This variability represents the original plants the professional plant breeder started with. You can get F1 hybrid seeds for many vegetables, including corn, tomatoes and watermelon. These tend to be similar from one generation to the next and are probably best for the person just wanting to save seed. These plants will vary some from one to another but will generally perform as advertised year after year. Make your own crosses The best way to create variability is to make your own crosses.
Some vegetables are easier to cross then others.
Vegetables with very small or multiple flowers in the same cluster are the hardest to cross. But many vegetables have relatively large flowers and are easy to work with. Squash is one of the best examples, with large yellow male and female flowers that are easy to cross. Saving seeds Saving seeds doesn't require any special skills, just a basic understanding of the flowering process and seed formation for each vegetable. Some vegetables produce seeds in a fleshy fruit, such as watermelon and tomato.