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American Mountain Ash

Sorbus americana

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American Mountain Ash (Sorbus americana) at Arrowhead Nurseries Ltd.

American Mountain Ash in fall

American Mountain Ash in fall

(Photo courtesy of NetPS Plant Finder)

American Mountain Ash (Sorbus americana) at Arrowhead Nurseries Ltd.

American Mountain Ash fruit

American Mountain Ash fruit

(Photo courtesy of NetPS Plant Finder)

American Mountain Ash (Sorbus americana) at Arrowhead Nurseries Ltd.

American Mountain Ash in bloom

American Mountain Ash in bloom

(Photo courtesy of NetPS Plant Finder)

Height:  25 feet

Spread:  20 feet

Sunlight:  full sun 

Hardiness Zone:  2a

Description:

A truly four-season accent tree with showy clusters of white flowers in spring followed by bright red berries lasting into winter; steel gray bark, attractive compound leaves turn fiery orange and red in fall; needs well drained soil

Ornamental Features

American Mountain Ash features showy clusters of white flowers held atop the branches in mid spring. The red fruits are held in abundance in spectacular clusters from early to late fall. It has dark green foliage throughout the season. The oval compound leaves turn an outstanding scarlet in the fall. The smooth silver bark adds an interesting dimension to the landscape.

Landscape Attributes

American Mountain Ash is a multi-stemmed deciduous tree with a shapely oval form. Its relatively fine texture sets it apart from other landscape plants with less refined foliage.

This is a relatively low maintenance tree, and is best pruned in late winter once the threat of extreme cold has passed. It is a good choice for attracting birds to your yard. Gardeners should be aware of the following characteristic(s) that may warrant special consideration;

  • Disease

American Mountain Ash is recommended for the following landscape applications;

  • Accent
  • Shade

Planting & Growing

American Mountain Ash will grow to be about 25 feet tall at maturity, with a spread of 20 feet. It has a low canopy with a typical clearance of 3 feet from the ground, and is suitable for planting under power lines. It grows at a medium rate, and under ideal conditions can be expected to live for 40 years or more.

This tree should only be grown in full sunlight. It is very adaptable to both dry and moist locations, and should do just fine under average home landscape conditions. It is not particular as to soil type or pH. It is highly tolerant of urban pollution and will even thrive in inner city environments. This species is native to parts of North America.

 
 
Hardiness Zone Plant Height Minimum Sunlight
Characteristics
Accent  Shade 
Applications
Flowers  Fruit  Fall Color  Bark  Winter Value  Attracts Wildlife 
Ornamental Features