Rosaceae
Spiraea douglasii var. douglasii
Spiraea douglasii var. douglasii var. douglasii
Also known as Spiraea douglasii f. pseudosalicifolia, Spiraea douglasii var. pachystachys, Spiraea douglasii f. alba
Flowering Plants · Native Plants · Trees & Shrubs · Spiraea · Native Shrub · Pacific Northwest · Pink Flowers · Deciduous · Streamside · Pollinator · Erosion Control · Rosaceae · Perennial Shrub
Douglas spiraea is a vigorous, deciduous shrub native to the Pacific Northwest that produces showy pink to rose-purple plumes in summer and thrives in moist, partly shaded sites. It spreads by rhizomes and can form attractive thickets, making it ideal for erosion control along stream banks or in rain gardens. Little pruning is needed beyond occasional thinning to keep it tidy.
Growing conditions
The details behind the basics
- Daily light
- 5 hours
- Watering
- Water thoroughly until soil is evenly moist, tolerates periodic wet conditions near streams · Every 7-10 days
- Maintenance
- Low
- Soil
- loam
- Soil pH
- 5.5–7.5
- Temperature
- -30°F to 85°F
- Cycle
- Perennial
Hardiness
USDA 4a-9b
Form & growth
Mature size and habit
- Mature height
- 3 ft – 5 ft
- Spread
- 4 ft
- Spacing
- 48 in apart
- Growth rate
- Moderate
- Root depth
- Medium
- Flowers
- Purple
- Foliage
- Green · Coarse
Ecology & origin
Where it belongs and what it brings
- Native to
- Argentina South, Belgium, British Columbia, Bulgaria, California, France, Illinois, Oregon, Washington
- Attracts
- Bees, Butterflies, Birds
Sources: trefle, usda
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