Hardhack spiraea, Rose spirea, Western spiraea
USDA Symbol: SPDO
USDA Native Status:
A many-stemmed, fast-growing, 4-10 ft. shrub. Oblong leaves are shiny green on top and white-woolly beneath. Tiny, rose-colored, five-petaled flowers occur in dense, 4-6 in. long panicles at the tips of the stems. The panicles appear fuzzy because of the flowers prominent, protruding stamens.
Hardhack is a member of the family Rosaceae, which includes about 2000 species of trees, shrubs, and herbs worldwide, including serviceberries (Amelanchier), hawthorns (Crataegus), apples (Malus), plums and cherries (Prunus), and mountain-ashes (Sorbus).
From the Image Gallery
Bloom InformationBloom Color: Pink
Bloom Time: Jun , Jul , Aug , Sep
DistributionUSA: AK , CA , CO , ID , MO , MT , OR , TN , WA
Native Distribution: B.C. to n.w. MT, s. to n. CA
Native Habitat: Low, damp places below 6000 ft.
Growing ConditionsWater Use: Low
Light Requirement: Part Shade
Soil Moisture: Moist
CaCO3 Tolerance: Low
Soil Description: Moist soils.
Conditions Comments: Not Available
BenefitWarning: Sometimes used medicinally, this plant can be poisonous in high quantities. Sensitivity to a toxin varies with a personís age, weight, physical condition, and individual susceptibility. Children are most vulnerable because of their curiosity and small size. Toxicity can vary in a plant according to season, the plantís different parts, and its stage of growth; and plants can absorb toxic substances, such as herbicides, pesticides, and pollutants from the water, air, and soil.
Conspicuous Flowers: yes
Value to Beneficial InsectsSpecial Value to Native Bees
This information was provided by the Pollinator Program at The Xerces Society for Invertebrate Conservation.
PropagationDescription: Propagate by seed or softwood cuttings. Offshoots from the creeping underground stems can be readily established.
Seed Collection: Not Available
Commercially Avail: yes
Find Seed or Plants
Find seed sources for this species at the Native Seed Network.
From the National Organizations DirectoryAccording to the species list provided by Affiliate Organizations, this plant is on display at the following locations:
Santa Barbara Botanic Garden - Santa Barbara, CA
Native Seed Network - Corvallis, OR
BibliographyBibref 841 - Native Alternatives to Invasive Plants (2006) Burrell, C. C.
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Recommended Species Lists
Find native plant species by state. Each list contains commercially available species suitable for gardens and planned landscapes. Once you have selected a collection, you can browse the collection or search within it using the combination search.View Recommended Species page
Additional resourcesUSDA: Find Spiraea douglasii in USDA Plants
FNA: Find Spiraea douglasii in the Flora of North America (if available)
Google: Search Google for Spiraea douglasii
MetadataRecord Modified: 2007-01-01
Research By: TWC Staff