Trees

Mountainash, American Sorbus americana

This small native tree's dark green leaves turn orange and purple in the fall. Showy white spring flowers, followed by flame-red fruit loved by birds. Likes acidic soil with good drainage, full sun to light shade. Grows to 10' to 30'.

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Zones 2 - 5
Zones 2 - 5

Hardiness Zones: Zones 2 - 5
The American Mountainash can be expected to grow in the zones shown in color in the arborday.org zone map. VIEW MAP

Flowering Tree
Flowering Tree

Type of tree:
The American Mountainash falls into the following type(s): Flowering Trees, Ornamental Trees

10' - 30' High
10' - 30' High

Mature Height:
The American Mountainash grows to be 10' - 30' feet in height.

15' Spread
15' Spread

Mature Spread:
The American Mountainash has a spread of about 15' at full maturity.

Slow Growth
Slow Growth

Growth Rate:
This tree grows at a slow growth rate. [More about this.]

Full Sun
Full Sun

Sun:
This mountainash does well in full sun, partial shade.

Various Soils
Various Soils

Soil:
The American Mountainash grows in acidic, loamy, sandy, well drained, wet, clay soils.

Oval Shape
Oval Shape

Shape:
This mountainash has oval shape.

More Info
More Info

Attributes:
Spectacular fall foliage. The fruit provides winter food for birds.

Description:
This small native tree's dark green leaves turn orange and purple in the fall. Showy white spring flowers, followed by flame-red fruit loved by birds. Likes acidic soil with good drainage, full sun to light shade. Grows to 10' to 30'.

Wildlife Value:
The American Mountain Ash is an important source of food for many small birds and mammals including catbirds, thrushes, and waxwings. Fruits persist through winter.

History/Lore/Use:
First cultivated in 1811. The Mountain Ash is a northern tree that is a true plastic taxon inasmuch as it will interbreed with other families of trees and plants including the great rose family. The fruit has been known to intoxicate birds. Also known as the Rowantree because it resembles the European Rowantree. The bark was used as a anti-malarial medicine by pioneer doctors because of its close resemblance to the Quininetree. It was also believed to be powerful in exorcising witches by the early settlers and was known as Witchwood.

Moisture:
Well drained

Leaves:
This tree has dark green leaves, turning orange and purple in the fall

Flower Color:
White flowers

Bloom Time:
Spring.

Fruit Description:
This tree has flame-red fruit