Korean mountain-ash is a medium sized tree with interesting ornamental features. The tree flowers white in spring and the white flowers are followed by red fruit. Yellow fall color and gray bark complete the picture. This tree does best in a lawn situation. Streets and city sites should be avoided.
All Common Names:
Tree or Plant Type:
- Deciduous (seasonally loses leaves)
- Shade tree
- Large tree (more than 40 feet)
- Full sun (6 hrs direct light daily)
- Zone 4,
- Zone 5 (Chicago),
- Zone 6,
- Zone 7
- Moist, well-drained soil
Season of Interest:
- Mid spring,
- Late spring,
- Mid summer,
- Late summer,
- Early fall,
- Mid fall
Flower Color & Fragrance:
Shape or Form:
40 to 50 feet high and 20 to 30 feet wide.
Tree & Plant Care
Generally a short-lived tree.
Avoid polluted and dry sites.
Disease, pests, and problems
Fireblight, canker, rust, scale insects and borers.
May be difficult to find in nurseries.
Native geographic location and habitat
Korea, Japan and China
Bark color and texture
Bark is smooth and gray.
Leaf or needle arrangement, size, shape, and texture
Simple leaf (unusual as most mountain-ash species have compound leaves); alternate on the twig; oval with unequal teeth around the edges.
Fall color is mix or yellow, orange and brown.
Flower arrangement, shape, and size
Small, white flowers in a flat-topped cluster, 2 to 3 inches in diameter.
Fruit, cone, nut, and seed descriptions
Red, berry-like pomes in clusters, late summer into fall.