Bitty, you don't have to unless you just want to plant some elsewhere. If I want to plant some in another part of the garden, I would just cut some of the bublets off and plant the small "set" , but the tops of these will finally bend over, and where they touch the ground they will root, and once you get a few you never have to buy anymore. I have also got a few potato onions growing, and they also multiply by growing several size bulbs in the ground and you dig these up, keep the largest and replant the smallest. I guess I just like growing alot of odd things!