I bought this last fall....now I can't find my notes telling me *why* I bought it. Typical, eh? All I know is that it is a Chinese medicinal. Distribution is throughout China, as well as Cambodia, India, Japan, Korea, Philippines and, Sri Lanka. I *think* it wants damp soil. Have no clue as to sun requirement....I kept it in high shade over the winter. Anybody tell me anything about it? I don't know how big it gets, bloom, etc. Leaves are so-so. Catharine/Atlanta, zone 7b who will one day immediately record all plant purchases she makes with complete notes. (in my dreams)