Perennials, Ferns & Groundcovers

Successful ecological restoration projects have layers.

The plants that create the base level or carpet of your project are imperative to revegetation prosperity. The carpet layer helps reduce weeds and erosion while bolstering soil health. Ferns, perennials, and groundcovers are home to insects, ground-nesting birds, and small mammals.

Species Descriptions: Perennials, Ferns & GC

Categories

We discuss three types of plants that create the floor level of a project: ferns, groundcovers, and perennials.

In this list, groundcovers may be perennial or evergreen, but all are short (<3') and fill space by spreading with rhizomes, stolons, or segmented corms. Some groundcovers are more fragile than others and should not necessarily be tread upon.

For our gardeners and others who pay special attention to bloom color, groundcovers and perennials have been also organized by color in our Species Selection Guide.

Explore some of these superstars that call the Pacific Northwest home.

Additional Considerations

These species lists are not comprehensive of the incredible native diversity of our Pacific Northwest region. Instead, they detail the plants that we have found to have great value in restoration for their hardy characteristics and ecosystem services. For more complete databases, we recommend visiting our friends at the University of Washington Burke Herbarium or Washington Native Plant Society.

Ferns

Maidenhair fern

Adiantum aleuticum (A. pedantum)

Exposure: Partial shade to shade

Soil moisture: Moist

Salinity tolerance: None

Fire tolerance: Medium

Transplanting success: High

Growth rate: Moderate to slow

Form: Perennial herb to 2 feet, rhizomatous

One of our most delicate fern species, this species has striking black petioles. Maidenhair fern prefers sites high in organic matter. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Adiantum aleuticum
Adiantum aleuticum by David Hofmann on Flickr

Lady fern

Athyrium filix-femina

Exposure: Partial shade to shade

Soil moisture: Wet to moist

Salinity tolerance: None

Fire tolerance: Low

Transplanting success: High

Growth rate: Moderate to high

Form: Deciduous fern with fronds to 6 feet, from stout rhizomes

With ample moisture, lady fern is a vigorous grower; it is common on mucky streamside terraces. With very moist soil and fall installation, it may tolerate full sun. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Athyrium filix-femina
Athyrium filix-femina by Krzysztof Ziarnek, Kenraiz on Wikimedia

Spiny wood fern

Dryopteris expansa

Exposure: Full sun to partial shade

Soil moisture: Moist to wet

Salinity tolerance: Unknown

Fire tolerance: Unknown

Transplanting success: High

Growth rate: Moderate

Form: Deciduous fern with fronds to 3 feet, from stout rhizomes

This species spreads both vegetatively and by spore. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Dryopteris expansa
Dryopteris expansa by Paulo Ventura Araújo on Flora-on

Sword fern

Polystichum munitum

Exposure: Partial shade to shade

Soil moisture: Moist to dry

Salinity tolerance: None

Fire tolerance: Medium

Transplanting success: High

Growth rate: Moderate

Form: Evergreen fern with fronds to 5 feet, woody rhizomes

We often see sword fern planted in full sun, but transplants usually don’t survive in the open unless there is ample soil moisture. However, with suitable conditions this plant will thrive with little or no care after planting; it is highly successful when planted in partial or full shade and mulched. Sword fern is also tough and competitive against invasive species once established. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Polystichum munitum
Polystichum munitum by Agnieszka Kwiecień, Nova on Wikimedia

Deer fern

Struthiopteris spicant

Exposure: Shade

Soil moisture: Wet to moist

Salinity tolerance: None

Fire tolerance: Medium

Transplanting success: High

Growth rate: Moderate

Form: Evergreen fern with fronds to 2 feet

Common throughout moist, conifer forests in western Washington. One of the few species of fern native to our area to have dimorphic fertile and sterile fronds. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Blechnum spicant with fertile fronds
Blechnum spicant by Kerry Woods on Flickr

Groundcovers

Vanilla leaf

Achlys triphylla

Exposure: Partial shade to shade

Soil moisture: Moist, dry soil in shade okay

Salinity tolerance: Unknown

Fire tolerance: Unknown

Transplanting success: High

Growth rate: Moderate

Form: Perennial herb to 12 inches with rhizomes

Bloom color: White

Vanilla leaf spreads by rhizomes to fill in spaces. Flowers are a delicate but showy white spike. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Achlys triphylla in flower
Achlys triphylla by Don Summers on Flickr

Kinnikinnik

Arctostaphylos uva-ursi

Exposure: Full sun to partial shade

Soil moisture: Moist to dry, well-drained

Salinity tolerance: Medium

Fire tolerance: Low

Transplanting success: Medium

Growth rate: Slow until established

Form: Evergreen shrub or groundcover to 8 inches, mat forming with stolons

Bloom color: Pinky-white

Once established, kinnikinnik withstands drought and full sun exposure and does best in coarse, low-nutrient soils. It is not competitive on richer sites. It is slow to start growing, so plant densely or intermix with a fast grower if quick coverage is important. After a year or two, kinnikinnik will spread more rapidly to form mats. We often recommend this species for erosion control projects in full sun. An important food plant for wildlife. "Kinnikinnik" is the longest palindrome (a word spelled the same forwards or backwards) in the English language. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Arctostaphylos uva-ursi in flower
Arctostaphylos uva-ursi Robert Flogaus-Faust on Wikimedia

