Thriving in the South's wetland environments and produce small, tart-to-tasteless, berry-sized fruits that range in hue from yellow to red. In the wild, mayhaw berries look very much like cranberries or small crabapples. They vary in taste, but the berries are usually fruity and tart. Most would say they're far too tart to eat straight from the tree-and that's where the jelly comes in.