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Native plants · Washington

Native plants of Adams County

182 plant species are recorded as native to Washington in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in Adams County by USDA PLANTS. 124 of them have growing records you can filter by light, moisture, height and estimated cold hardiness. 2 more species are listed as both native and introduced and kept in a separate section.

County summary · USDA PLANTS and Kew WCVP

Adams County, Washington

Native species
182 Typical Washington county: 300 (median of 39 counties)
Garden-ready natives
124 Typical Washington county: 219
Share by type (all 182 native species)
Percent of the 182 native species in each growth type
Tree 4% (8)
Shrub 9% (16)
Wildflower (forb) 67% (122)
Grass or grass-like 19% (34)
Vine <1% (1)
Fern <1% (1)

Wildflowers make up the largest share of the native list (67%), followed by grasses and grass-like plants (19%).

Recorded native ranges can include long-established populations that spread from gardens; check your state’s native plant society list for local guidance. How native status is decided.

ZIP codes mainly in this county fall in USDA hardiness zones 6b to 7a (2023 map).

The native plant list

Cold hardiness is estimated from each plant’s PLANTS minimum temperature. How we estimate it.

Garden-ready natives 124

Native species with PLANTS growing records (height, light, moisture, minimum temperature). “—” means PLANTS has no value.

Garden-ready native plants of Adams County, Washington
PlantType HeightLight Water useHardy to
alkali buttercup Ranunculus cymbalaria Wildflower (forb) 1 ft Shade-tolerant High Zone 3b
alkali cordgrass Spartina gracilis Grass or grass-like 3 ft Sun Medium Zone 3b
arrowleaf balsamroot Balsamorhiza sagittata Wildflower (forb) 2 ft Sun–part shade Medium Zone 3b
arumleaf arrowhead Sagittaria cuneata Wildflower (forb) 2.6 ft Sun Medium Zone 4a
basalt milkvetch Astragalus filipes Wildflower (forb) 2 ft Sun Low Zone 5a
basin wildrye Leymus cinereus Grass or grass-like 5 ft Sun High Zone 3a
big sagebrush Artemisia tridentata Tree 4 ft Sun Medium Zone 3a
bigseed biscuitroot Lomatium macrocarpum Wildflower (forb) 6 in Sun Low Zone 4b
black hawthorn Crataegus douglasii Tree 15 ft Sun–part shade High Zone 2b
bluebunch wheatgrass Pseudoroegneria spicata Grass or grass-like 3 ft Sun Low Zone 3b
blunt spikerush Eleocharis obtusa Grass or grass-like 1.6 ft Sun Medium Zone 11a
broadfruit bur-reed Sparganium eurycarpum Wildflower (forb) 4.9 ft Sun–part shade High Zone 4a
Canadian horseweed Conyza canadensis Wildflower (forb) 5 ft Sun Medium Zone 12b
Canadian milkvetch Astragalus canadensis Wildflower (forb) 6 in Sun Medium Zone 3b
Carey's balsamroot Balsamorhiza careyana Wildflower (forb) 2.5 ft Sun–part shade Low Zone 6a
chokecherry Prunus virginiana Tree 25 ft Sun Medium Zone 3a
