Virginia Tech Dendrology

Korean mountain-ash Rosaceae Sorbus alnifolia (Siebold & Zucc.) K. Koch symbol: SOAL9
Leaf: Alternate, simple, 2-4 inches, broadly ovate, serrate margin, generally glossy dark green above, paler and may be finely pubescent below, turning showy yellow in the fall.
Flower: Species is monoecious; showy 2-3 inch umbrella-shaped clusters of 5-petal white flowers, appearing in late spring to early summer..
Fruit: Clusters of purple-red to orange-red 1/2 inch pomes, very showy, ripening in fall, persisting into winter.
Twig: Slender, reddish brown to gray-brown, reddish brown scaly long-pointed buds.
Bark: Very attractive, smooth gray-brown, with white or purple markings, diamond-shaped lenticels obvious on young bark.
Form: A small or medium sized tree with a spreading, broadly rounded crown.

Additional Range Information: Sorbus alnifolia is planted in the USDA hardiness zones shown above and is not known to widely escape cultivaton. Download the full-size PDF map.
More Information: Fall Color
External Links: USDA Plants Database - Horticulture Information
All material 2021 Virginia Tech Dept. of Forest Resources and Environmental Conservation; Photos and text by: John Seiler, Edward Jensen, Alex Niemiera, and John Peterson; Silvics reprinted from Ag Handbook 654; range map source information