Wild ginger

Asarum caudatum

Exposure: Partial shade to deep shade

Soil moisture: Moist

Salinity tolerance: Unknown

Fire tolerance: Unknown

Transplanting success: Medium

Growth rate: Slow

Form: Evergreen perennial, mat forming, to 10 inches, from thick rhizomes and woody stem

Bloom color: Burgundy, purplish red

Wild ginger requires shade and soil rich in organic matter. It may not grow noticeably for a year or so following transplanting, but once established it begins to spread moderately by rhizomes and can put on several new leaves a year. It is common under western red cedar. We consider this a species for enhancement projects, not for revegetating open sites. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Asarum caudatum in flower
Asarum caudatum by Kerry Woods on Flickr

Coastal miterwort

Brewerimitella ovalis (Mitella ovalis)

Exposure: Shade

Soil moisture: Moist to wet

Salinity tolerance: Unknown

Fire tolerance: Unknown

Transplanting success: Medium

Growth rate: Moderate

Form: Herbaceous perennial up to 30 inches, rhizomatous

Bloom color: Greenish white

This species occurs along stream banks and in moist forests. Flowers are tiny, delicate and white and typically occur in spring. Click here for photographs of this species on the University of Washington Herbarium website.

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Common harebell

Campanula rotundifolia

Exposure: Full sun to partial shade

Soil moisture: Moist to dry

Salinity tolerance: Unknown

Fire tolerance: Unknown

Transplanting success: Moderate

Growth rate: Moderate

Form: Herb to 30 inches, slender rhizomes

Bloom color: Violet

Common harebell occurs in meadows and on rocky, open ground. Showy blooms are purple or rarely white and occur in June-September. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Campanula rotundifolia flowers
Campanula rotundifolia by Andreas Rockstein on Flickr

Bunchberry

Cornus unalaschkensis (C. canadensis)

Exposure: Partial shade to shade

Soil moisture: Moist

Salinity tolerance: None

Fire tolerance: High

Transplanting success: Moderate

Growth rate: Slow until established

Form: Soft herbaceous perennial to 10 inches, from slender, fleshy rhizomes

Bloom color: White

This species has blooms of showy white bracts in the spring, and red berries in the late summer or fall that are loved by birds. Can be tricky to establish unless there is adequate organic matter, prefers acidic soils. Cornus unalaschkensis was previously believed to be either the same species as C. canadensis or a naturally occurring hybrid, but it is now considered a separate species, more common in our ecoregion, with subtle but distinct differences from C. canadensis. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Cornus unalaschkensis in flower
Cornus unalaschkensis by Scott Elliott Smithson on Flickr

Bleeding heart

Dicentra formosa

Exposure: Partial shade to shade

Soil moisture: Moist, dry in shade okay

Salinity tolerance: None

Fire tolerance: High

Transplanting success: High

Growth rate: Rapid

Form: Soft herbaceous perennial to 20 inches, from slender, fleshy rhizomes

Bloom color: Pink to purple

Bleeding heart needs soil rich in organic matter to really shine - given moist, fluffy soil, this plant will spread rapidly. In poorer soil, bleeding heart will do reasonably well, as long as it is protected from the sun. Bleeding heart can provide food and nectar for wildlife. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Dicentra formosa in flower
Dicentra formosa by pfly on Flickr

Yellow monkey-flower

Erythranthe guttata

Exposure: Full sun to partial shade

Soil moisture: Wet, well-drained okay

Salinity tolerance: None

Fire tolerance: Medium

Transplanting success: Medium

Growth rate: Moderate

Form: Herbaceous perennial or annual to 30 inches, from creeping stolons and rhizomes

Bloom color: Yellow

This species is found along streams, in wet meadow, seeps, and other wet places. It does not require rich soil, but does need a steady supply of moisture. It spreads well by seed. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Mimulus guttatus in flower
Mimulus guttatus by brewbooks on Flickr

White fawn lily

Erythronium oregonum

Exposure: Full sun to partial shade

Soil moisture: Moist to dry

Salinity tolerance: Unknown

Fire tolerance: Unknown

Transplanting success: Medium

Growth rate: Moderate

Form: Herbaceous perennial to 12 inches with segmented corm

Bloom color: White/yellowish

This species has distinctive, mottled leaves and showy white flowers in spring. Occurs in prairies, meadows and in moist woodlands. Click here for more photographs of this species on the University of Washington Herbarium website.

