Most vegetable seeds can be stored for many years without extra ordinary means and they will germinate. The percentage and vigor of the germination will vary according to how old the seed is and how it was kept. Generally speaking, the cooler and drier they are the better off the seeds will be. Many people want to freeze their seeds, but that's not something we recommend as the seeds can be severely damaged if not done properly.
We also get asked frequently if vegetable seeds can be vacuum packed. Remember - seeds are alive! They need to breathe just like you - but like you, when you're sleeping, you use less oxegyn - so if kept cool and dry, the seeds won't need much oxygen. We sell kits that you can store your seeds in using mylar, which is a good barrier for air and moisture. But we don't seal the bags without air in them - the vegetable seeds need the O2.
Most seeds will store naturally for at least 2-3 years if kept in a cool basement in a dry, sealed container. However, if you would like to store them for longer, reducing their moisture to less than 10% will allw you to extend their lifespan up to 10+ years. But remember - seeds are alive, so in order to reduce their moisture, you must not let them get hotter than 96*F. Putting them into a controlled environment where you can hold it at 95* for up to 10 hours will reduce most seeds moilsture levels safely.
See the chart below for the natural (i.e. just left in a cool dry shelf in their paper packets) seed life expectancy:
I too would like to know more about seed storage. How do I store the seeds properly in a fridge or freezer. Like the above poster I've seen many conflicting reports. Seed vaults store the seeds frozen so it must be possible if done correctly. Please help if you know how they do it.
I just received my order and am delighted with the service and prices. I would like to find ACCURATE information on storing the seeds, especially the few packages that were marked for this past season. I have read conflicting reports on storing in the freezer, moisture, etc. I was wondering about storing in a vacuum sealed jar in the refrigerator. Any help would be appreciated.
Thanks .. great seeds last year close to 100% germination ratio.Charles
You guys did such a wonderful job! I just wanted to say Thank You!Kim
I just recently ordered seeds from you for our school garden in Oakland. The reached us so fast and we are very happy. The kids were especially happy about the free watermelon seeds. Thank you so much. When we need more seeds, we will definately...Ms. Sally
The pkg w/my order arrived. Thanks so much... I WILL be visiting your site again and again !Donna
Hi. wow great website and even better your goals and commitments.John
Thank you so much for sending my order so quickly. I want to thank you for the extra package of eggplant seeds That was very pleasant and unexpected.Kaye
I really like your emailed newsletters. I'm a blind gardener and very into organic and sustainable gardening. Keep up the great work.Gilbert
I ordered a variety of vegetable seeds last spring. I have to tell you that the germination rate was better than any other heirloom seeds I have had before, and the plants thrived! In this climate zone 4 in Minnesota, the weather can do just about...Diane
I've heard good things about your company! THANK YOU!Cathy
Thanks. The marigold seeds i brought from you last year did very well and there is another fact I wanted to share with you, which is that the Kamut wheat did very well in my poorish soil that i did not fertilize for it!Rose