When I was in grade school and we would go to OKC for school we had several classes on TV. One of them was science. Dr Fishbeck (I think) had a contest one year for the longest sweet potato vine. I got 2nd place. Well this year I decided to grow one and see what I could get. I let the one sweet potato root over the winter and this summer I planted it in a big flower pot and today here is my crop. Not bad for a chance. Maybe next year I will plant 2.