If you want to grow vegetables and save the seeds for the next growing season they must be non-hybrid or open pollenated. Most of these gardening seeds are included in the heirloom seed category. Each seed requires specific treatment and care to insure viability. You must learn these procedures to grow your garden year after year. Some seeds are packaged to provide longer storage than the usual one year shelf life. I’ve seen people saving seed packets from growing seasons several years ago but most are only guaranteed 85% germination in the year they are produced with viability dramatically falling after that time. Learn to grow, collect, store, and use your own gardening seeds.