Plums, cherries, apricots, peaches...we call these stone fruits because of the hard pit in the center that holds the seed. The University of Minnesota has developed quite a few varieties over the years, and they are quite miraculous if we do say so ourselves. They're some of the easiest trees to grow. In fact, if you're not growing a tart cherry tree go out and plant one right now! You won't be sorry. Read on to see what's happening in the world of stone fruits.