Asteraceae/Compositae (Aster/Composit Family) Synonym(s): Horseweed, Canadian Horseweed, Bitterweed, Hogweed, Squaw Weed, Colt's Tail Base Flower Color: WhiteReproductive Phenology: Jul, Aug, Sept, OctNotes: The leaves have a sharp flavor and an aromatic taste similar to tarragon. For more information about this plant, Click Here.