Native plants · Washington

Native plants of Island County

244 plant species are recorded as native to Washington in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in Island County by USDA PLANTS. 163 of them have growing records you can filter by light, moisture, height and estimated cold hardiness. 3 more species are listed as both native and introduced and kept in a separate section.

County summary · USDA PLANTS and Kew WCVP

Island County, Washington

Native species: 244 Typical Washington county: 300 (median of 39 counties)
Garden-ready natives: 163 Typical Washington county: 219
Share by type (all 244 native species): Percent of the 244 native species in each growth type

Tree 11% (27)
Shrub 12% (29)
Wildflower (forb) 52% (128)
Grass or grass-like 18% (44)
Vine 4% (9)
Fern 3% (7)

Wildflowers make up the largest share of the native list (52%), followed by grasses and grass-like plants (18%).

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

Garden-ready natives 163

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

Garden-ready native plants of Island County, Washington
Plant	Type	Height	Light	Water use	Hardy to
Alaska brome Bromus sitchensis	Grass or grass-like	5 ft	Shade-tolerant	Low	Zone 5b
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
American dunegrass Leymus mollis	Grass or grass-like	4 ft	Sun	Medium	Zone 8a
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
awlfruit sedge Carex stipata	Grass or grass-like	3.5 ft	Shade-tolerant	Medium	Zone 3b
beach pea Lathyrus japonicus	Vine	1.5 ft	Sun–part shade	Medium	Zone 4a
bearded fescue Festuca subulata	Grass or grass-like	1.2 ft	Shade-tolerant	High	Zone 3b
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 crowberry Empetrum nigrum	Shrub	1 ft	Sun	Low	Zone 3a
black hawthorn Crataegus douglasii	Tree	15 ft	Sun–part shade	High	Zone 2b
blackeyed Susan Rudbeckia hirta	Wildflower (forb)	1 ft	Sun	Medium	Zone 5a
bluejoint Calamagrostis canadensis	Grass or grass-like	4.9 ft	Sun	Medium	Zone 4a
bog blueberry Vaccinium uliginosum	Shrub	2 ft	Sun–part shade	Medium	Zone 3b
bog Labrador tea Ledum groenlandicum	Shrub	3 ft	Sun–part shade	Medium	Zone 4a
Brewer's bittercress Cardamine breweri	Wildflower (forb)	1.8 ft	Shade-tolerant	Medium	Zone 5b
broadfruit bur-reed Sparganium eurycarpum	Wildflower (forb)	4.9 ft	Sun–part shade	High	Zone 4a
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 huckleberry Vaccinium ovatum	Shrub	8 ft	Shade-tolerant	Low	Zone 8a
California oatgrass Danthonia californica	Grass or grass-like	2 ft	Sun	Medium	Zone 9a
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
Canadian waterweed Elodea canadensis	Wildflower (forb)	—	Sun	High	Zone 4a
Cascade barberry Mahonia nervosa	Shrub	2 ft	Shade-tolerant	Low	Zone 5b
chokecherry Prunus virginiana	Tree	25 ft	Sun	Medium	Zone 3a
cluster rose Rosa pisocarpa	Shrub	3 ft	Sun	—	Zone 5a
coastal monkeyflower Mimulus dentatus	Wildflower (forb)	1.5 ft	Shade-tolerant	Medium	Zone 7b
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 rush Juncus effusus	Grass or grass-like	6.6 ft	Sun	Medium	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
common threesquare Schoenoplectus pungens	Grass or grass-like	4.9 ft	Sun	High	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
cows clover Trifolium wormskioldii	Wildflower (forb)	3.5 ft	Sun–part shade	Medium	Zone 4b
cursed buttercup Ranunculus sceleratus	Wildflower (forb)	2 ft	Shade-tolerant	High	Zone 12b
darkthroat shootingstar Dodecatheon pulchellum	Wildflower (forb)	2 ft	Sun–part shade	Medium	Zone 4a
deer fern Blechnum spicant	Fern	3.5 ft	Sun–part shade	High	Zone 6b
dotted smartweed Polygonum punctatum	Wildflower (forb)	3.2 ft	Sun	Medium	Zone 10b
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
Douglas' grasswidow Olsynium douglasii	Wildflower (forb)	1 ft	Sun	Medium	Zone 5a
dwarf rose Rosa gymnocarpa	Shrub	3 ft	Shade-tolerant	Medium	Zone 5b
field horsetail Equisetum arvense	Fern	11 in	Sun–part shade	High	Zone 3a
fireweed Chamerion angustifolium	Wildflower (forb)	5.5 ft	Sun–part shade	High	Zone 3b
flatstem pondweed Potamogeton zosteriformis	Wildflower (forb)	—	Sun	High	Zone 3b
floating pondweed Potamogeton natans	Wildflower (forb)	—	Sun	High	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
greater creeping spearwort Ranunculus flammula	Wildflower (forb)	1.5 ft	Shade-tolerant	High	Zone 4a
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 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 plum Oemleria cerasiformis	Tree	5 ft	Sun–part shade	—	Zone 10a
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
largeleaf pondweed Potamogeton amplifolius	Wildflower (forb)	—	Sun	High	Zone 4a
leafy pondweed Potamogeton foliosus	Wildflower (forb)	—	Sun	High	Zone 3b
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
