Knotweed is used traditionally in Asia and China as herbal medicine. Knotweed belongs to Polygonaeceae family (Buckwheat). Japanese Knotweed, one of the species from Knotweed family is edible herb. Japanese Knotweed is cooked and used as substitute for asparagus. Japanese Knotweed seeds are dried and added to soups as thickening agent. The powder of seeds [...]