clustered field sedge Carex praegracilis Grass or grass-like 2 ft Sun–part shade Medium Zone 3b
common mare's-tail Hippuris vulgaris Wildflower (forb) 2.8 ft Sun High Zone 3b
common selfheal Prunella vulgaris Wildflower (forb) 1.5 ft Sun–part shade Medium Zone 3b
common snowberry Symphoricarpos albus Shrub 3 ft Sun Medium Zone 3b
coon's tail Ceratophyllum demersum Wildflower (forb) — Sun–part shade High Zone 3b
cosmopolitan bulrush Bolboschoenus maritimus Grass or grass-like 3.2 ft Sun Medium Zone 5a
curvepod yellowcress Rorippa curvisiliqua Wildflower (forb) 1 ft Shade-tolerant High Zone 12b
darkthroat shootingstar Dodecatheon pulchellum Wildflower (forb) 2 ft Sun–part shade Medium Zone 4a
desert centaury Centaurium exaltatum Wildflower (forb) 1.5 ft Sun Medium Zone 12b
desert yellow fleabane Erigeron linearis Wildflower (forb) 1 ft Sun Low Zone 5a
Douglas' dustymaiden Chaenactis douglasii Wildflower (forb) 1.6 ft Sun–part shade Low Zone 3b
Douglas' sedge Carex douglasii Grass or grass-like 1.5 ft Sun Medium Zone 4a
false indigo bush Amorpha fruticosa Shrub 15 ft Sun Low Zone 3b
fernleaf biscuitroot Lomatium dissectum Wildflower (forb) 15 ft Sun–part shade Low Zone 8a
fiddleleaf hawksbeard Crepis runcinata Wildflower (forb) 1 ft Sun Medium Zone 3b
foothill deathcamas Zigadenus paniculatus Wildflower (forb) 1.6 ft Sun Medium Zone 4a
freckled milkvetch Astragalus lentiginosus Shrub 1.4 ft Sun Low Zone 4b
Gairdner's beardtongue Penstemon gairdneri Wildflower (forb) 1 ft Sun Low Zone 4b
giant goldenrod Solidago gigantea Wildflower (forb) 8.2 ft Sun–part shade Medium Zone 4a
golden currant Ribes aureum Shrub 10 ft Sun–part shade Low Zone 3b
gooseberryleaf globemallow Sphaeralcea grossulariifolia Wildflower (forb) 2 ft Sun–part shade Low Zone 5a
granite prickly phlox Linanthus pungens Wildflower (forb) 2 ft Shade-tolerant Low Zone 4a
greasewood Sarcobatus vermiculatus Shrub 10 ft Sun Low Zone 3b
hardstem bulrush Schoenoplectus acutus Grass or grass-like 9.8 ft Sun High Zone 3b
Idaho blue-eyed grass Sisyrinchium idahoense Wildflower (forb) 1.7 ft Shade-tolerant High Zone 3b
Idaho fescue Festuca idahoensis Grass or grass-like 2 ft Sun–part shade Medium Zone 3b
Indian ricegrass Achnatherum hymenoides Grass or grass-like 2 ft Sun Low Zone 3a
kinnikinnick Arctostaphylos uva-ursi Shrub 6 in Sun–part shade Low Zone 4a
largeleaf avens Geum macrophyllum Wildflower (forb) 2 ft Shade-tolerant Medium Zone 4a
Lewis flax Linum lewisii Wildflower (forb) 2.5 ft Sun Medium Zone 3b
Lewis' mock orange Philadelphus lewisii Shrub 12 ft Sun Low Zone 8a
longleaf phlox Phlox longifolia Wildflower (forb) 1.2 ft Sun–part shade Low Zone 6a
low pussytoes Antennaria dimorpha Wildflower (forb) 4 in Sun–part shade Low Zone 3b
MacKenzie's willow Salix prolixa Tree 45 ft Sun Low Zone 2a
maiden blue eyed Mary Collinsia parviflora Wildflower (forb) 1 ft Shade-tolerant Medium Zone 4a
