If you're one of those thrifty folk who saves seeds of a favorite variety from one year to the next, it's a good idea to make sure your seeds are still viable. From Burpee, here's how-to information:
Wrap a few seeds in a moist paper towel, and place the towel in a plastic bag. (Label the bag if you'll be testing more than one variety.) Place the bag in a warm location and check the seeds after a week. If the seeds have not begun to sprout, throw them all out and order new seeds. If only one or two of the seeds have germinated, either throw them all out or sow them thickly to make sure you'll have enough seedlings.
_ Los Angeles Daily News