’s not spring yet and those cold nights did not represent winter. So time and temperature are the keys necessary to unlock germination for many seeds. For others it may be light, smoke, certain chemicals or spending time in an animal’s gut.

Many domesticated plants have undergone numerous selection pressures, so dormancy isn’t such a big deal. Wild plants, however, are fiercely dedicated to their dormancy methods. Common plants that require stratification include apples, sloes, hawthorns, plums and acorns, but also smaller seed from herbaceous perennials such as aquilegia, lavender, sage, sedums, perennial sweet peas, wild rose and hops.

One way to break this dormancy is to leave it up to nature. This is not the fast route, but it’s a sure one. Sow seeds outside now in pots, cover with grit (mostly so that it’s easy to weed out any interlopers) and leave them to the elements. Be patient: signs of life should appear, if not this spring, then the following. You can also make a seed bed for stratification. Use a gritty compost mix, one part grit to three parts compost. Excess moisture can be a problem, so make sure it is free-draining.

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Or cheat. You can use the fridge (and sometimes the freezer), placing the seed either on a damp sheet of kitchen towel or in damp vermiculite in a freezer bag (on which you can write all the details: seed source, date, temperature requirements etc). Most seed that requires a winter chill will need between two weeks and three months before dormancy is broken. Keep checking the seeds until you see signs of life. Once they germinate, take them out of the fridge, pot them up and keep them frost-free until you can put them outside.