The name “ninebark” derives from the peeling mature bark, which makes it look like there are multiple layers of bark on the plant. It is a very appealing winter effect. Ninebark is a rugged native plant that is very useful for cold, exposed landscapes. Summer Wine® combines the dramatic color of Diabolo® with the fine texture and compact branching of ‘Nana’. The compact habit makes it a good choice for residential landscapes. It has superior disease-resistance, including resistance to powdery mildew. It adds durable season-long color to landscapes, and can also be used as a cut flower. Physocarpus will tolerate clay soils, and extablished plants will also tolerate some drought.
Light: Thrives in full sun, which is 6 or more hours of direct exposure to the sun per day. It can grow in part sun, which is 4-6 hours of sun each day, or filtered light all day. It won’t be quite as robust or have the most colorful foliage.
Soil: Adaptable to most soil types and moisture levels. Thanks to its good disease resistance, it doesn’t get powdery mildew as easily in moist areas as other ninebarks.
Water: Average water needs. A layer of mulch helps keep the soil evenly moist, although it does well in both moist and dry conditions.
Fertilizing: If desired, fertilize in early spring using a granular (not liquid) fertilizer formulated for woody plants, like a rose fertilizer. One application a year is sufficient in most areas. However, if you are starting with a very small plant, you may wish to fertilize monthly through late July to encourage more rapid growth.
Pruning: Regular pruning is not necessary. If any shaping is desired, do so just after the plant has flowered in the spring. Be careful not to prune too much, as this may give the plant a strange habit. Periodic rejuvenation pruning is recommended. Every three to five years, remove a portion of the oldest, thickest branches all the way back to the ground. It’s best to do this process in the late winter before the plant breaks dormancy.
Physocarpus opulifolius 'Seward' PP#14,821, CBR#2641
3, 4, 5, 6, 7
|Season of Interest
Borders, Containers, Low Hedges, Mass Planting
Alkaline soil, Attracts pollinators, Clay soil, Cut flower, Disease resistant, Drought tolerant, Foliage interest, Native