The Butterfly Bush does exactly what you would guess by it's name, attracts butterflies. It also attracts Hummingbirds. This is your grandparents Butterfly Bush, it has been around forever! The flowers on this perennial are elongated purple blossoms, nearly the same color as a Lilac. The Butterfly Bush will bloom in summer and continue blooming well into fall. In the midwest, cut it back to the ground in the fall or spring to keep it compact. Use as a landscape plant or windbreak filler. The Butterfly Bush is a perennial; it will grow and bloom each year.