On a recent trip to Allerton Park, I found myself dancing on walnuts. It seems to be a good year for nuts. You can interpret that statement any way you like. In horticulture, we often complain about walnuts for their ability to keep other plants from growing around them. However, walnuts do provide a nut crop that is highly prized for its rich, distinct, somewhat tangy flavor. Black walnuts are from a common native tree unlike the English walnuts found in stores. The challenge is getting at...