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Native plants · Washington

Native plants of Mason County

265 plant species are recorded as native to Washington in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in Mason County by USDA PLANTS. 184 of them have growing records you can filter by light, moisture, height and estimated cold hardiness. 4 more species are listed as both native and introduced and kept in a separate section.

County summary · USDA PLANTS and Kew WCVP

Mason County, Washington

Native species
265 Typical Washington county: 300 (median of 39 counties)
Garden-ready natives
184 Typical Washington county: 219
Share by type (all 265 native species)
Percent of the 265 native species in each growth type
Tree 15% (41)
Shrub 11% (30)
Wildflower (forb) 46% (121)
Grass or grass-like 21% (56)
Vine 2% (4)
Fern 5% (13)

Wildflowers make up the largest share of the native list (46%), followed by grasses and grass-like plants (21%).

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 zone 8b (2023 map).

The native plant list

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

Garden-ready natives 184

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

Garden-ready native plants of Mason County, Washington
PlantType HeightLight Water useHardy to
Alaska brome Bromus sitchensis Grass or grass-like 5 ft Shade-tolerant Low Zone 5b
Alaska cedar Callitropsis nootkatensis Tree 75 ft Shade-tolerant Medium Zone 5a
Alaska oniongrass Melica subulata Grass or grass-like 3.3 ft Shade-tolerant Medium Zone 4a
alkali buttercup Ranunculus cymbalaria Wildflower (forb) 1 ft Shade-tolerant High Zone 3b
alpine laurel Kalmia microphylla Shrub 1 ft Shade-tolerant Medium Zone 4b
alpine leafybract aster Symphyotrichum foliaceum Wildflower (forb) 2 ft Sun Medium Zone 3b
alpine mountainsorrel Oxyria digyna Wildflower (forb) 1 ft Sun–part shade Medium Zone 3a
American alpine speedwell Veronica wormskjoldii Wildflower (forb) 1 ft Sun–part shade High Zone 4b
American bistort Polygonum bistortoides Wildflower (forb) 1.5 ft Sun High Zone 3b
American speedwell Veronica americana Wildflower (forb) 10 in Shade-tolerant High Zone 3b
American vetch Vicia americana Vine 1.3 ft Sun Low Zone 3b
arctic sweet coltsfoot Petasites frigidus Wildflower (forb) 10 in Sun–part shade High Zone 3b
awlfruit sedge Carex stipata Grass or grass-like 3.5 ft Shade-tolerant Medium Zone 3b
beaked hazelnut Corylus cornuta Tree 15 ft Shade-tolerant Medium Zone 2b
bearded fescue Festuca subulata Grass or grass-like 1.2 ft Shade-tolerant High Zone 3b
big deervetch Lotus crassifolius Wildflower (forb) 3.5 ft Sun Medium Zone 7a
bigflower agoseris Agoseris grandiflora Wildflower (forb) 1.8 ft Sun Medium Zone 6a
bigleaf maple Acer macrophyllum Tree 60 ft Sun–part shade Medium Zone 6a
bitter cherry Prunus emarginata Tree 80 ft Sun Medium Zone 5a
black hawthorn Crataegus douglasii Tree 15 ft Sun–part shade High Zone 2b
blue wildrye Elymus glaucus Grass or grass-like 3.3 ft Shade-tolerant Low Zone 3b
bluejoint Calamagrostis canadensis Grass or grass-like 4.9 ft Sun Medium Zone 4a
