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Sorbus scopulina (Cascade mountain-ash)
Weyand, Phyllis

Sorbus scopulina Greene

Cascade mountain-ash, Greene's mountain ash, Western mountain-ash

Rosaceae (Rose Family)

USDA Symbol: SOSC2

USDA Native Status: Native to U.S.

Cascade mountain-ash is a shrub or shrub-like tree with several erect stems to 3-12 ft. Bark is reddish. Deciduous leaves are pinnately compound with 11-15 shiny, oblong leaflets. Small, white flowers occur in large terminal clusters and are followed by persistent, red-orange berries. A shrub forming dense clumps, or rarely a small tree, with many small white flowers and small, applelike fruit.

This shrubby species takes the form of a small tree in southeastern Alaska. The common name honors Edward Lee Greene (1843-1915), the United States botanist who prepared the description. Birds and mammals eat the fruit.

 

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Plant Characteristics

Duration: Perennial
Habit: Shrub
Leaf: Green
Autumn Foliage: yes
Fruit:
Size Class: 12-36 ft.

Bloom Information

Bloom Color: White
Bloom Time: Jun

Distribution

USA: AK , CA , CO , ID , MT , ND , NM , NV , OR , SD , UT , WA , WY
Canada: AB , BC
Native Distribution: W. Alt. to AK, s. to NM, UT & Tulare Co., CA; also Black Hills
Native Habitat: Canyons; wooded slopes; stream banks; 4000-9000 ft.
USDA Native Status: L48(N), AK(N), CAN(N)

Growing Conditions

Water Use: Medium
Light Requirement: Sun , Part Shade , Shade
Soil Moisture: Moist
CaCO3 Tolerance: Low
Soil Description: Rich soils.
Conditions Comments: Not Available

Benefit

Use Wildlife: Grouse, cedar waxwings, and grosbeaks consume the berries.
Conspicuous Flowers: yes
Fragrant Flowers: yes

Find Seed or Plants

Find seed sources for this species at the Native Seed Network.

View propagation protocol from Native Plants Network.

From the National Organizations Directory

According to the species list provided by Affiliate Organizations, this plant is either on display or available from the following:

Native Seed Network - Corvallis, OR

Bibliography

Bibref 841 - Native Alternatives to Invasive Plants (2006) Burrell, C. C.

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Recommended Species Lists

Find native plant species by state. Each list contains commercially available species suitable for gardens and planned landscapes. Once you have selected a collection, you can browse the collection or search within it using the combination search.

View Recommended Species page

Additional resources

USDA: Find Sorbus scopulina in USDA Plants
FNA: Find Sorbus scopulina in the Flora of North America (if available)
Google: Search Google for Sorbus scopulina

Metadata

Record Modified: 2007-07-01
Research By: TWC Staff

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