Amorpha fruticosa (False Indigo Bush)

Amorpha fruticosa, called the false indigo bush, is a native leguminous shrub found widely across the central and eastern United States, particularly along riverbanks and floodplains. Its feathery leaves have dramatic spires of small, fragrant purple flowers tipped with bright yellow stamens, almost tropical in appearance. These flowers bloom around late spring and are highly attractive to native bees, butterflies, and other pollinators including hummingbirds.

The plant’s loose, airy form and adaptability to tough conditions make it useful in both gardens and wild plantings. The stems are easy to root in moist soils and sands, and it is often used as "live stakes" for stabilizing stream banks and other riparian zones. It also grows well in dry to average soils if given enough time to establish its deep roots.

A member of the pea family, Amorpha fruticosa is a nitrogen fixer, enriching the soil through symbiosis with rhizobium bacteria in its root nodules. Dense thickets of this shrubby plant offer cover for birds and small mammals, while its seeds are eaten by upland game birds such as quail.

False indigo bush also serves as a host plant for many moth and butterfly species, including the clouded sulphur, gray hairstreak, hoary edge, Io moth, marine blue, silver-spotted skipper, and southern dogface.

This species makes a wonderful shrub in pollinator gardens, bird habitats, and average gardens.