Enjoying the sweet flavor of a big, juicy watermelon is one of summer's pleasures. Better yet, it's a no-guilt, low-calorie, fat-free, sodium-free treat. If you want to try growing your own watermelon, buy a traditional seeded watermelon and save the seeds. Put them away for the winter and plant them next spring when the ground is warm.
Put the watermelon seeds in a colander and rinse them in cool running water. Add a drop of dish soap, and rub the seeds and soap gently between your fingers, removing the remaining melon as you rinse.
Spread the watermelon seeds in a single layer on a piece of waxed paper. Make sure the seeds aren't touching, because they can become stuck to one another and will be very difficult to separate.
Place the tray of watermelon seeds in a well-ventilated area for one to two weeks until they're completely dry. Put the dry watermelon seeds in a white envelope, and put them in a cool, dry place until spring.