Annual/short-lived perennial. Deciduous. Important plant in Chinese therapy. Said to improve blood circulation, stimulate liver function, strengthens the immune & nervous systems, reduce blood sugar & cholesterol levels. Has Ginseng-like properties. Climbing plant. White flowers appear in summer, followed by black globose fruit. Grows up to 2 feet high a year. Exp. sun. Water: moist. USDA Z8.