We are growing harvest moon potatoes for the first time and would like some advice about what we are seeing. In the beginning, just after we planted, they seemed to grow like mad. For the last few weeks they have slowed way down and the majority of the leaves are just near the top of the plant. Also, you can see the leaves appear to be stunted, some are brown on the tips and some have holes. We live very near the St. Paul campus so we have had plenty of moisture. So far, we have not done any fertilizer doing, we would like to get your advice about the best strategy. Thanks much, Owen