Native to (or naturalized in) Oregon:
- Deciduous shrub or small tree, 10-15 ft (3-4.5 m) high, upright, slender branches. Leaves alternate, simple, oblong to obovate, 3-8 cm long, about half as wide, acute and terminated in an abrupt tip, entire, or serrate on vigorous shoots, medium green above, whitish below. Flowers perfect, white, about 4 cm wide, 5-petaled, 3 stamens at the base of each petal; 6-10 flowers per cluster (raceme); flower buds roundish, "pearl-like". Fruit 5-valved, dehiscent, about 8 mm wide, yellow to brown.
Sun to light shade, best in moist, rich loams, good heat and drought tolerance when established, flowers arise on old growth, so prune as needed soon after flowering
- Hardy to USDA Zone 4 Native to northern China.