As its name suggests, attraction butterfly bush (Buddleja davidii 'Attraction') is a magnet for nectar-loving insects. Growing 4.5 to 5 feet in height and breadth, this cultivar has incredibly fragrant, bright reddish-purple to magenta-colored blooms borne on long canes with attractive gray-green foliage.

Introduced by Michael Dirr from the University of Georgia Research Foundation, this quick-growing Buddleja blossoms from July to frost and grows quickly in moderately moist, well-drained soil with average fertility. Deadheading will help prolong the shrub's blooming season; cut the canes to the ground in late winter (all growth and flowering occurs on new canes). Butterfly bush is often a late starter in the garden, so remember to have patience if yours leafs out more slowly than your other perennials.