General Plant Information (Edit)
Plant Habit: Shrub
Life cycle: Perennial
Sun Requirements: Full Sun
Full Sun to Partial Shade
Partial or Dappled Shade
Water Preferences: Mesic
Dry Mesic
Dry
Soil pH Preferences: Slightly acid (6.1 – 6.5)
Neutral (6.6 – 7.3)
Slightly alkaline (7.4 – 7.8)
Minimum cold hardiness: Zone 3 -40 °C (-40 °F) to -37.2 °C (-35)
Maximum recommended zone: Zone 7b
Plant Height: 1 to 7 feet
Plant Spread: to 5 feet
Leaves: Deciduous
Fruit: Dehiscent
Fruiting Time: Late summer or early fall
Flowers: Showy
Blooms on new wood
Other: raceme-like inflorescence; faded flowers persist into winter giving the plant a shaggy appearance.
Flower Color: White
Bloom Size: Under 1"
Flower Time: Late spring or early summer
Summer
Suitable Locations: Xeriscapic
Uses: Windbreak or Hedge
Wildlife Attractant: Bees
Butterflies
Resistances: Drought tolerant
Propagation: Seeds: Stratify seeds: +18 weeks of cold wet stratification
Suitable for wintersowing
Sow in situ
Other info: Approximately 5M seeds/lb; low seed viability (less than 10%); seedlings develop slowly. Very small seed size, long cold & wet stratification requirements, and low seed viability suggest broadcast-seeding and/or wintersowing maybe ideal.
Propagation: Other methods: Cuttings: Cane
Layering
Other: softwood or hardwood cuttings
Pollinators: Various insects
Miscellaneous: Tolerates poor soil
Monoecious
Conservation status: Least Concern (LC)

Conservation status:
Conservation status: Least Concern
Image
Common names
  • Mountain Spray
  • Rock Spiraea
  • Cliff Spiraea
  • Bush Rockspirea
  • Glandular Oceanspray

Photo Gallery
Location: Elko County, NV
Date: 2013-07-04
in the sagebrush/pinyon-juniper transition zone.
Location: Butterfield Canyon, Salt Lake County, Utah, United States
Date: 2023-07-05
Location: Big Cottonwood Canyon, Salt Lake County, Utah, United States
Date: 2017-06-05
Location: Butterfield Canyon, Salt Lake County, Utah, United States
Date: 2022-08-31
Location: Butterfield Canyon, Salt Lake County, Utah, United States
Date: 2022-08-31
Location: Butterfield Canyon, Salt Lake County, Utah, United States
Date: 2022-08-31
Empty seed head.
Location: Butterfield Canyon, Salt Lake County, Utah, United States
Date: 2022-08-31
Location: Butterfield Canyon, Salt Lake County, Utah, United States
Date: 2023-07-05
Location: Butterfield Canyon, Salt Lake County, Utah, United States
Date: 2022-09-11

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