lodgepole pine Pinus contorta	Tree	99 ft	Sun	Medium	Zone 1a
longstalk starwort Stellaria longipes	Wildflower (forb)	11 in	Sun–part shade	High	Zone 4a
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
meadow barley Hordeum brachyantherum	Grass or grass-like	2 ft	Sun	Medium	Zone 3a
miner's lettuce Claytonia perfoliata	Wildflower (forb)	1 ft	Shade-tolerant	Medium	Zone 12b
Missouri goldenrod Solidago missouriensis	Wildflower (forb)	3 ft	Sun–part shade	Low	Zone 3b
nodding beggartick Bidens cernua	Wildflower (forb)	3.2 ft	Sun–part shade	High	Zone 12a
nodding waternymph Najas flexilis	Wildflower (forb)	2.5 ft	Sun–part shade	High	Zone 12a
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
oceanspray Holodiscus discolor	Shrub	12 ft	Sun	High	Zone 8a
old man's whiskers Geum triflorum	Wildflower (forb)	1.5 ft	Sun–part shade	Medium	Zone 3b
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 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 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
Pennsylvania bittercress Cardamine pensylvanica	Wildflower (forb)	1.5 ft	Shade-tolerant	Medium	Zone 4a
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 Junegrass Koeleria macrantha	Grass or grass-like	1.5 ft	Shade-tolerant	High	Zone 3b
quaking aspen Populus tremuloides	Tree	65 ft	Sun	High	Zone 1a
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 goosefoot Chenopodium rubrum	Wildflower (forb)	3 ft	Sun	High	Zone 12b
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
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
Rocky Mountain juniper Juniperus scopulorum	Tree	50 ft	Sun	Low	Zone 3b
rose spirea Spiraea douglasii	Shrub	7 ft	Sun	Low	Zone 5a
russet buffaloberry Shepherdia canadensis	Shrub	6 ft	Sun–part shade	Medium	Zone 1a
sago pondweed Stuckenia pectinata	Wildflower (forb)	—	Sun	High	Zone 3b
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
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
Scouler's woollyweed Hieracium scouleri	Wildflower (forb)	2 ft	Sun	Medium	Zone 4a
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
seashore bluegrass Poa macrantha	Grass or grass-like	5 in	Sun	Low	Zone 9b
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
shiny chickweed Stellaria nitens	Wildflower (forb)	10 in	Shade-tolerant	Medium	Zone 12a
shortawn foxtail Alopecurus aequalis	Grass or grass-like	2.5 ft	Sun–part shade	High	Zone 3b
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
silky beach pea Lathyrus littoralis	Vine	1.6 ft	Sun–part shade	Medium	Zone 8a
silverweed cinquefoil Argentina anserina	Wildflower (forb)	6 in	Shade-tolerant	High	Zone 5a
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
slender cinquefoil Potentilla gracilis	Wildflower (forb)	2.4 ft	Sun	Low	Zone 3a
slender hairgrass Deschampsia elongata	Grass or grass-like	3 ft	Sun	Low	Zone 3b
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
spike bentgrass Agrostis exarata	Grass or grass-like	3 ft	Sun	Medium	Zone 3b
star duckweed Lemna trisulca	Wildflower (forb)	4 in	Sun	High	Zone 3b
swordleaf rush Juncus ensifolius	Grass or grass-like	2 ft	Sun–part shade	High	Zone 3b
tall trisetum Trisetum canescens	Grass or grass-like	3.5 ft	Sun–part shade	Medium	Zone 4a
tapertip onion Allium acuminatum	Wildflower (forb)	1 ft	Sun	Low	Zone 4b
tapertip rush Juncus acuminatus	Grass or grass-like	3 ft	Sun–part shade	High	Zone 4a
thickspike wheatgrass Elymus lanceolatus	Grass or grass-like	2.3 ft	Sun	Low	Zone 3b
thimbleberry Rubus parviflorus	Shrub	4 ft	Sun–part shade	High	Zone 4b
three-way sedge Dulichium arundinaceum	Grass or grass-like	2.6 ft	Sun–part shade	High	Zone 3b
threepetal bedstraw Galium trifidum	Vine	10 in	Sun–part shade	High	Zone 3b
thrift seapink Armeria maritima	Wildflower (forb)	11 in	Sun	Medium	Zone 4b
tiny mousetail Myosurus minimus	Wildflower (forb)	5 in	Sun–part shade	Medium	Zone 12b
toad rush Juncus bufonius	Grass or grass-like	1 ft	Sun	Medium	Zone 12a
twinberry honeysuckle Lonicera involucrata	Shrub	10 ft	Shade-tolerant	High	Zone 3a
variableleaf pondweed Potamogeton gramineus	Wildflower (forb)	—	Sun	High	Zone 3b
Virginia glasswort Salicornia depressa	Wildflower (forb)	1 ft	Sun	Medium	Zone 8b
western columbine Aquilegia formosa	Wildflower (forb)	3 ft	Shade-tolerant	Medium	Zone 5a
western fescue Festuca occidentalis	Grass or grass-like	3 ft	Shade-tolerant	Low	Zone 3a
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 stoneseed Lithospermum ruderale	Wildflower (forb)	1.5 ft	Sun	Low	Zone 4b
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 wheatgrass Pascopyrum smithii	Grass or grass-like	2 ft	Sun	Medium	Zone 3a
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
whitebark raspberry Rubus leucodermis	Vine	1 ft	Sun	Medium	Zone 8a
widgeongrass Ruppia maritima	Wildflower (forb)	2 in	Sun	High	Zone 7a

