This endangered east coast woodland plant is the food of choice for the endemic pipevine swallowtail butterfly. The aromatic root was traditionally used as a low dose botanical for the treatment of snakebites, fever and headaches. As this plant species nears extinction in the wild due to loss of habitat, it is feasible to establish plantings in our backyard woodland gardens. Prefers a well drained soil with plenty of moisture and dappled shade. A delicate and rare specimen for the woodland garden. Perennial. Hardy to zone 4.