Tee, I think that's also Boniatos, or what they call Cuban sweet potato in the grocery store. I wonder if you cut an "eye" off the tuber, if it will produce another plant. I usually toss my sweet potato vines each winter. I've never had success wintering them over. They turn to mush from overwatering, I think. After seeing your huge tuber, I'll look for mine next winter before putting things away.
Love the avocado tree. I think we've all grown one on the window sill, and then thought...now what? I wish we could grow them here also. We had a huge tree in Hawaii. I'm sure someone planted a seed years ago before they left the island. I wonder if they ever came back to see how large it had become?
