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Picture Common name Scientific name Height Color Flowering Period Light Requirement Moisture Requirement Description
Thin leaf alder - Alnus incana Thin leaf alder Alnus incana 6-15’ spring
Deciduous, multi-stemmed shrub or small tree found in riparian areas of eastern Cascades.
Redosier dogwood - Cornus sericea Redosier dogwood Cornus sericea 4-20’ white June-August
Deciduous shrub. Red to purple bark and twigs provide beautiful winter landscape. White berries provide fall and winter food source for wildlife. Prefers seasonally moist areas.
Oceanspray - Holodiscus discolor Oceanspray Holodiscus discolor 6-20’ white May-July
Deciduous shrub with arching multi-branched, reddish gray bark. Flowers drooping on 4-7” clusters. Red fall foliage.
Twinberry - Lonicera  involucrata Twinberry Lonicera involucrata <9’ yellow summer
Erect, deciduous shrub. Tubular flowers in pairs. Black ‘twin’ berries not edible.
Mockorange - Philadelphus  lewisii Mockorange Philadelphus lewisii 3-10’ white late May to early July
Erect, deciduous, spreading shrub. Showy white flowers are fragrant and occur in clusters of 3 to 15. Useful to plant in drier areas of riparian zones.
Pacific ninebark - Physocarpus  capitatus Pacific ninebark Physocarpus capitatus 6-12’ white April - July
Erect, deciduous, spreading shrub with peeling bark. Maple-leaved foliage turns Reddish brown in fall. Rounded clusters of creamy white flowers.
Stinky currant - Ribes  hudsonianum Stinky currant Ribes hudsonianum <5’ white May - July
Erect deciduous shrub. Flowers growing on up to 6” stalks in clusters of 6-15.
Prickly currant - Ribes  lacustre Prickly currant Ribes lacustre 3-4’ white May-June
Deciduous shrub with prickly stems. Bell-shaped flowers occur in drooping cluster of 5-15.
Golden currant - Ribes aureum Golden currant Ribes aureum 3-9’ yellow April - June
Fragrant tubular flowers occur in drooping clusters of 5-10. Yellow to red fall foliage. Dark purple fruit provides summer food source for songbirds and other wildlife.
Woods rose - Rosa woodsii Woods rose Rosa woodsii <5’ pink June - August
Multi-branched deciduous shrub with red stems, prickly on the lower portion. Orange-red rosehips remain throughout winter, providing food source for birds. Prefers moist soil but may be found in drier, open areas. Rhizomatous growth; excellent for stream stabilization or erosion control.
Blue elderberry - Sambucus cerulea Blue elderberry Sambucus cerulea 10-20’ white May - September
Deciduous shrub or small tree. Abundant, small creamy white flowers in large, conical shaped clusters. Blue berries are edible. Excellent food source for wildlife. Important species in riparian plant communities.
Alpine spirea - Spiraea densiflora Alpine spirea Spiraea densiflora <36” pink June
Deciduous shrub with pink dome-shaped flowers. Found in wet meadows and streams at high elevations.
Douglas spirea - Spiraea douglasii Douglas spirea Spiraea douglasii 3-6’ white July
Deciduous shrub with dense, pink elongated flower clusters. Found along marsh edges, wet meadows and streams. Rhizomatous growth; excellent for stream stabilization or erosion control.