 

Photo of Erythronium oregonum in flower
Erythronium oregonum by Walter Siegmund on Wikimedia

Coastal strawberry

Fragaria chiloensis

Exposure: Full sun to partial shade

Soil moisture: Moist to dry

Salinity tolerance: Low

Fire tolerance: High

Transplanting success: High

Growth rate: Rapid

Form: Leathery, somewhat evergreen perennial to 10 inches, spreads by runners

Bloom color: White

Very successful in coarse, poor soils characteristic of the early stages of restoration. It is competitive in disturbed, weedy sites and grows vigorously through the winter following fall planting in the Puget Sound area. It generally grows on sand dunes and sea bluffs, and it is well adapted to droughty, exposed conditions. We recommend it for erosion control projects because it spreads quickly and anchors the surface layer. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Fragaria chiloensis patch in flower
Fragaria chiloensis by Mike on Wikimedia

Woodland strawberry

Fragaria vesca

Exposure: Full sun to shade

Soil moisture: Moist

Salinity tolerance: Unknown

Fire tolerance: Unknown

Transplanting success: High

Growth rate: Rapid

Form: Herbaceous perennial to 12 inches, spreads by runners

Bloom color: White

Woodland strawberry will accept a fairly wide range of soil and light conditions, from dry soil in shaded areas to moist soil in the open sun. It spreads very quickly, and if the soil is rich, it will grow lushly to provide good cover and weed competition. Fruit is eaten by birds and small mammals (and humans if they're quick enough). Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Fragaria vesca patch in flower
Fragaria vesca by H. Zell on Wikimedia

Northern bedstraw

Galium boreale

Exposure: Full sun to shade

Soil moisture: Moist

Salinity tolerance: None

Fire tolerance: Low

Transplanting success: High

Growth rate: Rapid

Form: Herbaceous perennial to 30 inches with rhizomes

Bloom color: White

Prolific white blooms occur in summer. The sticky plant that those young at heart like to attach to your back as you're walking through the woods. Click here for more photographs of this species on the University of Washington Herbarium website.

Galium boreale in flower
Galium boreale by Robert Flogaus-Faust on Wikimedia

Rattlesnake plantain

Goodyera oblongifolia

Exposure: Shade

Soil moisture: Dry to moist

Transplanting success: High

Salinity tolerance: Unknown

Fire tolerance: Unknown

Growth rate: Slow to moderate

Form: Evergreen perennial to 6 inches with creeping rhizomes

Bloom color: White

One of our Pacific Northwest native orchids! This species has distinct, mottled leaves with a pattern of venation reminiscent of snakeskin. The inflorescence is a spike of tiny, white blooms. Click here for photographs of this species on the University of Washington Herbarium website.

Photo of patch of Goodyera oblongifolia in flower
Goodyera oblongifolia by Kirill Ignatyev on Flickr

Pacific waterleaf

Hydrophyllum tenuipes

Exposure: Partial shade to shade

Soil moisture: Moist

Salinity tolerance: Unknown

Fire tolerance: Unknown

Transplanting success: High

Growth rate: Moderate to rapid

Form: Herbaceous perennial to 30 inches, from short, thick rhizome and fleshy roots

Bloom color: White

Check out those sexy purple stamens! Waterleaf is common in moist, open forests in the lowlands. We have seen it spread copiously, once established. This species must be planted in shade and will benefit from light organic mulching (not more than an inch). Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Hydrophyllum tenuipes in flower
Hydrophyllum tenuipes by Leslie Seaton on Wikimedia

Oregon iris

Iris tenax

Exposure: Sun to partial shade

Soil moisture: Moist to dry

Salinity tolerance: None

Fire tolerance: Low

Transplanting success: High

Growth rate: Moderate to rapid

Form: Herbaceous perennial to 30 inches, from slender rhizomes

Bloom color: Purple

This species occurs in South Sound prairies, meadows, pastures, along roadsides and in open forests. Leaves are narrow and tough and flowers are bluish purple. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Iris tenax in flower
Iris tenax by Jon. D. Anderson on Flickr

Twinflower

Linnaea borealis

Exposure: Partial shade to deep shade

Soil moisture: Moist

Salinity tolerance: Unknown

Fire tolerance: Unknown

Transplanting success: Low to medium

Growth rate: Moderate

Form: Semi-woody evergreen to 4 inches with long, leafy runners (stolons)

Bloom color: White

We have found twinflower somewhat difficult to transplant successfully--it may rot if too wet or get crispy if too dry. Twinflower does well in shaded, organically rich habitats, free of invasives. It does not compete well with weeds. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of patch of Linnaea borealis in flower
Linnaea borealis by Brian Gratwicke on Wikimedia

False lily-of-the-valley

Maianthemum dilatatum

Exposure: Partial shade to shade

Soil moisture: Moist, dry in shade okay

Salinity tolerance: Unknown

Fire tolerance: Unknown

Transplanting success: High

Growth rate: Rapid

Form: Herbaceous perennial (somewhat evergreen) to 12 inches, from slender, branching rhizomes

Bloom color: White

False lily-of-the-valley does not like being in a pot, but once released into the soil, it spreads abundantly. For best results, with this species and many other native perennials, plant in at least partial shade and top-dress lightly with organic mulch. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Maianthemum dilatatum in flower with forming seed capsules
Maianthemum dilatatum by the National Forest Service on Flickr

