Indigofera decora

Indigofera decora, commonly known as summer wisteria, is a species of shrub native to China and Japan that has since been introduced to Australia and Sri Lanka. A member of the genus "Indigofera", its family is Fabaceae and is used primarily for decorative purposes, though it has also been used to make indigo-colored dye.
"I. decora" is a deciduous, spreading shrub. It often grows 1-2.5 feet tall and 3-4 feet wide. It features compound, pinnate leaves up to 8 inches long with 7-13 elliptic, dark green leaflets. In the summer, it produces axillary racemes of light pink or purple pea-like flowers. Each raceme may boast twenty to forty flowers, and the calyxes have broadly triangular lobes.
"I. decora" is best suited to well-drained, neutral to slightly alkaline soils. It is somewhat heat and drought tolerant, but benefits from afternoon shade in hot, humid environments. It is cold hardy in the US in zones 7-11.
Varieties.
There are three recognised varieties of "Indigofera decora":