About Bistorta vacciniifolia (Wall. ex Meisn.) Greene
Bistorta vacciniifolia, commonly known as whortleberry-leaved knotweed, is a flowering plant species belonging to the family Polygonaceae. It is native to Tibet and the Himalaya. This species grows well in clay soils. It has received the Royal Horticultural Society's Award of Garden Merit under its synonym Persicaria vacciniifolia.