Hello again! I have a couple of questions: 1) I read that once the soil piled up beside a potato trench has been used up in mounding, you should stop mounding. Why should I not mound beyond that point? 2) Is it a good idea to prune the lowermost leaves of the plant before mounding? I still have some virtually at soil level. Thanks as always. - JIm
Howard County Maryland
Hi- hilling up or mounding is important because the tubers form above the seed pieces. Additional hilling is only needed to make sure that the developing tubers are covered by soil to prevent greening of potato skin. Mounding up soil beyond that will not induce additional tubers. Mounding soil around the stem should not require pruning lower leaves but pruning some leaves will not affect plant growth or yield:
You are welcome.