Chinese Wild Yam, Dioscorea opposita, is also known as Shan-yao and Cinnamon Yam, Chinese Wild Yam produces delicious underground and ariel tubers that double as nutrient rich tonic. Hardy in most areas of mainland Australia. White, cinnamon scented flowers compel you into the garden at dusk and dawn. A treatment for irritable bowel, bed-wetting and nerve pain. Chinese Wild Yamis native to China and Japan. Prefers rich, well drained soils in a partially shaded position. Some frost and drought tolerance. A deciduous, vining perennial, growing to 4m.