Starry false Solomon's-seal

Maianthemum stellatum

Exposure: Partial shade to shade

Soil moisture: Moist

Salinity tolerance: Unknown

Fire tolerance: Unknown

Transplanting success: Medium

Growth rate: Moderate

Form: Herbaceous perennial to 20 inches, from thin rhizomes

Bloom color: White

Starry false Solomon's seal grows in similar habitats to false Solomon's seal, sometimes in slightly drier (or better-drained) substrates. For best results, transplant in the fall or provide irrigation and put into rich soil. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Maianthemum stellatum in flower
Maianthemum stellatum by Agnieszka Kwiecień, Nova on Wikimedia

Field mint

Mentha canadensis (M. arvensis)

Exposure: Full sun to partial shade

Soil moisture: Moist to wet

Salinity tolerance: None

Fire tolerance: None

Transplanting success: High

Growth rate: Rapid

Form: Herbaceous perennial to 2.5 feet with rhizomes

Bloom color: Violet

This species spreads readily by runner and seed - blooms are purple and occur in the summer. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Mentha arvensis in flower
Mentha arvensis by Danny S on Wikimedia

Wood sorrel

Oxalis oregana

Exposure: Partial shade to shade

Soil moisture: Moist to dry

Salinity tolerance: Unknown

Fire tolerance: Unknown

Transplanting success: High

Growth rate: Rapid

Form: Herbaceous perennial to 6 inches, from rhizomes

Bloom color: White

Wood sorrel spreads very well once established. It will tolerate fairly dry soil if planted in the shade. It is one of our most robust groundcovers, but still has trouble in open, weedy sites. Click here for photographs of this species on the University of Washington Herbarium website.

Photo of Oxalis oregana in flower
Oxalis oregana by Oregon State University on Wikimedia

Palmate coltsfoot

Petasites frigidus var. palmatus

Exposure: Shade to sun

Soil moisture: Wet to moist

Salinity tolerance: None

Fire tolerance: High

Transplanting success: High

Growth rate: Rapid

Form: Herbaceous perennial to 2 feet, from creeping rhizomes

Bloom color: Purplish/pinky white

This vigorous species is common throughout western Washington in wet to moist forests, clearings and swamps. Flowers precede the appearance of leaves in the spring. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Petasites frigidus var. palmatus patch in flower
Petasites frigidus var. palmatus by Stan Shebs on Wikimedia

Slender cinquefoil

Potentilla gracilis

Exposure: Sun to partial shade

Soil moisture: Moist

Salinity tolerance: None

Fire tolerance: None

Transplanting success: High

Growth rate: Rapid

Form: Herbaceous perennial to 2 1/2 feet, with rhizomes

Bloom color: Yellow

Like most cinquefoils, this species is a fast grower and spreads readily by seed. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Potentilla gracilis in flower
Potentilla gracilis by Dcrjsr on Wikimedia

Common self-heal

Prunella vulgaris

Exposure: Sun to partial shade

Soil moisture: Moist to dry

Salinity tolerance: None

Fire tolerance: Medium

Transplanting success: High

Growth rate: Rapid

Form: Herbaceous perennial to 1 1/2 feet with rhizomes

Bloom color: Violet to indigo

Purple blooms occur in the summer. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Prunella vulgaris in flower
Prunella vulgaris by Paul van de Velde on Wikimedia

Mad-dog skullcap

Scutellaria lateriflora

Exposure: Sun to partial shade

Soil moisture: Moist

Salinity tolerance: Unknown

Fire tolerance: Unknown

Transplanting success: High

Growth rate: Moderate

Form: Herbaceous perennial to 2 1/2 feet, from slender rhizomes

Bloom color: Violet

Occurs in moist meadows and clearings, this species has blue to pink blooms in late summer. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Scutellaria lateriflora in flower
Scutellaria lateriflora by Patrick Alexander on Wikimedia

Oregon stonecrop

Sedum oreganum

Exposure: Sun to partial shade

Soil moisture: Dry, moist okay if well drained

Salinity tolerance: Unknown

Fire tolerance: Unknown

Transplanting success: High

Growth rate: Rapid

Form: Herbaceous perennial to 6 inches, from rhizomes

Bloom color: Yellow

A good drought-tolerant choice for filling in a site with well-drained soils, spreads mainly vegetatively. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Sedum oreganum in flower
Sedum oreganum by Stan Shebs on Wikimedia

Broadleaf stonecrop

Sedum spathulifolium

Exposure: Sun to partial shade

Soil moisture: Dry, moist okay if well drained

Salinity tolerance: Unknown

Fire tolerance: Unknown

Transplanting success: High

Growth rate: Rapid

Form: Herbaceous perennial to 8 inches, from rhizomes

Bloom color: Yellow

Another good drought-tolerant choice for filling in a site with well-drained soils, spreads mainly vegetatively. Yellow bloom May-August. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Sedum spathulifolium in flower
Sedum spathulifolium by Steve Sullivan on Flickr

