Through the winter, store your harvested seeds in airtight packets or containers in the refrigerator or another cool, dry place until you're ready to use them again in the spring. Adding silica gel packets to your seed containers will keep moisture away and increase their shelf life. Also, don't forget to label your packet or container with the variety of tomato seeds you harvested, along with the harvest date as well. If seeds are stored properly, seed germination rates can reach 50 percent for up to 10 years.
Finally, if you find yourself with an abundance of healthy tomatoes during harvesting season, consider adding the seeds to your favorite dish! Chefs around the world highly recommend cooking with tomato seeds. According to a study published in the Journal of Agricultural and Food Chemistry, the seeds and the gel of a tomato actually contain three times the amount of flavor-enhancing glutamic acid as the flesh, and the seeds supply savory quality known as umami in many foods.
So, the next time you're cooking spaghetti or your grandma's famous homemade lasagna, consider tossing the tomato seeds into the sauce -- your taste buds will thank you.