Native to eastern Asia. This is a medium-sized tree that can grow to reach 30-50 feet tall at maturity. The crown is pyramidal in young trees, while becoming rounded with age, with branches angled upwards, and slender shoots.

The leaf arrangement is simple and alternate The leaves are broadly ovate with serrated margins that turn a showy yellow in the fall. Fruit ripens with the fall foliage in colors that can range from pink to red. Korean mountain-ash flowers in late spring, displaying umbrella shaped clusters of white flowers.

This tree grows best in well drained soils with full sun. Korean mountain-ash not recommended for planting in a streetscape, as it does not respond to well to urban stresses such as soil compaction and bark injuries. It is best planted against an evergreen backdrop to maximize the effect from the beautiful fall foliage.