Shrubs and Trees

  • Thin leaf alder (Alnus incana)

    Height:

    6-15’

    Flowering Period:

    spring

    Light Requirement:

    Partial Shade / Shade

    Partial Shade / Shade

    Moisture Requirement:

    Wet

    Wet

    Deciduous, multi-stemmed shrub or small tree found in riparian areas of eastern Cascades.

  • White alder (Alnus rhombifolia)

    Height:

    50 – 80’

    Flowering Period:

    spring

    Light Requirement:

    Full Sun

    Moisture Requirement:

    Wet

    Wet

    Deciduous tree with gray bark. Mature trees multi stemmed. Water dependent.

  • Serviceberry (Amelanchier alnifolia)

    Height:

    6-10’

    Color:

    white

    Flowering Period:

    April – June

    Light Requirement:

    Full Sun

    Moisture Requirement:

    Drought Tolerant

    Drought Tolerant

    Tall shrub with blue-green foliage in summer and reddish orange in the fall. Purple fruit provides summer wildlife food source.

  • Wyoming big Sagebrush (Artemisia tridentata ss. wyomingensis)

    Height:

    2-3’

    Color:

    yellow

    Flowering Period:

    June

    Light Requirement:

    Full Sun

    Moisture Requirement:

    Drought Tolerant

    Drought Tolerant

    Evergreen shrub with strongly aromatic leaves. Essential wildlife plant of the high desert.

  • Fringed sage (Artemisia frigida)

    Height:

    4 – 16″

    Color:

    green – yellow

    Flowering Period:

    July – August

    Light Requirement:

    Full Sun

    Moisture Requirement:

    Drought Tolerant

    Drought Tolerant

    Spreading, fragrant shrublet with grayish green, velvety leaves.

  • Basin big sage (Artemisia tridentata ssp. tridentata)

    Height:

    3-6’

    Color:

    yellow

    Flowering Period:

    June

    Light Requirement:

    Full Sun

    Moisture Requirement:

    Drought Tolerant / Moderate Moisture

    Drought Tolerant / Moderate Moisture

    Evergreen shrub with strongly aromatic leaves. Essential wildlife plant of the high desert.

  • Mountain mahogany (Cercocarpus ledifolius)

    Height:

    3-15’; up to 35’

    Color:

    white

    Flowering Period:

    May-July

    Light Requirement:

    Full Sun

    Moisture Requirement:

    Drought Tolerant

    Drought Tolerant

    Broadleaf, evergreen shrub to small tree with shiny foliage. Small tubular flowers occur in clusters of 2-3. Feathery plumes on seeds.

  • Gray (rubber) rabbitbrush (Chrysothamnus nauseousus)

    Height:

    2-4’

    Color:

    yellow

    Flowering Period:

    Late summer

    Light Requirement:

    Full Sun

    Moisture Requirement:

    Drought Tolerant

    Drought Tolerant

    Common deciduous shrub of sagebrush –steppe. Attracts butterflies.

  • Green (yellow) rabbitbrush (Chrysothamnus viscidiflorus)

    Height:

    1-4’

    Color:

    yellow

    Flowering Period:

    Late summer

    Light Requirement:

    Full Sun

    Moisture Requirement:

    Drought Tolerant

    Drought Tolerant

    Evergreen to deciduous shrub. Small, sticky, yellow flowers in rounded clusters.

  • Redosier dogwood (Cornus sericea)

    Height:

    4-20’

    Color:

    white

    Flowering Period:

    June-August

    Light Requirement:

    Full Sun / Partial Shade

    Moisture Requirement:

    Moderate Moisture / Wet

    Moderate Moisture / Wet

    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)

    Height:

    6-20’

    Color:

    white

    Flowering Period:

    May-July

    Light Requirement:

    Full Sun / Partial Shade

    Moisture Requirement:

    Moderate Moisture

    Moderate Moisture

    Deciduous shrub with arching multi-branched, reddish gray bark. Flowers drooping on 4-7” clusters. Red fall foliage.

  • Desertspray (Holodiscus dumosus)

    Height:

    20-60”

    Color:

    white

    Flowering Period:

    June-August

    Light Requirement:

    Full Sun

    Moisture Requirement:

    Drought Tolerant

    Drought Tolerant

    Deciduous shrub with multiple arching branches. Creamy white flower drooping in clusters. Bronze fall foliage.

  • Twinberry (Lonicera involucrata)

    Height:

    <9’

    Color:

    yellow

    Flowering Period:

    summer

    Light Requirement:

    Full Sun / Partial Shade

    Moisture Requirement:

    Moderate Moisture / Wet

    Moderate Moisture / Wet

    Erect, deciduous shrub. Tubular flowers in pairs. Black ‘twin’ berries not edible.

