description Physocarpus opulifolius Overview
Physocarpus opulifolius, commonly called common ninebark, is a deciduous shrub native to eastern and central North America. It is distinguished by arching branches, clusters of small white or pinkish flowers, and mature bark that peels away in thin layers. Adaptable to varied soils and moisture conditions, it is used in native plantings, borders, hedges, erosion-control projects, and landscapes intended to support wildlife.
insights Ranking position
Physocarpus opulifolius ranks #65 of 535 in the Shrub ranking, behind Banksia integrifolia, ahead of Thuja occidentalis.
help Physocarpus opulifolius FAQ
Why is Physocarpus opulifolius called 'ninebark'?
The common name refers to the way mature bark peels away in thin, papery layers to reveal multiple layers of underlying bark, often described as nine distinct layers. This exfoliating bark habit is most visible on older stems and provides notable winter interest in the landscape.
What are the most popular ninebark cultivars?
The cultivar 'Diabolo,' developed in Germany, features deep burgundy-purple foliage and became one of the most widely planted selections in North American gardens. Other popular varieties include 'Summer Wine,' a more compact plant with finely dissected leaves, and 'Little Devil,' a dwarf form reaching only about three to four feet tall.
Is common ninebark native to North America?
Yes, Physocarpus opulifolius is native to eastern and central North America, ranging from Quebec down through the eastern United States and west to the Dakotas. It naturally occurs along stream banks, rocky slopes, and in open woodland margins.
How should you prune ninebark?
Ninebark tolerates heavy rejuvenation pruning and can be cut back nearly to ground level in late winter or early spring to encourage compact new growth. Because it flowers on old wood, aggressive pruning will reduce the display of white to pinkish flower clusters but will produce denser, more vibrant foliage.
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