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Loughmiller, Campbell and Lynn
Spiraea douglasii Hook.
Hardhack spiraea, Rose spirea, Western spiraea
USDA Symbol: SPDO
USDA Native Status: Native to U.S.
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).
Plant CharacteristicsDuration: Perennial Habit: Shrub Leaf:
Dark Green Fruit: Size Class:
Bloom InformationBloom Color: Pink
Bloom Time: Jun , Jul , Aug , Sep
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. USDA Native Status: L48(N), AK(N), CAN(N)
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
PropagationDescription: Propagate by seed or softwood cuttings. Offshoots from the creeping underground stems can be readily established.
Seed Collection: Not Available
Commercially Avail: yes
From the National Organizations Directory
According to the species list provided by Affiliate Organizations, this plant is either on display or available from the following:
Santa Barbara Botanic Garden
- Santa Barbara, CANative Seed Network
- Corvallis, OR
Recommended Species Lists
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Record Modified: 2007-01-01
Research By: TWC Staff