bog Labrador tea Ledum groenlandicum Shrub 3 ft Sun–part shade Medium Zone 4a
bristlystalked sedge Carex leptalea Grass or grass-like 1.5 ft Shade-tolerant High Zone 4a
broadleaf arnica Arnica latifolia Wildflower (forb) 2 ft Sun–part shade High Zone 4a
broadleaf cattail Typha latifolia Wildflower (forb) 5 ft Sun–part shade High Zone 3b
broadleaf lupine Lupinus latifolius Wildflower (forb) 25 ft Shade-tolerant High Zone 5b
buckbean Menyanthes trifoliata Wildflower (forb) 10 in Sun–part shade High Zone 4a
California blackberry Rubus ursinus Shrub 2 ft Sun Medium Zone 8a
California brome Bromus carinatus Grass or grass-like 4 ft Sun Low Zone 9a
California false hellebore Veratrum californicum Wildflower (forb) 6 ft Shade-tolerant High Zone 3b
California huckleberry Vaccinium ovatum Shrub 8 ft Shade-tolerant Low Zone 8a
California poppy Eschscholzia californica Wildflower (forb) 1.2 ft Sun–part shade Low Zone 8a
Canada goldenrod Solidago canadensis Wildflower (forb) 3.5 ft Sun Medium Zone 3a
Canadian horseweed Conyza canadensis Wildflower (forb) 5 ft Sun Medium Zone 12b
Cascade azalea Rhododendron albiflorum Shrub 6 ft Sun–part shade High Zone 8a
Cascade barberry Mahonia nervosa Shrub 2 ft Shade-tolerant Low Zone 5b
Cascara buckthorn Frangula purshiana Tree 35 ft Shade-tolerant Medium Zone 7a
chamisso sedge Carex pachystachya Grass or grass-like 3.5 ft Shade-tolerant Medium Zone 3b
chokecherry Prunus virginiana Tree 25 ft Sun Medium Zone 3a
clasping arnica Arnica amplexicaulis Wildflower (forb) 2.5 ft Shade-tolerant High Zone 5a
cliff dwarf-primrose Douglasia laevigata Wildflower (forb) 2 in Sun–part shade Medium Zone 6a
cluster rose Rosa pisocarpa Shrub 3 ft Sun — Zone 5a
Columbia brome Bromus vulgaris Grass or grass-like 1 ft Shade-tolerant Low Zone 5a
common beargrass Xerophyllum tenax Wildflower (forb) 5 ft Sun–part shade Low Zone 8a
common cowparsnip Heracleum maximum Wildflower (forb) 8 ft Sun High Zone 3b
common juniper Juniperus communis Tree 10 ft Sun Low Zone 3a
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 spikerush Eleocharis palustris Grass or grass-like 1.3 ft Sun High Zone 3b
cows clover Trifolium wormskioldii Wildflower (forb) 3.5 ft Sun–part shade Medium Zone 4b
cutleaf daisy Erigeron compositus Wildflower (forb) 1 ft Sun Low Zone 4a
deer fern Blechnum spicant Fern 3.5 ft Sun–part shade High Zone 6b
diamondleaf willow Salix planifolia Tree 8 ft Sun Medium Zone 3b
Douglas aster Symphyotrichum subspicatum Wildflower (forb) 4 in Sun–part shade High Zone 6b
Douglas-fir Pseudotsuga menziesii Tree 200 ft Sun–part shade Medium Zone 4a
drooping woodreed Cinna latifolia Grass or grass-like 4.5 ft Sun–part shade High Zone 3b
dwarf bilberry Vaccinium cespitosum Shrub 1 ft Shade-tolerant High Zone 4a
dwarf rose Rosa gymnocarpa Shrub 3 ft Shade-tolerant Medium Zone 5b
fireweed Chamerion angustifolium Wildflower (forb) 5.5 ft Sun–part shade High Zone 3b
fowl mannagrass Glyceria striata Grass or grass-like 5.7 ft Shade-tolerant Medium Zone 3b
giant chinquapin Chrysolepis chrysophylla Tree 100 ft Shade-tolerant Medium Zone 4a