Golden-eyed grass

Sisyrinchium californicum

Exposure: Sun to partial shade

Soil moisture: Wet to moist

Salinity tolerance: Unknown

Fire tolerance: Unknown

Transplanting success: High

Growth rate: Moderate

Form: Herbaceous perennial to 18 inches

Bloom color: Yellow

A member of the iris family, this species has narrow grass-like leaves. Yellow blooms are showy and occur in June through July. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Sisyrinchium californicum in flower
Sisyrinchium californicum by Stan Shebs on Wikipedia

Blue-eyed grass

Sisyrinchium idahoense

Exposure: Sun to partial shade

Soil moisture: Wet to moist

Salinity tolerance: None

Fire tolerance: Medium

Transplanting success: High

Growth rate: Moderate

Form: Herbaceous perennial to 18 inches

Bloom color: Purple, violet to indigo

Another member of the iris family, this species also has narrow grass-like leaves. Showy, blue blooms have a yellow center. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Sisyrinchium idahoense in flower
Sisyrinchium idahoense by Walter Siegmund on Wikimedia

Douglas' aster

Symphyotrichum subspicatum

Exposure: Full sun to partial shade

Soil moisture: Moist

Salinity tolerance: High

Fire tolerance: High

Transplanting success: High

Growth rate: Moderate

Form: Herb to 2.5 feet, from creeping rhizomes

Bloom color: Purple, violet to indigo

This aster has showy blue-purple blooms and is common throughout our region. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Symphyotrichum subspicatum in flower
Symphyotrichum subspicatum by Doug Murphy on Wikimedia

Fringecup

Tellima grandiflora

Exposure: Partial shade to shade

Soil moisture: Moist

Salinity tolerance: Unknown

Fire tolerance: Unknown

Transplanting success: High

Growth rate: Moderate

Form: Herbaceous perennial to 30 inches, with short rhizomes

Bloom color: White

One of our customers says that this is the toughest flowering upland herb he knows: it competes with invasive species and tolerates disturbed soil and drought. For best results in full sun, provide an inch of mulch and some irrigation. This species transplants well and spreads well from seed. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Tellima grandiflora patch in flower
Tellima grandiflora by Agnieszka Kwiecień, Nova on Wikimedia

Three-leaf foamflower

Tiarella trifoliata

Exposure: Partial shade to shade

Soil moisture: Moist

Salinity tolerance: Unknown

Fire tolerance: Unknown

Transplanting success: High

Growth rate: Moderate

Form: Herbaceous perennial to 1 foot, from rhizomes

Bloom color: White

In the Saxifrage family, this species' leaves have three leaflets (hence the latin name) and flowers are white and occur on a long panicle in spring and summer. This species spreads by rhizomes to carpet areas and will also reproduce by seed. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Tiarella trifoliata patch in flower
Tiarella trifoliata by MinPin19170 on Wikimedia

Piggyback plant

Tolmiea menziesii

Exposure: Partial shade to shade

Soil moisture: Moist to wet

Salinity tolerance: Unknown

Fire tolerance: Unknown

Transplanting success: High

Growth rate: Rapid

Form: Herbaceous perennial to 30 inches, well-developed rhizomes

Bloom color: Pink

Piggyback plant is very common along stream sides, wetland edges, and moist forests. It requires plentiful moisture and some shade. Given these conditions, it can establish itself quickly and spread. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Tolmiea menziesii flower
Tolmiea menziesii bu Digitalbcon1 on Wikimedia

Western trillium

Trillium ovatum

Exposure: Partial shade to shade

Soil moisture: Moist

Salinity tolerance: Unknown

Fire tolerance: Unknown

Transplanting success: Medium

Growth rate: Slow

Form: Herbaceous perennial to 12 inches with rhizomes

Bloom color: White, turning pinky with age

Perhaps our showiest native perennial, large white blooms occur in spring, turning pink in color with age. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Trillium ovatum in flower
Trillium ovatum by Thayne Tuason on Wikimedia

Inside-out flower

Vancouveria hexandra

Exposure: Partial shade to shade

Soil moisture: Moist

Salinity tolerance: Unknown

Fire tolerance: Unknown

Transplanting success: High

Growth rate: Moderate

Form: Herbaceous perennial to 10 inches, from rhizomes

Bloom color: White

Inside-out flower spreads extensively in fertile, mature soils. We advise planting it in at least partial shade and, if soils are poor in organic matter, mulching lightly with wood chips. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Vancouveria hexandra patch in flower
Vancouveria hexandra by Agnieszka Kwiecień, Nova on Wikimedia

Early blue violet

Viola adunca

Exposure: Full sun to partial shade

Soil moisture: Moist to dry

Salinity tolerance: Unknown

Fire tolerance: Unknown

Transplanting success: High

Growth rate: Moderate

Form: Herbaceous perennial to 4 inches

Bloom color: Deep violet

A species common in south Sound prairies, this will spread more slowly on dry sites. Blooms are blue-purple, small but showy and occur in spring or summer. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Viola adunca patch in flower
Viola adunca by Judy Lantor on Flickr

Canary violet

Viola nuttallii var. praemorsa

Exposure: Full sun to partial shade

Soil moisture: Dry to moist

Salinity tolerance: Unknown

Fire tolerance: Unknown

Transplanting success: High

Growth rate: Moderate to fast

Form: Herbaceous perennial to 6 inches with rhizomes

Bloom color: Yellow

Canary violet occurs in meadows and grasslands as well as open Garry oak woodlands. Yellow blooms occur in April through July. Leaves are more fleshy than other species of native violets and are covered with dense pubescence. Click here for photographs of this species on the University of Washington Herbarium website.

