KOREAN MOUNTAIN ASH - Sorbus alnifolia

KOREAN MOUNTAIN ASH Sorbus alnifolia

green Outstanding Features:
Excellent tree form. Attractive flowers and persistent fruit.

Description:
Height: 25-30'
Width: 20-25'
Hardiness Zone: 4a

Korean Mountain Ash is an excellent small tree. Tree form is oval broadening to round with age. It forms a fairly dense crown with many small branches. Unlike most Mountain Ash, the Korean Mountain Ash has simple leaves. Flowers are borne in loose clusters in mid May. Individual flowers are about 1/2" in size and are white. Fruits are also quite attractive and persist all winter. They are about 3/8" wide and 5/8" long. Fruit color is orange with a red-purple hue. Tends to flower and fruit heavily in alternate years. Bark of younger branches is very smooth, gray-brown in color with very conspicuous white lenticels. Leaves develop a clear, bright yellow fall color.

Requirements and Culture:
Korean Mountain Ash prefers a good loam soil and full sun for best performance.

Limitations:
Susceptible to fire blight. No serious insect pests if not grown under stress.
Sapsuckers occasional cause damage to the trunks.

Photo Credit: 1, 2, & 3 MLA.

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