A bit more on saving seed from You Grow Girl site.
- Testing Your Seeds
- If you are saving your seeds for extended periods of time, test the seeds before you use them to see if they will still germinate. This is easily done by placing 20 or so seeds (depending on size) onto a half-piece of damp paper towel. Fold it over so that the seeds are covered. Then place it in a plastic baggy with a few pinholes punched into it and set it aside in a dark, warm place. Bear in mind that some seeds need light to germinate and some have other specific requirements-some may need to be soaked first, or may require a certain temperature for germination. Knowing your seeds will help you in this process: however most seeds will do fine with the standard procedure. After a week check to see how many seeds have germinated. Again some seeds will have a longer germination period than others, so if they haven't germinated by week's end, wait another week to be certain. If a fair number of seeds have germinated then the seeds are good and can be used with little trouble. If few seeds germinate, increase the number of seeds sown per inch or don't bother using them at all.