Photo of Viola nuttallii var. praemorsa patch in flower
Viola nuttallii var. praemorsa by Broadwaymoon22 on Wikimedia

Marsh violet

Viola palustris

Exposure: Full sun to shade

Soil moisture: Moist to wet

Salinity tolerance: Unknown

Fire tolerance: Unknown

Transplanting success: High

Growth rate: Moderate

Form: Herbaceous perennial up to 3 inches from spreading rhizomes

Bloom color: Pale violet

Marsh violet is common along forest seeps, on streambanks and in wet meadows. The bloom is white to lilac, and occurs in May through July. Click here for photographs of this species on the University of Washington Herbarium website.

Photo of Viola palustris patch in flower
Viola palustris by Ana Júlia Pereira on Flora-on

Evergreen violet

Viola sempervirens

Exposure: Partial shade to deep shade

Soil moisture: Moist

Salinity tolerance: Unknown

Fire tolerance: Unknown

Transplanting success: Medium

Growth rate: Slow

Form: Evergreen perennial to 3 inches, scaly rhizomes, mat forming

Bloom color: Yellow

Evergreen violet will tolerate fairly dry conditions in the shade. It is tricky to transplant successfully, but once it has put down roots, it will flower frequently and spread by seed. Click here for photographs of this species on the University of Washington Herbarium website.

Photo of Viola sempervirens patch in flower
Viola sempervirens by Nicholas Turland on Flickr

Perennials

Red columbine

Aquilegia formosa

Exposure: Full sun to partial shade

Soil moisture: Moist, well-drained okay, dry soil in shade okay

Salinity tolerance: None

Fire tolerance: High

Transplanting success: High

Growth rate: Moderate

Form: Perennial herb to 3 feet, with taproot

Bloom color: Red

Red columbine grows in moist, open sites or in partial shade on the edge of woodlands. It may spread by seed, but generally doesn't compete well with invasives. It is a nectar plant for hummingbirds. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Aquilegia formosa flower
Aquilegia formosa by Walter Siegmund on Wikimedia

Coastal wormwood

Artemisia suksdorfii

Exposure: Full sun to partial shade

Soil moisture: Dry

Salinity tolerance: Unknown

Fire tolerance: Unknown

Transplanting success: High

Growth rate: Rapid

Form: Herbaceous perennial to 5 feet with rhizomes

Bloom color: Greenish yellow

Occurs in coastal areas and along the Puget Sound on sandy beaches and ocean bluffs. This drought-tolerant species has long spikes of yellowish blooms and grows vigorously to form clumps. Click here for more photographs of this species on the University of Washington Herbarium website.

 

Photo of Artemisia suksdorfii leaves
Artemisia suksdorfii by Walter Siegmund on Wikimedia

Goat's beard

Aruncus dioicus

Exposure: Partial shade to shade

Soil moisture: Moist, dry in shade okay

Salinity tolerance: Unknown

Fire tolerance: Unknown

Transplanting success: High

Growth rate: Rapid

Form: Herbaceous perennial to 6 feet, short rhizomes, separate male and female plants

Bloom color: White

Goat's beard has attributes that may serve you well on restoration sites: it transplants fine, tolerates some sun, and is much larger than most of our perennials so it's less likely to get lost or stepped on. Seeds are food for songbirds. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Aruncus dioicus in bloom
Aruncus dioicus by Dmitriy Konstantinov on Wikimedia

Greater boykinia

Boykinia intermedia (B. major)

Exposure: Sun to shade

Soil moisture: Wet to moist

Salinity tolerance: Unknown

Fire tolerance: Unknown

Transplanting success: High

Growth rate: Moderate

Form: Herbaceous perennial to 3 feet with stolons

Bloom color: White

Occurs along streams and in wet, open places. Blooms are white and delicate. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Boykinia intermedia flowers
Boykinia intermedia by James Gaither on Flickr

Common brodiaea

Brodiaea coronaria

Exposure: Full sun to partial shade

Soil moisture: Moist to dry

Salinity tolerance: Unknown

Fire tolerance: Unknown

Transplanting success: High

Growth rate: Moderate

Form: Herb to 12 inches, from a bulb

Bloom color: Purple

Common in prairies, meadows and rocky slopes. Flowers are showy, blue-purple and occur in late spring and early summer. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Brodiaea coronaria flower
Brodiaea coronaria by Walter Siegmund on Wikimedia

