Greene's Mountain Ash
Sorbus scopulina
Also known as: Arizona Mountain Ash
Unknown author
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Rosaceae
- Genus:
- Sorbus
- Species:
- Sorbus scopulina
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Shrub , Tree
- Height:
- 20-40 ft
- Light Requirements:
- Full Sun, Part Shade, Shade
- Drought Tolerance:
- High
- Bloom Months:
- mar, apr, may, jun
- Bloom Colors:
- White
- Landscaping Shrub:
- Yes
Native Range
United States: Alaska, Arizona, California, Colorado, Idaho, Montana, North Dakota, New Mexico, Nevada, Oregon, South Dakota, Utah, Washington, Wyoming, Canada: Alberta, British Columbia, Northwest Territories, Saskatchewan, Yukon
Keystone Species Ranking
- Caterpillar Keystone:
- ★★☆☆☆ Based on number of butterfly and moth species using this genus as host plant (Source: National Wildlife Federation)
Reported Fauna Sightings
Soil Requirements
- Soil Type:
- rocky, well-drained loamy soil
- pH:
- 5.5 - 7.5 (slightly acidic to neutral)
- Drainage:
- excellent drainage required
- Moisture:
- dry to moderate
- Notes:
- prefers open, sunny locations in mountainous regions
Germination Information
Pre-treatment: Seeds are treated with 1,000 ppm gibberellic acid for 24 hours, followed by a 3:1 water/hydrogen peroxide soak for 10 minutes, and a 24 hour running water rinse. A 90 to 120 day cold, moist stratification is needed to break dormancy. Seeds are placed in fine mesh bags and buried in moistened peat moss in ventilated containers under refrigeration at 1 to 3C.
Establishment: There are variations in germination rates and times based on the age of the seeds. One-year-old seeds yielded a higher germination rate (61%) compared to a 3-year-old seed lot (25%). Germination time is also quicker for one-year-old seeds (20 days) compared to three-year-old seeds (21 days).
Source: npn.rngr.net