giant mountain aster Canadanthus modestus Wildflower (forb) 3 ft Sun Medium Zone 3b
golden sedge Carex aurea Grass or grass-like 1.2 ft Sun–part shade High Zone 4a
grand fir Abies grandis Tree 150 ft Shade-tolerant Medium Zone 4a
green alder Alnus viridis Tree 10 ft Sun–part shade High Zone 1a
Greene's mountain ash Sorbus scopulina Tree 12 ft Sun–part shade Medium Zone 7a
hairy manzanita Arctostaphylos columbiana Tree 6 ft Sun–part shade Low Zone 8a
hardstem bulrush Schoenoplectus acutus Grass or grass-like 9.8 ft Sun High Zone 3b
harsh Indian paintbrush Castilleja hispida Wildflower (forb) 1.5 ft Sun Low Zone 5a
hollyleaved barberry Mahonia aquifolium Shrub 8 ft Shade-tolerant Low Zone 3a
hooded lady's tresses Spiranthes romanzoffiana Wildflower (forb) 2.5 ft Sun–part shade High Zone 3b
Idaho fescue Festuca idahoensis Grass or grass-like 2 ft Sun–part shade Medium Zone 3b
Indian plum Oemleria cerasiformis Tree 5 ft Sun–part shade — Zone 10a
inland sedge Carex interior Grass or grass-like 1.5 ft Sun–part shade High Zone 3b
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' mock orange Philadelphus lewisii Shrub 12 ft Sun Low Zone 8a
little western bittercress Cardamine oligosperma Wildflower (forb) 1.7 ft Shade-tolerant Medium Zone 5a
Lyngbye's sedge Carex lyngbyei Grass or grass-like 1 ft Sun — Zone 2a
maiden blue eyed Mary Collinsia parviflora Wildflower (forb) 1 ft Shade-tolerant Medium Zone 4a
marsh bluegrass Poa leptocoma Grass or grass-like 2 ft Shade-tolerant High Zone 4b
marsh grass of Parnassus Parnassia palustris Wildflower (forb) 2.2 ft Sun High Zone 3b
meadow barley Hordeum brachyantherum Grass or grass-like 2 ft Sun Medium Zone 3a
Mertens' rush Juncus mertensianus Grass or grass-like 11 in Sun–part shade High Zone 4a
Mertens' sedge Carex mertensii Grass or grass-like 3.5 ft Shade-tolerant Medium Zone 4b
miner's lettuce Claytonia perfoliata Wildflower (forb) 1 ft Shade-tolerant Medium Zone 12b
Nootka rose Rosa nutkana Shrub 10 ft Shade-tolerant High Zone 8a
northern bedstraw Galium boreale Wildflower (forb) 3 ft Sun–part shade Medium Zone 4a
northern singlespike sedge Carex scirpoidea Grass or grass-like 1.5 ft Shade-tolerant Medium Zone 3b
Northwest Territory sedge Carex utriculata Grass or grass-like 3.5 ft Sun High Zone 3a
oceanspray Holodiscus discolor Shrub 12 ft Sun High Zone 8a
orange agoseris Agoseris aurantiaca Wildflower (forb) 1 ft Sun Medium Zone 4a
Oregon ash Fraxinus latifolia Tree 70 ft Sun–part shade Medium Zone 6b
Oregon bedstraw Galium oreganum Wildflower (forb) 1 ft Shade-tolerant Low Zone 6a
Oregon crab apple Malus fusca Tree 15 ft Sun–part shade — Zone 10a
Oregon white oak Quercus garryana Tree 80 ft Sun Low Zone 4a
Pacific bleeding heart Dicentra formosa Wildflower (forb) 1.5 ft Shade-tolerant Low Zone 5a
Pacific dogwood Cornus nuttallii Tree 50 ft Shade-tolerant Medium Zone 4b
Pacific madrone Arbutus menziesii Tree 80 ft Sun–part shade Low Zone 8b
Pacific ninebark Physocarpus capitatus Shrub 8 ft Sun Low Zone 4a
Pacific rhododendron Rhododendron macrophyllum Tree 15 ft Sun–part shade High Zone 8a
Pacific silver fir Abies amabilis Tree 165 ft Shade-tolerant Medium Zone 4b
