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Ninebark ’Diabolo’ (Physocarpus opulifolius)

Names for this plant:

  • Scientific/Vitenskapelig Physocarpus opulifolius
  • English/Engelsk Ninebark
  • Norway/Norsk Rødbladet blærespirea
  • Sort: Diabolo

Physocarpus opulifolius, common names common ninebark, ninebark or Atlantic ninebark, is a species of flowering plant in the rose family Rosaceae, native to eastern North America.

It is a mound-shaped deciduous shrub with alternate, simple leaves, on arching stems. It has a height from 3–10 ft (1–3 m) and a spread of 4–6 ft (1–2 m). The leaves vary from 3–12 cm (1–5 in) in length, with palmately veined lobes. It is fast-growing, insect- and disease-resistant, and drought-tolerant.[5] The species is adaptable to a very wide range of soil and site conditions, from moist to dry, acid to alkaline, and gravelly to heavy clay; and can grow in partial shade to full sun. The 5-petaled flowers are 6–8 mm in diameter and form in corymbs. The flowers are white to pinkish, and bloom from May to June in North America. In Missouri the fruits ripen from August to early October and are small, dry pods hanging in drooping, papery clusters. The bark peels off in thin papery strips, resembling the number nine in shape, exposing brown inner bark which is the origin of the common name.