Mountain Ash (Korean)

Mountain Ash are beautiful trees, but most do not perform well in the landscape due to their susceptibility to borer and canker problems. Korean Mountain Ash, or sorbus alnifolia, however, is more pest-resistant than most other members of its genus. Korean Mountain Ash is not a true Ash tree (Mountain Ashes are actually in the rose family) and is therefore not susceptible to Emerald Ash Borer. Plant for the flower effect in late spring, the rich summer foliage, and the smooth, green-grey bark. Fall color is orange, yellow, and golden brown with fruit accompanying the fall foliage. Ornamental effects can be enhanced by planting against an evergreen background. Korean Mountain Ash needs moist, well-drained soils and full sun for best performance. It grows 40'-50' high and 30' wide with a habit that is pyramid to rounded.