Mountain Ninebark

Mountain ninebark is a compact, deciduous Rocky Mountain shrub with papery peeling bark, lobed leaves, and small clusters of white or pink-tinted flowers in May and June. Its modest scale suits grouped plantings and low hedges, while its natural mountain habitat makes it useful where a locally adapted western shrub is wanted. ## Form and seasonal interest The University of Wyoming profile describes dense branching, chocolate-colored inner bark, reddish fruit, and a mature size up to about 3 feet tall and wide. The Chicago Botanic Garden notes that plants may be larger in cultivation, describing a 4-foot height and 6-foot spread; growth form and size can vary with conditions. The flowers are followed by red follicles in early fall, and the plant is deciduous. See the [University of Wyoming profile](https://cwelwnp.usu.edu/westernnativeplants/plantlist_view.php?id=94&name=physocarpusmonogynus) and [Chicago Botanic Garden profile](https://www.chicagobotanic.org/plant-information/plant-finder/physocarpus-monogynus-mountain-ninebark). ## Site and landscape use Plant in full sun to part shade and well-drained soil. It tolerates a range of soil textures, including clay and rocky ground, and can withstand dry conditions once established. Use it in a mass, low hedge, native planting, or erosion-control planting; allow room for its naturally informal branching. ## Maintenance Remove dead stems in spring. Older stems can be cut to the ground to rejuvenate the shrub; if shaping is needed, prune after flowering. Provide moderate, regular water while plants establish.