Crafters love it; foresters hate it. The woody vine of the Pennsylvania grape (Vitis L.) is one of our natives. Yes, it can be problematic as it grows into the canopy. But it also coexists, meaning it provides as well as takes, primarily by feeding the birds. The thick, meandering vines add interest to the drab winter scene. In summer, it entertains the kids who swing from the heartiest ones before splashing into the water. Be careful when clearing your wooded property; not all vines are foreign foes.