Spiraea douglasii (Western Spirea)
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Plant Description: A many stemmed, fast growing, rhizomatous deciduous shrub. It has shiny green leaves that are oval and toothed toward the tip and white-woolly beneath. Western spirea’s small pink to rose colored flowers are fragrant and grouped together to make a rounded spike like inflorescence (panicle) appearing fuzzy due to the long stamen in the individual flowers.
- Height: 3-6.5ft
- Width: 3-6.5ft
- Watering needs: regular,
- Sun needs: full sun to part shade
- Soil needs: well-draining, moist to wet soil
- Bloom Time: between June and September
- Portland Plant List (Backyard Habitat Certification): Yes
Landscape Use and Ecological Function: This native plant is found mainly in riparian habitats such as streambanks, bogs and wetlands, as well as in moist coniferous forests up to 6500 ft. We recommend planting in rain and woodland gardens as well as in meadowscapes. Great for attracting pollinators and birds.
It is tolerant of permanently waterlogged soils and seasonal flooding, although it can also be somewhat drought tolerant if grown in semi shade. Spiraea douglasii can be aggressive, forming dense impenetrable thickets in riparian areas.
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