SelecTree: Tree Detail

KOREAN MOUNTAIN ASH
Sorbus alnifolia

Sorbus alnifolia Sorbus alnifolia Sorbus alnifolia Sorbus alnifolia Sorbus alnifolia Sorbus alnifolia Sorbus alnifolia Sorbus alnifolia Sorbus alnifolia Sorbus alnifolia Sorbus alnifolia Sorbus alnifolia Sorbus alnifolia Sorbus alnifolia Sorbus alnifolia

Photo Locations: Hoyt Arboretum - Portland, OR, The Morton Arboretum - Lisle, IL, Red Butte Garden - Salt Lake City, UT, The National Arboretum - Washington, DC and Arnold Arboretum - Boston, MA

General Notes

Messy fruit attracts birds.

Native to Japan, China, and Korea.

Family: Rosaceae

Tree Characteristics

Erect or Spreading and requires ample growing space.

Rounded Shape.

Has Deciduous foliage.

Height: 40 - 50 feet.

Width: 20 - 30 feet.

Growth Rate: 24 Inches per Year.

Longevity 50 to 150 years.

Leaves Elliptic to Ovate, Green, Golden or Yellow or Orange, Deciduous.

Flowers Showy. White. Flowers in Spring. Has perfect flowers (male and female parts in each flower).

Prolific, Red or Yellow Pome, Small (0.25 - 0.50 inches), fruiting in Winter or Summer.

Bark Dark Brown or Dark Gray, Smooth.

Shading Capacity Rated as Moderately Dense in Leaf.

Shading Capacity Rated as Moderate out of Leaf.

Litter Issue is Wet Fruit.

Tree Site Conditions & Constraints

Sunset Zones 1 - 10 and 14 - 17.

USDA Hardiness Zones 5 - 8.

Exposure Full Sun to Partial Shade.

Moist to Dry Soil.

Clay, Loam or Sand Texture.

Highly Acidic to Slightly Alkaline Soil pH.

Seaside Tolerance is Medium in Mild Zone.

Pests & Disease Information

Resistant to Verticillium. Susceptible to Beetle Borers, Canker, Fire Blight and Rust.

Health, Safety & Environmental Concerns

Branch Strength Rated as Medium.

Root Damage Potential Rated as Low.

None Known Health Hazard.

Desirable Wildlife Plant.

Attracts Birds and Bees.

Cite this tree:
SelecTree. "Sorbus alnifolia Tree Record." 1995-2021. Apr 12, 2021.
< https://selectree.calpoly.edu/tree-detail/sorbus-alnifolia >

This tree is not part of the SelecTree Nursery Connection. If you would like to see this tree listed, or know of a nursery that sells it, please contact us at ufei@calpoly.edu.