This is a potato plant, right? Only guessing that because of the giant potato it appears to be growing out of but I have no clue Found it growing in the compost pile, which I evidently haven't checked in a while, and thought it was pretty cool. If it IS a potato, do I need to do anything to it? It looks really healthy, besides some holes. And how will I know when the potatoes are ready? If it is NOT a potato plant, what is it?