NiCKh609 said:

If i was to order seeds offline how long would they last if i didnt plant them and i saved them for a while?

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If you're not planning on using them for years, the best thing for you to do is to get something like those camera film containers, and put the seeds into it with an equal amount of slowly dried rice, or the right amount of silica gel. Essentially, you need to keep the humidity at about 5%. Throwing it in the fridge will help slow down the chemical processes inside the seed. Later on, I'll start digging for some much more detailed information on the matter.

Chapter 4 said:

and they should probably be dried (as i assume store bought seeds are) before freezing them....  i usually keep a silica pack or some rice in my seed bags to help keep things dry when storing.

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saltatory said:

keep them between 2-5C and in less than 5% humidity. you should prevent water and air from reaching them as well (use vacuum packaging and silica gel).

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Chapter 4 said:

i guess....but if there is too much moisture in the seed, its gonna freeze, and if that doesn't directly kill it i would think the thawing would (cant be good for the cell tissue).  cured weed still has some moisture doesn't it?  i would think too much for freezing seeds.  any thoughts?

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Quote:

keep them between 2-5C and in less than 5% humidity. you should prevent water and air from reaching them as well (use vacuum packaging and silica gel).

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that would be the best way i do mine as best i can like this (hundreds of species, but not weed), and they last many, many years.  very dry, some kind of material to absorb moisture, sealed jar in cool dark place.  after 12 years i have many seed stored like this (in ziplocks in room temps).