mule-ears Wyethia amplexicaulis Wildflower (forb) 2.5 ft Sun Medium Zone 3b
Munro's globemallow Sphaeralcea munroana Wildflower (forb) 2.5 ft Sun Low Zone 4b
narrowleaf water plantain Alisma gramineum Wildflower (forb) 1.5 ft Sun High Zone 3a
Nebraska sedge Carex nebrascensis Grass or grass-like 3 ft Sun High Zone 3b
needle and thread Hesperostipa comata Grass or grass-like 3 ft Sun Low Zone 3b
nettleleaf giant hyssop Agastache urticifolia Wildflower (forb) 5 ft Sun–part shade Medium Zone 4a
nineleaf biscuitroot Lomatium triternatum Wildflower (forb) 2.2 ft Sun–part shade Medium Zone 4a
nodding microseris Microseris nutans Wildflower (forb) 2 ft Shade-tolerant Medium Zone 4b
northern bedstraw Galium boreale Wildflower (forb) 3 ft Sun–part shade Medium Zone 4a
Northwest Territory sedge Carex utriculata Grass or grass-like 3.5 ft Sun High Zone 3a
Nuttall's povertyweed Monolepis nuttalliana Wildflower (forb) 10 in Sun Medium Zone 12a
Oregon checkerbloom Sidalcea oregana Wildflower (forb) 4.5 ft Shade-tolerant High Zone 3b
pale evening primrose Oenothera pallida Wildflower (forb) 2 ft Sun Low Zone 3b
pinkfairies Clarkia pulchella Wildflower (forb) 2 ft Sun–part shade Medium Zone 12a
prairie Junegrass Koeleria macrantha Grass or grass-like 1.5 ft Shade-tolerant High Zone 3b
purple milkvetch Astragalus agrestis Wildflower (forb) 1 ft Sun Low Zone 4a
purple sage Salvia dorrii Shrub 2.5 ft Sun Medium Zone 5a
redosier dogwood Cornus sericea Tree 12 ft Sun High Zone 3b
reed canarygrass Phalaris arundinacea Grass or grass-like 5 ft Sun High Zone 3b
Rocky Mountain iris Iris missouriensis Wildflower (forb) 1 ft Sun–part shade High Zone 4b
roundleaf alumroot Heuchera cylindrica Wildflower (forb) 6 ft Sun–part shade Low Zone 6a
royal penstemon Penstemon speciosus Wildflower (forb) 2.5 ft Sun Low Zone 4a
rubber rabbitbrush Ericameria nauseosa Shrub 4 ft Sun Medium Zone 3b
sagebrush buttercup Ranunculus glaberrimus Wildflower (forb) 6 in Sun High Zone 3a
sagebrush mariposa lily Calochortus macrocarpus Wildflower (forb) 1.8 ft Sun Low Zone 5a
sago pondweed Stuckenia pectinata Wildflower (forb) — Sun High Zone 3b
salt heliotrope Heliotropium curassavicum Wildflower (forb) 1.2 ft Sun Medium Zone 4b
saltgrass Distichlis spicata Grass or grass-like 1.1 ft Sun Medium Zone 3b
Sandberg bluegrass Poa secunda Grass or grass-like 1.4 ft Sun–part shade Low Zone 3b
Saskatoon serviceberry Amelanchier alnifolia Tree 15 ft Sun–part shade Medium Zone 1a
scabland sagebrush Artemisia rigida Shrub 2 ft Sun Low Zone 3a
scarlet gilia Ipomopsis aggregata Wildflower (forb) 3 ft Sun Low Zone 5b
Scouler's woollyweed Hieracium scouleri Wildflower (forb) 2 ft Sun Medium Zone 4a
scratchgrass Muhlenbergia asperifolia Grass or grass-like 2 ft Shade-tolerant High Zone 5b
seep monkeyflower Mimulus guttatus Wildflower (forb) 2.5 ft Shade-tolerant High Zone 3b
shining willow Salix lucida Tree 13 ft Sun–part shade High Zone 3a