Pacific yew Taxus brevifolia Tree 40 ft Shade-tolerant Low Zone 5b
panicled bulrush Scirpus microcarpus Grass or grass-like 5.5 ft Sun Medium Zone 3b
Parry's rush Juncus parryi Grass or grass-like 1 ft Sun–part shade Low Zone 4a
Pennsylvania buttercup Ranunculus pensylvanicus Wildflower (forb) 3.9 ft Shade-tolerant High Zone 4b
Philadelphia fleabane Erigeron philadelphicus Wildflower (forb) 2.8 ft Sun–part shade Medium Zone 4b
pipsissewa Chimaphila umbellata Shrub 1.5 ft Shade-tolerant Low Zone 3b
prairie fleabane Erigeron strigosus Wildflower (forb) 3 ft Sun Medium Zone 4b
prairie Junegrass Koeleria macrantha Grass or grass-like 1.5 ft Shade-tolerant High Zone 3b
prickly currant Ribes lacustre Shrub 3 ft Shade-tolerant — Zone 1a
primrose monkeyflower Mimulus primuloides Wildflower (forb) 1.5 ft Shade-tolerant High Zone 4a
quaking aspen Populus tremuloides Tree 65 ft Sun High Zone 1a
rattlesnake fern Botrychium virginianum Fern 1.4 ft Shade-tolerant Medium Zone 3b
red alder Alnus rubra Tree 90 ft Sun High Zone 5a
red elderberry Sambucus racemosa Tree 18 ft Sun–part shade High Zone 4a
red huckleberry Vaccinium parvifolium Shrub 12 ft Shade-tolerant Low Zone 6a
redflower currant Ribes sanguineum Shrub 12 ft Sun–part shade Medium Zone 8a
redosier dogwood Cornus sericea Tree 12 ft Sun High Zone 3b
redstem ceanothus Ceanothus sanguineus Shrub 10 ft Sun–part shade High Zone 6a
reed canarygrass Phalaris arundinacea Grass or grass-like 5 ft Sun High Zone 3b
ribbonleaf pondweed Potamogeton epihydrus Wildflower (forb) — Sun High Zone 4a
Robbins' pondweed Potamogeton robbinsii Wildflower (forb) — Sun High Zone 3b
Rocky Mountain goldenrod Solidago multiradiata Wildflower (forb) 1 ft Sun — Zone 1a
Rocky Mountain maple Acer glabrum Tree 30 ft Sun–part shade Low Zone 3a
rose spirea Spiraea douglasii Shrub 7 ft Sun Low Zone 5a
rough bentgrass Agrostis scabra Grass or grass-like 2.5 ft Sun Medium Zone 3b
russet buffaloberry Shepherdia canadensis Shrub 6 ft Sun–part shade Medium Zone 1a
salal Gaultheria shallon Shrub 6 ft Shade-tolerant High Zone 8a
salmonberry Rubus spectabilis Vine 12 ft Sun–part shade Medium Zone 4a
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
sanddune wallflower Erysimum capitatum Wildflower (forb) 2.5 ft Sun Medium Zone 4b
Saskatoon serviceberry Amelanchier alnifolia Tree 15 ft Sun–part shade Medium Zone 1a
Scouler's willow Salix scouleriana Tree 50 ft Sun–part shade High Zone 6a
sea milkwort Glaux maritima Wildflower (forb) 11 in Sun High Zone 4a
seashore bentgrass Agrostis pallens Grass or grass-like 2 ft Sun–part shade High Zone 5a
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
Siberian springbeauty Claytonia sibirica Wildflower (forb) 1.4 ft Shade-tolerant Medium Zone 3a
sicklekeel lupine Lupinus albicaulis Wildflower (forb) 3 ft Sun Medium Zone 12a
silvery sedge Carex canescens Grass or grass-like 2 ft Sun–part shade High Zone 4a
Sitka spruce Picea sitchensis Tree 200 ft Shade-tolerant Medium Zone 4a
Sitka willow Salix sitchensis Tree 23 ft Sun High Zone 5b
