Physocarpus opulifolius – Nine Bark (eastern North America)
Habit: Broadly round normal shrub, 3-(4) m tall and wide, twigs overhanging; bark peeling in patches; medium to fast-growing.
Flowers: Decorative, ball-shaped umbels, white whitish pink, (May) June to July.
Fruits: Red-brown, somewhat inflated small capsules.
Leaves: 3 to 5-lobed, medium green; green to golden yellow in autumn, end of October to November.
Demands: Not demanding, adaptable, sun to shade, frost hardy, tolerant of urban pollution, wind resistant.
Soil: Any garden soil.
Hardiness: Zone 4