Native to China and Japan, these unique vines are prized for their ornamental value and nutritious tubers, which are eaten oiled, steamed or mashed like potatoes. Hardy perennials, they die back in the winter and return in the spring. Cinnamon Vine grows to about 8-10 ft. in height and can be grown where temperatures fall to minus 25°F. In areas with very warm summers, Cinnamon Vine can spread quickly.