Great camas

Camassia leichtlinii

Exposure: Full sun to partial shade

Soil moisture: Moist to dry, well-drained

Salinity tolerance: Unknown

Fire tolerance: Unknown

Transplanting success: High

Growth rate: Moderate

Form: Herb to 18 inches, from a deep bulb

Bloom color: Purple

Great camas is less abundant than common camas but occurs on similar sites. Both camas species are very drought tolerant, requiring moist soils only during the early spring. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Camassia leichtlinii flowers
Camassia leichtlinii by John Winder on Flickr

Common camas

Camassia quamash

Exposure: Full sun to partial shade

Soil moisture: Moist to dry, well-drained

Salinity tolerance: None

Fire tolerance: Medium

Transplanting success: High

Growth rate: Moderate

Form: Herb to 25 inches, from a deep bulb

Bloom color: Purple

Common camas is abundant in meadows of western Washington, most typically in the prairies formed on gravelly glacial soils. For best results, outplant in the fall when camas is dormant--bulbs generally don't transplant well when disturbed during the growing-season. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Camassia quamash in flower
Camassia quamash by Walter Siegmund on Wikimedia

Nuttall's larkspur

Delphinium nuttallii

Exposure: Full sun to partial shade

Soil moisture: Moist to dry

Salinity tolerance: Unknown

Fire tolerance: Unknown

Transplanting success: High

Growth rate: Rapid

Form: Herbaceous perennial to 2 feet, spreads by seed

Bloom color: Indigo

Native to the gravelly outwash prairies of the South Sound, this species has deep blue to purple blooms. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Delphinium nuttallii in flower
Delphinium nuttallii by Samantha Elie

Common woolly sunflower

Eriophyllum lanatum

Exposure: Full sun to partial shade

Soil moisture: Moist to dry

Salinity tolerance: Unknown

Fire tolerance: Unknown

Transplanting success: High

Growth rate: Rapid

Form: Herbaceous perennial to 2 feet

Bloom color: Yellow

This multi-stemmed, spreading perennial has large, yellow, composite blooms and foliage covered with white, woolly pubescence. Also known as Oregon sunshine, this species is common throughout the state of Washington on dry, rocky sites. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Eriophyllum lanatum
Eriophyllum lanatum by Steve Sullivan on Flickr

Columbia lily

Lilium columbianum

Exposure: Partial shade

Soil moisture: Moist to dry

Salinity tolerance: Unknown

Fire tolerance: Unknown

Transplanting success: High

Growth rate: Moderate

Form: Herbaceous perennial to 4 feet, from a bulb

Bloom color: Orange

Also known as tiger lily, this species has spectacular orange blooms with red spots, occurring in summer. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Lilium columbianum in flower
Lilium columbianum by Murray Foubister on Wikimedia

Orange honeysuckle

Lonicera ciliosa

Exposure: Partial shade to deep shade

Soil moisture: Moist

Salinity tolerance: Unknown

Fire tolerance: Unknown

Transplanting success: High

Growth rate: Moderate to rapid

Form: Woody vine

Bloom color: Orange

This vine can climb up to 20 feet. Blooms are bright orange, tubular in shape and provide nectar for hummingbirds. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Lonicera ciliosa in flower
Lonicera ciliosa by Thayne Tuason on Flickr

Large-leaved lupine

Lupinus polyphyllus

Exposure: Full sun to partial shade

Soil moisture: Moist to dry

Salinity tolerance: Unknown

Fire tolerance: Unknown

Transplanting success: High

Growth rate: Rapid

Form: Herbaceous perennial to 5 feet with creeping rhizomes

Bloom color: Purple to indigo

A vigorous species, large-leaved lupine commonly occurs in wet meadows and along stream sides, but also on drier sites such as slopes and open woodlands. Flowers are blue to purple in color and occur in June through August. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of field of Lupinus polyphyllus
Lupinus polyphyllus by Anna on Flickr

False Solomon's-seal

Maianthemum racemosum

Exposure: Partial shade to shade

Soil moisture: Moist

Salinity tolerance: Unknown

Fire tolerance: Unknown

Transplanting success: Medium

Growth rate: Moderate

Form: Herbaceous perennial to 3 feet, from stout rhizomes

Bloom color: White

False Solomon's seal is found in moist forests and on stream banks in mature soils. Unless it will be receiving irrigation, transplant at the end of the growing season, in September through November. We consider false Solomon's seal and other lilies for enhancement projects, rather than for revegetating open sites. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Maianthemum racemosum with seeds
Maianthemum racemosum by Kaemat on Flickr

Woodland beardtongue

Nothochelone nemorosa

Exposure: Shade to partial shade

Soil moisture: Moist

Salinity tolerance: Unknown

Fire tolerance: Unknown

Transplanting success: High

Growth rate: Moderate

Form: Herbaceous perennial to 2 1/2 feet

Bloom color: Pink, fuschia to violet

Herbaceous stems emerge from a woody crown in this Figwort family member and flowers are pink to purple in color. This species spreads well from seed. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Nothochelone nemorosa in flower
Nothochelone nemorosa by peganum on Wikimedia

Broad-leaved shooting star

Primula hendersonii

Exposure: Full sun to partial shade

Soil moisture: Moist to dry

Salinity tolerance: Unknown

Fire tolerance: Unknown

Transplanting success: High

Growth rate: Moderate

Form: Herbaceous perennial to 12 inches

Bloom color: Purple

A prairie perennial with basal leaves and showy, magenta to pink blooms that occur in spring. Click here for more photographs of this species on the University of Washington Herbarium website.