shortawn foxtail Alopecurus aequalis Grass or grass-like 2.5 ft Sun–part shade High Zone 3b
showy milkweed Asclepias speciosa Wildflower (forb) 6 ft Sun Medium Zone 4a
silky lupine Lupinus sericeus Wildflower (forb) 6 ft Sun Low Zone 4b
silverberry Elaeagnus commutata Shrub 12 ft Sun Low Zone 3b
silverleaf phacelia Phacelia hastata Wildflower (forb) 2 ft Sun–part shade Medium Zone 3b
slender cinquefoil Potentilla gracilis Wildflower (forb) 2.4 ft Sun Low Zone 3a
small camas Camassia quamash Wildflower (forb) 2.3 ft Shade-tolerant High Zone 4b
smooth horsetail Equisetum laevigatum Fern 5 ft Sun Low Zone 3b
snow buckwheat Eriogonum niveum Wildflower (forb) 1.5 ft Sun–part shade Low Zone 5a
spineless horsebrush Tetradymia canescens Shrub 4 ft Sun Low Zone 9a
squirreltail Elymus elymoides Grass or grass-like 1.5 ft Sun Low Zone 3a
star duckweed Lemna trisulca Wildflower (forb) 4 in Sun High Zone 3b
sticky cinquefoil Potentilla glandulosa Wildflower (forb) 1.5 ft Sun–part shade Low Zone 4a
Suksdorf's monkeyflower Mimulus suksdorfii Wildflower (forb) 7 in Shade-tolerant Medium Zone 12b
tapertip onion Allium acuminatum Wildflower (forb) 1 ft Sun Low Zone 4b
tarweed fiddleneck Amsinckia lycopsoides Wildflower (forb) 3 ft Sun Low Zone 4b
thickspike wheatgrass Elymus lanceolatus Grass or grass-like 2.3 ft Sun Low Zone 3b
thinleaved owl's-clover Orthocarpus tenuifolius Wildflower (forb) 1 ft Sun Low Zone 12b
threadleaf fleabane Erigeron filifolius Wildflower (forb) 1 ft Sun Low Zone 6a
threetip sagebrush Artemisia tripartita Shrub 4 ft Sun Low Zone 3a
Thurber's needlegrass Achnatherum thurberianum Grass or grass-like 2 ft Sun Low Zone 5a
thymeleaf buckwheat Eriogonum thymoides Wildflower (forb) 1 ft Sun Low Zone 5a
tiny mousetail Myosurus minimus Wildflower (forb) 5 in Sun–part shade Medium Zone 12b
Torrey's rush Juncus torreyi Grass or grass-like 3.1 ft Sun Medium Zone 3b
tufted hairgrass Deschampsia cespitosa Grass or grass-like 3.4 ft Sun Low Zone 3b
water birch Betula occidentalis Tree 25 ft Sun–part shade High Zone 1a
wax currant Ribes cereum Shrub 3 ft Sun Low Zone 5a
western needlegrass Achnatherum occidentale Grass or grass-like 2 ft Sun–part shade Low Zone 4b
western stoneseed Lithospermum ruderale Wildflower (forb) 1.5 ft Sun Low Zone 4b
western white clematis Clematis ligusticifolia Vine 1 ft Sun–part shade Medium Zone 3b
white sagebrush Artemisia ludoviciana Wildflower (forb) 3 ft Sun Low Zone 4a
Woods' rose Rosa woodsii Shrub 3 ft Sun–part shade Medium Zone 3a
woolly plantain Plantago patagonica Wildflower (forb) 6 in Sun Low Zone 12b
woollypod milkvetch Astragalus purshii Wildflower (forb) 7 in Sun Low Zone 4a
yellow penstemon Penstemon confertus Wildflower (forb) 2 ft Shade-tolerant Medium Zone 5a
yellow rabbitbrush Chrysothamnus viscidiflorus Shrub 3 ft Sun Low Zone 5a
yellow wildrye Leymus flavescens Grass or grass-like 3 ft Sun Medium Zone 5b