slender clarkia Clarkia gracilis Wildflower (forb) 2.5 ft Sun–part shade Medium Zone 12b
slender hairgrass Deschampsia elongata Grass or grass-like 3 ft Sun Low Zone 3b
slimstem reedgrass Calamagrostis stricta Grass or grass-like 3 ft Sun–part shade High Zone 3a
slough sedge Carex obnupta Grass or grass-like 3 ft Sun–part shade High Zone 7a
small camas Camassia quamash Wildflower (forb) 2.3 ft Shade-tolerant High Zone 4b
small enchanter's nightshade Circaea alpina Wildflower (forb) 11 in Shade-tolerant Medium Zone 3b
smallflowered woodrush Luzula parviflora Grass or grass-like 2 ft Shade-tolerant High Zone 4a
smooth horsetail Equisetum laevigatum Fern 5 ft Sun Low Zone 3b
snowbrush ceanothus Ceanothus velutinus Tree 10 ft Sun Medium Zone 5a
spike bentgrass Agrostis exarata Grass or grass-like 3 ft Sun Medium Zone 3b
spike trisetum Trisetum spicatum Grass or grass-like 1.9 ft Sun–part shade Medium Zone 3b
spreading phlox Phlox diffusa Wildflower (forb) 6 in Shade-tolerant Low Zone 6a
spreadingpod rockcress Arabis ×divaricarpa Wildflower (forb) 3 ft Shade-tolerant Low Zone 4b
squashberry Viburnum edule Shrub 2 ft Shade-tolerant — Zone 1a
subalpine fir Abies lasiocarpa Tree 90 ft Shade-tolerant Medium Zone 2a
subalpine fleabane Erigeron peregrinus Wildflower (forb) 2 ft Sun–part shade High Zone 3b
tapertip rush Juncus acuminatus Grass or grass-like 3 ft Sun–part shade High Zone 4a
thimbleberry Rubus parviflorus Shrub 4 ft Sun–part shade High Zone 4b
thinleaf huckleberry Vaccinium membranaceum Shrub 4.5 ft Sun–part shade Low Zone 3b
threepetal bedstraw Galium trifidum Vine 10 in Sun–part shade High Zone 3b
Tilesius' wormwood Artemisia tilesii Wildflower (forb) 36 ft Shade-tolerant Medium Zone 1a
toad rush Juncus bufonius Grass or grass-like 1 ft Sun Medium Zone 12a
tufted hairgrass Deschampsia cespitosa Grass or grass-like 3.4 ft Sun Low Zone 3b
twinberry honeysuckle Lonicera involucrata Shrub 10 ft Shade-tolerant High Zone 3a
twoheaded water-starwort Callitriche heterophylla Wildflower (forb) — Sun High Zone 4a
vine maple Acer circinatum Tree 20 ft Shade-tolerant Medium Zone 6a
Virginia glasswort Salicornia depressa Wildflower (forb) 1 ft Sun Medium Zone 8b
water horsetail Equisetum fluviatile Fern 3 ft Sun High Zone 4a
water sedge Carex aquatilis Grass or grass-like 2.9 ft Sun High Zone 3b
western columbine Aquilegia formosa Wildflower (forb) 3 ft Shade-tolerant Medium Zone 5a
western hemlock Tsuga heterophylla Tree 170 ft Shade-tolerant Medium Zone 5a
western pearly everlasting Anaphalis margaritacea Wildflower (forb) 3 ft Sun–part shade Medium Zone 3a
western redcedar Thuja plicata Tree 150 ft Shade-tolerant Medium Zone 4a
western swordfern Polystichum munitum Fern 3.5 ft Shade-tolerant High Zone 4a
western water hemlock Cicuta douglasii Wildflower (forb) 6 ft Sun High Zone 4b
western white pine Pinus monticola Tree 200 ft Sun–part shade Medium Zone 4a
white hawkweed Hieracium albiflorum Wildflower (forb) 3 ft Sun–part shade Low Zone 4a
white marsh marigold Caltha leptosepala Wildflower (forb) 1 ft Sun High Zone 4a
woodrush sedge Carex luzulina Grass or grass-like 2 ft Sun High Zone 4a

