Hoyt Arboretum, Portland, Oregon, USA

Common name: Korean mountain ash

Family: Rosaceae

Distribution: Japan & Korea

Habitat: Slopes of shady mountain forests of stone pine and deciduous trees on stony and humus rich soils. Slopes, gullies, mixed forests and shrubby thickets at elevations of 500 - 2400 meters.

IUCN Red list: Least concern

Hardiness: Zone 4b -25 to -20 F

Life form: Deciduous tree

Usage: Ornamental flowering tree

Comments: Korean mountain ash stands out as a durable small to mid-sized tree. Fall color of the leaves is a rich golden orange color, which highlights the irregularly shaped pink fruits. The fruits are persistent on the tree after leaf drop, which adds color to the garden as well as food for wildlife.
The coarse veining of the leaf and leaf shape is reminiscent of red alder leaves hence the specific epithet alnifolia. The genus Sorbus is wide spread in Northern hemisphere forests with species occurring throughout Asia, Europe and North America.