Other native species recorded here 58

PLANTS has no growing records for these, so light, moisture, height and zone filters cannot include them. Many are wild species seldom sold by nurseries.

  • American bird's-foot trefoil Lotus unifoliolatus
  • American sloughgrass Beckmannia syzigachne
  • bearded flatsedge Cyperus squarrosus
  • bigbract verbena Verbena bracteata
  • brook cinquefoil Potentilla rivalis
  • Carolina geranium Geranium carolinianum
  • chairmaker's bulrush Schoenoplectus americanus
  • clasping Venus' looking-glass Triodanis perfoliata
  • common bladderwort Utricularia macrorhiza
  • desert goosefoot Chenopodium pratericola
  • fineleaf hymenopappus Hymenopappus filifolius
  • flatspine stickseed Lappula occidentalis
  • foxtail barley Hordeum jubatum
  • fringed loosestrife Lysimachia ciliata
  • fringed willowherb Epilobium ciliatum
  • hairy evening primrose Oenothera villosa
  • hairy hedgenettle Stachys pilosa
  • hoary tansyaster Machaeranthera canescens
  • hookedspur violet Viola adunca
  • lesser wirelettuce Stephanomeria minor
  • manyflowered monkeyflower Mimulus floribundus
  • mapleleaf goosefoot Chenopodium simplex
  • marsh skullcap Scutellaria galericulata
  • mat sandbur Cenchrus longispinus
  • meadow deathcamas Zigadenus venenosus
  • Menzies' campion Silene menziesii
  • Menzies' fiddleneck Amsinckia menziesii
  • mountain tansymustard Descurainia incana
  • narrowleaf minerslettuce Montia linearis
  • neckweed Veronica peregrina
  • needleleaf navarretia Navarretia intertexta
  • northern water plantain Alisma triviale
  • pitseed goosefoot Chenopodium berlandieri
  • povertyweed Iva axillaris
  • Scouler's popcornflower Plagiobothrys scouleri
  • seaside arrowgrass Triglochin maritima
  • shaggy fleabane Erigeron pumilus
  • shortspike watermilfoil Myriophyllum sibiricum
  • sixweeks fescue Vulpia octoflora
  • slender phlox Microsteris gracilis
  • small pondweed Potamogeton pusillus
  • spiral ditchgrass Ruppia cirrhosa
  • starry false lily of the valley Maianthemum stellatum
  • swamp verbena Verbena hastata
  • tall annual willowherb Epilobium brachycarpum
  • tall blue lettuce Lactuca biennis
  • threadleaf crowfoot Ranunculus trichophyllus
  • tiny trumpet Collomia linearis
  • tower rockcress Arabis glabra
  • veiny dock Rumex venosus
  • water mudwort Limosella aquatica
  • wavyleaf thistle Cirsium undulatum
  • western marsh cudweed Gnaphalium palustre
  • western tansymustard Descurainia pinnata
  • white heath aster Symphyotrichum ericoides
  • whitestem blazingstar Mentzelia albicaulis
  • woolly sedge Carex pellita
  • yellow water buttercup Ranunculus flabellaris
Also listed as native and introduced here 2

PLANTS labels these species both native and introduced in this state: some forms are native and others were brought in from elsewhere. Most gardeners should choose plants from the main list.

Compared with Washington

The typical county is the median of the 39 Washington counties with PLANTS county records; the statewide figure counts every species native anywhere in the state. More species is not better or worse: counties differ in size, habitat and how thoroughly they have been surveyed.

Native species counts, Adams County and Washington
MeasureAdams CountyTypical countyStatewide
Native species 182 300 1,015
Garden-ready natives 124 219 621
Tree 8 — 74
Shrub 16 — 99
Wildflower (forb) 122 — 547
Grass or grass-like 34 — 234
Vine 1 — 16
Fern 1 — 45

Neighboring counties

Counties that share a ZIP code with Adams County.

Look up another ZIP

Matches your ZIP to the county it mostly lies in, then lists the plants recorded as native to your state (Kew’s World Checklist and USDA PLANTS) and recorded in that county by USDA PLANTS.

Source & data date

Source
USDA NRCS PLANTS Database: county distribution records, native status and plant characteristics. CC0 (public domain dedication, per the data.gov catalog record).
Kew’s World Checklist of Vascular Plants (WCVP): native or introduced status by state. CC BY 3.0.
USGS US-RIIS (ver. 2.0): species listed as introduced are excluded. CC0.
Citation
USDA, NRCS. 2026. The PLANTS Database (https://plants.usda.gov, 11/04/2026). National Plant Data Team, Greensboro, NC USA.
Govaerts R. (ed.) (2026). WCVP: World Checklist of Vascular Plants. Facilitated by the Royal Botanic Gardens, Kew. Data file dated 2026-06-04, http://sftp.kew.org/pub/data-repositories/WCVP/ (retrieved 2026-11-04). Paper: Govaerts R. et al. (2021) The World Checklist of Vascular Plants, a continuously updated resource for exploring global plant diversity. Scientific Data 8, 215.
Data date
Retrieved from PLANTS on November 4, 2026; WCVP data file dated June 4, 2026.
Zones
USDA Plant Hardiness Zone Map (2023) ZIP table: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed November 3, 2026. Plant zones on this site are our estimate, not the official map.
Scope
Adams County (county FIPS 53001), Washington. 182 native species from PLANTS county distribution records; garden-ready = species with a PLANTS characteristics record.
Method
A species is listed when it is recorded as native to the state in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in the county by USDA PLANTS. Species PLANTS labels both native and introduced are listed separately. Full method · All sources

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