Sorbus poteriifolia
Common name: 
Mountain Ash
Pronunciation: 
SOR-bus pot-er-ee-ih-FOH-lee-a
Family: 
Rosaceae
Genus: 
Type: 
Broadleaf
Native to (or naturalized in) Oregon: 
No
  • Deciduous, usually a small shrub, but 30 inches to 9 ft (0.1-2.7 m) tall.   Leaves alternate, compound, pinnate, 4-6(-9) leaflet pairs, elliptic or oblong-elliptic, 1-2 cm × 0.6-0.9 cm, dark green above, apex acute to obtuse, base rounded, margin sharply serrate; leaves yellow/red in fall.  Flower in loose clusters, white to pinkish, 7 mm diam.  Fruit globose, white to pink, 7 mm diam.
  • Sun to part shade. Best in moist peaty soil. Reportedly difficult to cultivate.
  • Hardy to USDA Zone 3       Native to stony slopes, forming low shrubby thickets in high mountain areas; 3000--4000 m, China (NW Yunnan) and northern Myanmar.  Introduced into the West in 1926 by Kingdom Wade and again in 1951 (Hillier, 1998).
  • poteriifolia: with leaves like Poterium, which are pinnately compound and have toothed leaflets
Click image to enlarge
  • plant habit

    plant habit

  • leaves

    leaves