Physocarpus opulifolius — Ninebark
Ninebark is an upright, spreading, somewhat coarse, deciduous, Missouri-native shrub which is closely related to genus Spiraea. It typically occurs along streams, rocky banks, gravel bars and in moist thickets, especially in counties south of the Missouri River. Grows 5-8' tall (less frequently to 10'). Noted for its exfoliating bark (on mature branches) which peels in strips to reveal several layers of reddish to light brown inner bark (hence the common name of ninebark). Bark provides winter interest, but is usually hidden by the foliage during the growing season. Features small pink or white, five-petaled flowers appearing in dense, flat, rounded, 1-2" diameter, spirea-like clusters (corymbs) in late spring. The striking purple leaf color is maintained year-round.
Come check out the striking Ninebark in the garden today! Find it in the Evelyn A. Veach Atrium Garden near the west (24th street) entrance.