Decodon verticillatus, Water willow, is a perennial herb with a woody base at the bottom of its arching leafy stems. Decodon verticillatus is often found on the edges of standing water, lazy streams or marshy swamps. Growing from the stalks are dense clusters of showy pink/purple bell shaped flowers which bloom from July to September. Fall brings deep red and orange color to leaves. The Water willow will actually send roots from its tips when submerged in water and seeds are enjoyed by water fowl.