Butterfly bush (Buddleja) is a large shrub that produces masses of flowers in midsummer to fall. Flower colors include blue, pink, red, violet, yellow, and white, and are a huge attractant for butterflies. Butterfly bush grows 5 to 10 feet tall and wide, depending on the variety. Butterfly bushes grow well in shrub or perennial borders, the fragrant flowers can be used for cutting.
Plant butterfly bushes in spring or fall, in full sun, spacing plants 5 to 10 feet apart. Be sure to loosen the soil, then mix in a 2- to 4-inch layer of compost. Dig a hole twice the diameter of the pot the plant is in. Carefully remove from its container and place it in the hole then fill in around the rootball.firm the soil around the butterfly bush then water thoroughly.
Flowers are produced on new wood, so be sure to prune back old growth almost to the ground early each spring before any new growth emerges. They are hardy to zone 4.
Look for butterfly bushes at your favorite local garden center or by ordering on line at http://www.naturehills.com/.