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.

American wild carrot Daucus pusillus
autumn dwarf gentian Gentianella amarella
bastard toadflax Comandra umbellata
bog yellowcress Rorippa palustris
brittle pricklypear Opuntia fragilis
bulblet-bearing water hemlock Cicuta bulbifera
buttonbush dodder Cuscuta cephalanthi
chairmaker's bulrush Schoenoplectus americanus
chickenclaws Sarcocornia perennis
clasping Venus' looking-glass Triodanis perfoliata
claspleaf twistedstalk Streptopus amplexifolius
coast tarweed Madia sativa
common bladderwort Utricularia macrorhiza
curlytop knotweed Polygonum lapathifolium
Douglas' knotweed Polygonum douglasii
dune willow Salix hookeriana
European bur-reed Sparganium emersum
fairy slipper Calypso bulbosa
feathery false lily of the valley Maianthemum racemosum
foxtail barley Hordeum jubatum
fragrant bedstraw Galium triflorum
fringed willowherb Epilobium ciliatum
giant red Indian paintbrush Castilleja miniata
greenflowered wintergreen Pyrola chlorantha
hairy evening primrose Oenothera villosa
hemlock waterparsnip Sium suave
hooded coralroot Corallorhiza striata
hookedspur violet Viola adunca
Illinois pondweed Potamogeton illinoensis
leathery grapefern Botrychium multifidum
liverleaf wintergreen Pyrola asarifolia
long-stolon sedge Carex inops
marsh pea Lathyrus palustris
marsh skullcap Scutellaria galericulata
meadow deathcamas Zigadenus venenosus
meadow sedge Carex praticola
Menzies' campion Silene menziesii
Menzies' fiddleneck Amsinckia menziesii
Mexican Mosquito Fern Azolla microphylla
mountain tarweed Madia glomerata
narrowleaf bur-reed Sparganium angustifolium
narrowleaf hawkweed Hieracium umbellatum
narrowleaf minerslettuce Montia linearis
neckweed Veronica peregrina
nodding onion Allium cernuum
northern bog violet Viola nephrophylla
northern cluster sedge Carex arcta
pale false mannagrass Torreyochloa pallida
pale spikerush Eleocharis macrostachya
purple marshlocks Comarum palustre
Pursh seepweed Suaeda calceoliformis
Richardson's pondweed Potamogeton richardsonii
roundleaf sundew Drosera rotundifolia
salt sandspurry Spergularia salina
scentbottle Platanthera dilatata
seaside arrowgrass Triglochin maritima
seaside sandplant Honckenya peploides
skullcap speedwell Veronica scutellata
sleepy silene Silene antirrhina
slender phlox Microsteris gracilis
small cranberry Vaccinium oxycoccos
spineless hornwort Ceratophyllum echinatum
spinulose woodfern Dryopteris carthusiana
spring forget-me-not Myosotis verna
starry false lily of the valley Maianthemum stellatum
strawberry Fragaria ×ananassa
summer coralroot Corallorhiza maculata
sweetcicely Osmorhiza berteroi
tall annual willowherb Epilobium brachycarpum
tall blue lettuce Lactuca biennis
tower rockcress Arabis glabra
trailing pearlwort Sagina decumbens
turion duckweed Lemna turionifera
twinflower Linnaea borealis
Virginia pepperweed Lepidium virginicum
western marsh cudweed Gnaphalium palustre
western oakfern Gymnocarpium dryopteris
western rattlesnake plantain Goodyera oblongifolia
western tansymustard Descurainia pinnata
woodland draba Draba nemorosa
woodland strawberry Fragaria vesca

Also listed as native and introduced here 3

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.

beach strawberryFragaria chiloensis
common reedPhragmites australis
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, Island County and Washington
Measure	Island County	Typical county	Statewide
Native species	244	300	1,015
Garden-ready natives	163	219	621
Tree	27	—	74
Shrub	29	—	99
Wildflower (forb)	128	—	547
Grass or grass-like	44	—	234
Vine	9	—	16
Fern	7	—	45

Neighboring counties

Counties that share a ZIP code with Island County.

Snohomish County, WA 227 garden-ready

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: Island County (county FIPS 53029), Washington. 244 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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