Butterfly Bush or as it is called scientifically Buddleia davidii can be grown in zones 6-8. What does that mean for those of you who are just beginning to grow your garden or just want to grow some bushes. Zones 6-9 is middle of the US to the South except the tip of Florida, also included is the mid west and California. The Butterfly Bush grows to 5-10’ tall and 6-8’ wide it needs all sun to grow. It is an excellent summer flowering shrub, flowers on new growth. It is a deciduous bush and has a rapid growth rate. The bush prefers moist, well-drained soil although will tolerate a range of soil types. The flowers are small and the color range from lavender, lilac, purple, white, yellow, or pink they bloom from summer to fall and are fragrant. The leaves are gray-green to blue-green and are 4-10” long with white tomentose beneath which emerges in late spring. This bush is drought tolerant, easy to transplant. Best flowers when plant is severely pruned in late winter, may have a problem with spider mites in a drought.
Butterfly Bush attracts these types of butterflies Monarch, Buckeye, black Swallowtail, Tiger Swallowtail, Pipevine Swallowtail, Snout Butterfly, Great Spangled, Fritillary, Pearl Crescent, Red Admiral, Painted Lady, Common Checkered-Skipper, Nymphalids.
Butterfly Bush sometimes gets confused with Butterfly weed they both attract butterflies and are perennials although they are unrelated. Make sure you deadhead your Butterfly Bush in your garden somehow it is considered an invasive bush in the Pacific Northwest US. The plant spreads by its seeds so if you can figure out a way to contain a way to minimizing the spread of the seeds you can contain the spread of the Bush. There are a few drawbacks to having this bush although with some care you can make sure you take care of them. This bush can have capsid bug, weevils, and mullein moth. This bush attracts also hummingbirds.