Good to know Sandy, but I usually get new seed potatoes each year. I've found that the ones I save work for another year, but after that they haven't been so good. Don't know why that is, but it's happened a few times now, so I don't save them any more. The last time I used them I had gotten new ones and had room for 6 more hills, so I used 6 of my left over ones, They were in the same row, and got the same treatment, and were the same cultivar. The 6 turned out having really small and poor quality potatoes, while all the others were great. I can't explain it, it shouldn't do that.
