This old-friend thalictrum is a Japanese native, but there are American species, too, such as the charming little rue anemone, Thalictrum thalictroides, with white blooms in spring near the woodland floor.My summertime companion, though, produces lavish lavender 3-foot-wide sprays of tiny flowers, each with showy yellow stamens, on 10-foot stems that are painted appropriately purple (below) and dressed up with delicate, blue-green foliage that