Indigofera kirilowii

Indigofera kirilowii is a species of flowering plant in the family Fabaceae, native to eastern, central and northern China, the Korean Peninsula, and Kyushu island of Japan. A deciduous, suckering shrub typically 75 cm tall, it is hardy in USDA zones 5 through 7. The unimproved species and a whiteflowered "alba" selection are commercially available.