General Plant Information (Edit)
Plant Habit: Shrub
Tree
Sun Requirements: Full Sun
Full Sun to Partial Shade
Water Preferences: Mesic
Minimum cold hardiness: Zone 2 -45.6 °C (-50 °F) to -42.8 °C (-45°F)
Plant Height: 3 to 15 feet
Plant Spread: 5 to 10 feet
Leaves: Good fall color
Deciduous
Broadleaf
Fruit: Showy
Edible to birds
Fruiting Time: Late summer or early fall
Fall
Late fall or early winter
Flowers: Showy
Fragrant
Blooms on old wood
Flower Color: White
Flower Time: Late spring or early summer
Edible Parts: Fruit
Eating Methods: Raw
Cooked
Fermented
Wildlife Attractant: Bees
Birds
Butterflies
Propagation: Seeds: Stratify seeds: cool, moist about 3-4 months
Pollinators: Various insects
Miscellaneous: Monoecious

Image
Common names
  • Rocky Mountain Ash
  • Western Mountain Ash
  • Cascade Mountain-Ash
  • Greene's Mountain Ash

Photo Gallery
Location: Little Cottonwood Canyon, Salt Lake County, Utah, United States
Date: 2016-11-01
Location: Butler Fork, Big Cottonwood Canyon, Salt Lake County, Utah, United States
Date: 2017-06-05
Location: Washington State
Date: 5/8/17
Location: Washington State
Date: 5/8/17
Comments:
  • Posted by ILPARW (southeast Pennsylvania - Zone 6b) on Feb 14, 2019 12:34 PM concerning plant:
    This species is native to western North America from Alaska & the Yukon & western Northwest Territories down into the mountains of central California & Arizona & New Mexico on rocky hillsides, open woods, meadows, along streams, or infrequently in wetlands. It is usually a large shrub, but can be a low shrub or a small tree. Its pinnately compound leaves have 9 to 13 leaflets with leaflets 1 to 3 inches long. The foliage is shiny, light green, with deep veins, and sharp marginal teeth. The new growth and winter buds are white and sticky. The dense white flower clusters are slightly fragrant. The tart orange to scarlet fruit is edible raw if it has gone through a few frosts and can be used for jams and jellies and wine. It is offered by some native plant nurseries out West. It is a handsome woody plant like other Mountain-Ashes, but it is not common in cultivation.

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