Hello gardeners, I’m Amanda McNulty with Clemson Extension and Making It Grow . Every year, the natural resource management departments of most states conduct a mast survey. Mast is the fruit of trees in the forests that provides food for wildlife. Hard mast consists of acorns, hickory nuts, and walnuts -- soft mast includes the berries of dogwoods, blueberries and grapes. Acorns are the food most often thought of mast. White oak acorns are sweet and mature in one year; red oak acorns are higher