  • Mockorange (Philadelphus lewisii)

    Height:

    3-10’

    Color:

    white

    Flowering Period:

    late May to early July

    Light Requirement:

    Full Sun / Partial Shade

    Moisture Requirement:

    Moderate Moisture

    Moderate Moisture

    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)

    Height:

    6-12’

    Color:

    white

    Flowering Period:

    April – July

    Light Requirement:

    Full Sun / Partial Shade

    Moisture Requirement:

    Moderate Moisture / Wet

    Moderate Moisture / Wet

    Erect, deciduous, spreading shrub with peeling bark. Maple-leaved foliage turns Reddish brown in fall. Rounded clusters of creamy white flowers.

  • Black cottonwood (Populus balsamifera ssp. trichocarpa)

    Height:

    100-200’

    Flowering Period:

    March – June

    Light Requirement:

    Full Sun

    Moisture Requirement:

    Wet

    Wet

    Fast growing, large tree with branching trunk. Yellow fall foliage. Aggressive root system supports streambank stabilization.

  • Quaking aspen (Populus tremuloides)

    Height:

    16-50’

    Flowering Period:

    May-June

    Light Requirement:

    Full Sun

    Moisture Requirement:

    Moderate Moisture / Wet

    Moderate Moisture / Wet

    White bark and brilliant, yellow fall foliage. Provides food and habitat for wildlife.

  • Antelope bitterbrush (Purshia tridentata)

    Height:

    2-6’

    Color:

    yellow

    Flowering Period:

    April – July

    Light Requirement:

    Full Sun

    Moisture Requirement:

    Drought Tolerant

    Drought Tolerant

    Evergreen or deciduous shrub with rounded growth form.

  • Stinky currant (Ribes hudsonianum)

    Height:

    <5’

    Color:

    white

    Flowering Period:

    May – July

    Light Requirement:

    Partial Shade

    Partial Shade

    Moisture Requirement:

    Moderate Moisture / Wet

    Moderate Moisture / Wet

    Erect deciduous shrub. Flowers growing on up to 6” stalks in clusters of 6-15.

  • Prickly currant (Ribes lacustre)

    Height:

    3-4’

    Color:

    white

    Flowering Period:

    May-June

    Light Requirement:

    Full Sun / Partial Shade

    Moisture Requirement:

    Moderate Moisture / Wet

    Moderate Moisture / Wet

    Deciduous shrub with prickly stems. Bell-shaped flowers occur in drooping cluster of 5-15.

  • Golden currant (Ribes aureum)

    Height:

    3-9’

    Color:

    yellow

    Flowering Period:

    April – June

    Light Requirement:

    Full Sun / Partial Shade

    Moisture Requirement:

    Moderate Moisture

    Moderate Moisture

    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.

  • Wax currant (Ribes cereum)

    Height:

    <3'

    Color:

    pinkish white

    Flowering Period:

    April – June

    Light Requirement:

    Full Sun

    Moisture Requirement:

    Drought Tolerant

    Drought Tolerant

    Spreading, erect and rounded deciduous shrub. Urn shaped flowers occur in drooping clusters of 2-8. Numerous bright red berries post flowering.

  • Snow currant (Ribes niveum)

    Height:

    <8’

    Color:

    white

    Flowering Period:

    spring

    Light Requirement:

    Full Sun

    Moisture Requirement:

    Moderate Moisture

    Moderate Moisture

    Deciduous shrub with edible berry.

  • Red flowering currant (Ribes sanguineum)

    Height:

    3-12’

    Color:

    Red – bright pink

    Flowering Period:

    May-June

    Light Requirement:

    Full Sun

    Moisture Requirement:

    Moderate Moisture

    Moderate Moisture

    Beautiful tubular flowers occur in drooping cluster of 10-25. Attracts hummingbirds. Berries provide food for wildlife.

  • Woods rose (Rosa woodsii)

    Height:

    <5’

    Color:

    pink

    Flowering Period:

    June – August

    Light Requirement:

    Full Sun / Partial Shade

    Moisture Requirement:

    Moderate Moisture / Wet

    Moderate Moisture / Wet

    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.

  • Purple sage (Salvia dorrii)

    Height:

    12-36”

    Color:

    purple

    Flowering Period:

    May – July

    Light Requirement:

    Full Sun

    Moisture Requirement:

    Drought Tolerant

    Drought Tolerant

    Small woody shrub with silvery gray, semi-evergreen, aromatic foliage and abundant blooms.

  • Blue elderberry (Sambucus cerulea)

    Height:

    10-20’

    Color:

    white

    Flowering Period:

    May – September

    Light Requirement:

    Full Sun / Partial Shade

    Moisture Requirement:

    Moderate Moisture

    Moderate Moisture

    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)

    Height:

    <36”

    Color:

    pink

    Flowering Period:

    June

    Light Requirement:

    Full Sun / Partial Shade

    Moisture Requirement:

    Moderate Moisture / Wet

    Moderate Moisture / Wet

    Deciduous shrub with pink dome-shaped flowers. Found in wet meadows and streams at high elevations.

  • Douglas spirea (Spiraea douglasii)

    Height:

    3-6’

    Color:

    white

    Flowering Period:

    July

    Light Requirement:

    Full Sun / Partial Shade

    Moisture Requirement:

    Wet

    Wet

    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.