Primula hendersonii in flower
Primula hendersonii by Eric in SF on Wikimedia

Smith's fairybells

Prosartes smithii (Disporum smithii)

Exposure: Partial shade to shade

Soil moisture: Moist

Salinity tolerance: Unknown

Fire tolerance: Unknown

Transplanting success: High

Growth rate: Moderate

Form: Herbaceous perennial to 3 feet with rhizomes

Bloom color: White

Showy, pendulant white blooms occur in the spring with orange berries to follow. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Prosartes smithii in flower
Prosartes smithii by David Hofmann on Flickr

Western buttercup

Ranunculus occidentalis

Exposure: Sun to partial shade

Soil moisture: Moist to dry

Salinity tolerance: Unknown

Fire tolerance: Unknown

Transplanting success: High

Growth rate: Rapid

Form: Herbaceous perennial to 18 inches

Bloom color: Yellow

A vigorous perennial that occurs in moist meadows and woodlands - widely tolerant. Flowers are yellow composites and occur in spring. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Ranunculus occidentalis in flower
Ranunculus occidentalis by Brent Miller on Flickr

California figwort

Scrophularia californica (S. oregana)

Exposure: Sun to shade

Soil moisture: Moist

Salinity tolerance: Unknown

Fire tolerance: Unknown

Transplanting success: High

Growth rate: Rapid

Form: Herbaceous perennial to 4 feet with rhizomes

Bloom color: Red

This species produces clusters of small, maroon blooms in July through August. Spreads readily by seed. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Scrophularia californica in flower
Scrophularia californica by Brent Miller on Flickr

Canada goldenrod

Solidago lepida (S. canadensis)

Exposure: Sun to partial shade

Soil moisture: Moist to dry

Salinity tolerance: None

Fire tolerance: High

Transplanting success: High

Growth rate: Rapid

Form: Herbaceous perennial to 5 feet, from rhizomes

Bloom color: Yellow

Canada goldenrod is common in open areas throughout western Washington. Yellow terminal blooms occur in July through October. This species spreads both vegetatively and by seed. Blooms attract both bumblebees and butterflies. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Solidago lepida patch in flower
Solidago lepida by Steve Chilton on Flickr

Missouri goldenrod

Solidago missouriensis

Exposure: Sun to partial shade

Soil moisture: Moist to dry

Salinity tolerance: Low

Fire tolerance: High

Transplanting success: High

Growth rate: Rapid

Form: Herbaceous perennial to 3 feet, from rhizomes

Bloom color: Yellow

This species spreads by creeping rhizomes and by seeds - yellow terminal blooms occur in the summer. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Solidago missouriensis in flower
Solidago missouriensis by Dan Mullen on Flickr

Cooley's hedge-nettle

Stachys cooleyae

Exposure: Sun to partial shade

Soil moisture: Moist

Salinity tolerance: Unknown

Fire tolerance: Unknown

Transplanting success: High

Growth rate: Rapid

Form: Herbaceous perennial to 5 feet, from rhizomes

Bloom color: Pink

Reddish purple tubular blooms attract hummingbirds. Given sufficient moisture, this species spreads both vegetatively and by seed to quickly fill in a space. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Stachys cooleyae patch in flower
Stachys cooleyae by Jon. D. Anderson on Flickr

Fool's onion

Triteleia hyacinthina

Exposure: Full sun to partial shade

Soil moisture: Moist to dry

Salinity tolerance: Unknown

Fire tolerance: Unknown

Transplanting success: High

Growth rate: Moderate

Form: Herb to 2 feet, from a corm

Bloom color: White

Occurs in open, rocky areas. Flowers are showy, white and occur in late spring and summer. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Triteleia hyacinthina flowers with bee and spider
Triteleia hyacinthina by M.E. Sanseverino on Flickr

Sitka valerian

Valeriana sitchensis

Exposure: Full sun to partial shade

Soil moisture: Moist

Salinity tolerance: Unknown

Fire tolerance: Unknown

Transplanting success: Medium

Growth rate: Medium to rapid

Form: Herbaceous perennial to 4 feet, from rhizomes

Bloom color: Pinky-white

Sitka valerian is common in moist meadows and open forests at middle elevations. Dense clusters of white to pinkish blooms occur in summer. Click here for more photographs of this species on the University of Washington Herbarium website.

Photo of Valeriana sitchensis in flower
Valeriana sitchensis by Mount Rainier National Park on Flickr