Other native species recorded here 81

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.

  • Aleutian maidenhair Adiantum aleuticum
  • American bird's-foot trefoil Lotus unifoliolatus
  • American rockbrake Cryptogramma acrostichoides
  • American yellowrocket Barbarea orthoceras
  • Apocynum ×floribundum Apocynum ×floribundum
  • bearded flatsedge Cyperus squarrosus
  • beautiful sandwort Minuartia rubella
  • bluntleaf pondweed Potamogeton obtusifolius
  • bluntleaf sandwort Moehringia lateriflora
  • bog yellowcress Rorippa palustris
  • boreal starwort Stellaria borealis
  • box knotweed Polygonum buxiforme
  • Buxbaum's sedge Carex buxbaumii
  • chickenclaws Sarcocornia perennis
  • Dortmann's cardinalflower Lobelia dortmanna
  • Douglas' knotweed Polygonum douglasii
  • dune willow Salix hookeriana
  • European bur-reed Sparganium emersum
  • feathery false lily of the valley Maianthemum racemosum
  • fewflower sedge Carex pauciflora
  • foxtail barley Hordeum jubatum
  • fragrant bedstraw Galium triflorum
  • fringed willowherb Epilobium ciliatum
  • giant red Indian paintbrush Castilleja miniata
  • green false hellebore Veratrum viride
  • hairy evening primrose Oenothera villosa
  • heartleaf twayblade Listera cordata
  • hookedspur violet Viola adunca
  • Hornemann's willowherb Epilobium hornemannii
  • Howell's pussytoes Antennaria howellii
  • lanceleaf figwort Scrophularia lanceolata
  • largeleaf sandwort Moehringia macrophylla
  • leathery grapefern Botrychium multifidum
  • liverleaf wintergreen Pyrola asarifolia
  • long-stolon sedge Carex inops
  • marsh violet Viola palustris
  • meadow deathcamas Zigadenus venenosus
  • milkflower willowherb Epilobium lactiflorum
  • moss campion Silene acaulis
  • muskflower Mimulus moschatus
  • narrowleaf bur-reed Sparganium angustifolium
  • northern adderstongue Ophioglossum pusillum
  • northern cluster sedge Carex arcta
  • northern hollyfern Polystichum lonchitis
  • northern wildrice Zizania palustris
  • pale false mannagrass Torreyochloa pallida
  • pimpernel willowherb Epilobium anagallidifolium
  • pinesap Monotropa hypopitys
  • poverty oatgrass Danthonia spicata
  • purple marshlocks Comarum palustre
  • Pursh seepweed Suaeda calceoliformis
  • red baneberry Actaea rubra
  • Richardson's pondweed Potamogeton richardsonii
  • roundleaf sundew Drosera rotundifolia
  • running clubmoss Lycopodium clavatum
  • saltmeadow rush Juncus gerardii
  • Scouler's popcornflower Plagiobothrys scouleri
  • seaside arrowgrass Triglochin maritima
  • shortspike watermilfoil Myriophyllum sibiricum
  • skullcap speedwell Veronica scutellata
  • sleepy silene Silene antirrhina
  • slender bog orchid Platanthera stricta
  • slender phlox Microsteris gracilis
  • small cranberry Vaccinium oxycoccos
  • spineless hornwort Ceratophyllum echinatum
  • spinulose woodfern Dryopteris carthusiana
  • spreading dogbane Apocynum androsaemifolium
  • starry false lily of the valley Maianthemum stellatum
  • summer coralroot Corallorhiza maculata
  • sweetcicely Osmorhiza berteroi
  • swollen bladderwort Utricularia inflata
  • tall annual willowherb Epilobium brachycarpum
  • tall blue lettuce Lactuca biennis
  • threadleaf crowfoot Ranunculus trichophyllus
  • tower rockcress Arabis glabra
  • twinflower Linnaea borealis
  • twistedstalk Streptopus lanceolatus
  • variegated scouringrush Equisetum variegatum
  • western rattlesnake plantain Goodyera oblongifolia
  • white beaksedge Rhynchospora alba
  • woodland strawberry Fragaria vesca
Also listed as native and introduced here 4

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.

  • bride's feathersAruncus dioicus
  • claspleaf twistedstalkStreptopus amplexifolius
  • hedge false bindweedCalystegia sepium
  • Kentucky bluegrassPoa pratensis

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, Mason County and Washington
MeasureMason CountyTypical countyStatewide
Native species 265 300 1,015
Garden-ready natives 184 219 621
Tree 41 — 74
Shrub 30 — 99
Wildflower (forb) 121 — 547
Grass or grass-like 56 — 234
Vine 4 — 16
Fern 13 — 45

Neighboring counties

Counties that share a ZIP code with Mason 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
Mason County (county FIPS 53045), Washington. 265 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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