Amorpha is indigenous in North and Central America. It comprises about 20 species, some of which are cultivated as ornamental shrubs.

This is a deciduous (sub-)shrub, sometimes woody-stemmed, with spreading, pinnate leaves consisting of a large number of pairs of small, oval leaflets and a terminal leaflet (which often hangs down at night), terminal, compact, clusters of white or violet-blue flowers, very popular with insects, and small pods. A. canescens, lead plant, grows 90-120 cm tall. It has hairy shoots and leaves, unstemmed, greyish-green pinnate leaves, 5-14 cm long, consisting of 15-45 oval leaflets, 1-2 cm long, and numerous short-stemmed clusters of flowers, 5-18 cm long.

A. fruticosa is a rambling shrub, 4-5 m tall, with virtually bare stems covered in downy hair, pinnate leaves up to 6 cm long, and clusters of indigo flowers, 9-18 cm long, with yellow stamens; it is suitable for (moist) sandy soil.

This rambling shrub requires a sunny or semi-shady spot, and well-drained or dry, infertile soil. Prune to keep the shrub under control. Propagate from seed (spring) and cuttings.

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