Dense, suckering shrub or subshrub which typically grows to 4-5' tall. Features dense, axillary racemes of pink, pea-like flowers which bloom heavily in June and July and sometimes continue intermittently to September. Compound pinnate leaves (each with 7-11 rounded leaflets) are bright green and 4-6" long. Grow in average, medium wet, well-drained soil in full sun. Tolerates alkaline soils and some drought. Intolerant of the hot and humid summers of the deep South. Plants may suffer some tip damage or die to the ground in harsh winters, but should come back nicely. Often grown in the manner of an herbaceous perennial in USDA Zones 5 and 6A by cutting back all stems close to the ground in late winter to early spring each year before new growth appears. Also often needs a similar hard pruning in warmer climates to maintain good form. Blooms on new growth.