What You Need
A paper towel
A plastic sandwich bag
Lightly moisten a paper towel. Then, fold it in half.
Place 10 seeds on the paper towel. Then, fold the towel in half again to cover up the seeds.
Stick the paper towel in a plastic sandwich bag and seal.
Write the seed name and date on the bag. Then, store the bag in a warm spot (on top of the refrigerator works well).
Check the bag each day to see if any seeds have germinated and to re-moisten the paper towel, as needed.
Continue checking the bag until you reach the germination time listed on your seed packet.
Count how many seeds germinated. Use this to determine your percentage of viability. If, for example, 8 of your 10 seeds germinated, that would be an 80% viability.
70% and above is worth planting, but plant extra seeds to make up for the seeds that aren’t likely to germinate.