Folks - we were away for a week, and when we came back we noticed that some of our potato plants had fallen over. I picked one, and the potatoes looked fine. (They were very small, but I expect that is just because it is too early in their growing cycle.) Also, the stems have grown pretty long.These photos show that some of the bottom leaves are getting just a little yellow. This may be a tempest in a teapot, but is there anything going awry? Something that I can correct? Thanks as always. - Jim