What you want to do is get an amber jar and put some rice inside it. Then take you pack of seeds and place them in there. Now there is some debate about this part. You can either store them in the fridge or freezer. Some say the fridge is better well others say the freezer is better. Me personally I store the in the fridge had a 100% sucess germination rate up to 3yrs. The amber jar keeps the light out and the rice keeps moisture out, all of which degrades seeds. Storing them in a cold enivorment also slows down the degration rate. I have heard of seeds store up to 10yrs like this and they were still able to germinate a couple. Every year your germination rate goes down, but in my opinion as well as other you are golden for about 3yrs with proper storage.