Rosaceae

Western mountain ash

Sorbus sitchensis M.Roem.

Family: Rosaceae
Genus: Sorbus

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Western mountain ash (Sorbus sitchensis) — FruitPhoto: John Brew, CC BY-SA 4.0, from iNaturalist

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Common names

By language (1)

English: Western mountain ash, Sitka mountain ash, Sitka mountain-ash, Western mountain-ash

Synonyms

Pyrus sambucifolia Bong.
Pyrus sitchensis (M.Roem.) Piper
Sorbus occidentalis (S.Watson) Coville
Sorbus sitchensis subsp. sitchensis
Sorbus sitchensis var. sitchensis
Sorbus tilingii Gand.

Characteristics

Growth habit: Shrub, Tree
Lifespan: Perennial
In the US and Canada: Alaska: native, Canada: native, Lower 48 states: native

Photos

FruitPhoto: John Brew, CC BY-SA 4.0, from iNaturalist
Photo: Walter Siegmund, CC BY-SA 3.0, from Wikimedia Commons
Photo: Michelle Norcéide, CC BY 4.0, from iNaturalist
Photo: Walter Siegmund, CC BY 2.5, from Wikimedia Commons
Photo: Randal, CC0, from iNaturalist
Photo: Walter Siegmund, CC BY 2.5, from Wikimedia Commons
Photo: Walter Siegmund, CC BY 2.5, from Wikimedia Commons
Photo: Maddie Edmonds, CC BY 4.0, from iNaturalist
Photo: Walter Siegmund, CC BY 2.5, from Wikimedia Commons
Photo: David Anderson, CC BY 4.0, from iNaturalist
Photo: Walter Siegmund, CC BY-SA 3.0, from Wikimedia Commons
Photo: Yann Kemper, CC0, from iNaturalist

More in Sorbus

Sources: classification, synonyms from World Flora Online Plant List (2026-06, CC0 1.0); common names, popularity from Wikidata (2026-10-26, CC0 1.0); common names, US characteristics from USDA PLANTS Database (2025-05-29, CC0 1.0). About our plant data.