These grow back every year at the lake. The original owners had a huge garden. I dug these up and thought they were garlic. Brought them home one year and hung them to dry (like garlic). Didn't like the looks of them, so threw them under a tree. They came back every year. Now I don't think they're garlic. The bulbs are two to three inches across. I'm not a veggie gardener. Can you tell?