Asteraceae/Compositae (Aster/Composit Family) Synonym(s): Wild Ageratum, Blue Boneset Base Flower Color: BlueReproductive Phenology: Jun, Jul, Aug, Sept, Oct, NovNotes: Blue Mistflower attracts bees and butterflies. However, this wildflower spreads quickly and can become a pest. For more information about this plant, Click Here. Similar Species: Pink Thoroughwort (Fleischmannia incarnata (Walter) King & H. Rob.)