With proper storage, flower seeds can last many years and sometimes years after their predicted expiration. Seeds are living organisms that are dormant until they begin to germinate. While you can do everything right and store your seeds properly, you may still end up with some seeds that never germinate. This is why we recommend starting the germination process indoors with your saved seeds to weed out any that are no longer viable. One of the easiest germination methods is with a paper towel.