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Native plants recorded in your state and county

Native plants · Oklahoma

Native plants of Washington County

128 plant species are recorded as native to Oklahoma in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in Washington County by USDA PLANTS. 62 of them have growing records you can filter by light, moisture, height and estimated cold hardiness.

County summary · USDA PLANTS and Kew WCVP

Washington County, Oklahoma

Native species
128 Typical Oklahoma county: 203 (median of 77 counties)
Garden-ready natives
62 Typical Oklahoma county: 80
Share by type (all 128 native species)
Percent of the 128 native species in each growth type
Tree 23% (30)
Shrub <1% (1)
Wildflower (forb) 48% (62)
Grass or grass-like 20% (26)
Vine 6% (8)
Fern <1% (1)

Wildflowers make up the largest share of the native list (48%), followed by trees (23%).

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 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 62

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

Garden-ready native plants of Washington County, Oklahoma
PlantType HeightLight Water useHardy to
American elm Ulmus americana Tree 120 ft Sun–part shade High Zone 2b
American sycamore Platanus occidentalis Tree 100 ft Sun–part shade High Zone 4a
big bluestem Andropogon gerardii Grass or grass-like 6 ft Sun Low Zone 2b
bitternut hickory Carya cordiformis Tree 75 ft Sun Medium Zone 2b
black oak Quercus velutina Tree 80 ft Sun–part shade Medium Zone 4a
blackeyed Susan Rudbeckia hirta Wildflower (forb) 1 ft Sun Medium Zone 5a
blackjack oak Quercus marilandica Tree 25 ft Sun Low Zone 6a
boxelder Acer negundo Tree 60 ft Shade-tolerant Medium Zone 2b
broomsedge bluestem Andropogon virginicus Grass or grass-like 3 ft Sun Medium Zone 5b
bur oak Quercus macrocarpa Tree 100 ft Sun–part shade Medium Zone 3b
Bush's sedge Carex bushii Grass or grass-like 2 ft Sun–part shade Medium Zone 5a
Canada wildrye Elymus canadensis Grass or grass-like 3 ft Shade-tolerant Medium Zone 3a
cardinalflower Lobelia cardinalis Wildflower (forb) 5.9 ft Shade-tolerant Low Zone 4a
Carolina elephantsfoot Elephantopus carolinianus Wildflower (forb) 2.7 ft Sun Medium Zone 6a
chinquapin oak Quercus muehlenbergii Tree 70 ft Sun Medium Zone 4a
common hackberry Celtis occidentalis Tree 60 ft Shade-tolerant Low Zone 2b
common persimmon Diospyros virginiana Tree 55 ft Shade-tolerant Medium Zone 5a
common rush Juncus effusus Grass or grass-like 6.6 ft Sun Medium Zone 3b
common sneezeweed Helenium autumnale Wildflower (forb) 4.9 ft Sun Medium Zone 3a
disk waterhyssop Bacopa rotundifolia Wildflower (forb) 1 in Sun High Zone 4a
eastern cottonwood Populus deltoides Tree 190 ft Sun High Zone 3a
eastern redbud Cercis canadensis Tree 30 ft Shade-tolerant Low Zone 4b
flowering dogwood Cornus florida Tree 30 ft Shade-tolerant Low Zone 4b
golden tickseed Coreopsis tinctoria Wildflower (forb) 3 ft Sun–part shade High Zone 12b
graybark grape Vitis cinerea Vine 50 ft Sun–part shade Medium Zone 6b
green ash Fraxinus pennsylvanica Tree 80 ft Shade-tolerant Medium Zone 2b
halberdleaf rosemallow Hibiscus laevis Wildflower (forb) 8 ft Sun–part shade High Zone 6a
heartleaf peppervine Ampelopsis cordata Vine 2 ft Shade-tolerant Medium Zone 6b
Indian blanket Gaillardia pulchella Wildflower (forb) 2 ft Sun Medium Zone 10b
Indianhemp Apocynum cannabinum Wildflower (forb) 3.3 ft Sun–part shade High Zone 3a
Kentucky coffeetree Gymnocladus dioicus Tree 100 ft Sun Medium Zone 4a
leadplant Amorpha canescens Shrub 4 ft Shade-tolerant Low Zone 3b
little barley Hordeum pusillum Grass or grass-like 1.2 ft Sun Medium Zone 10b
marsh flatsedge Cyperus pseudovegetus Grass or grass-like 2.5 ft Sun High Zone 8a
pale purple coneflower Echinacea pallida Wildflower (forb) 1.2 ft Sun Medium Zone 4a
pecan Carya illinoinensis Tree 120 ft Sun High Zone 5a
pin oak Quercus palustris Tree 100 ft Sun High Zone 4a
post oak Quercus stellata Tree 60 ft Sun Medium Zone 4a
prairie cordgrass Spartina pectinata Grass or grass-like 8 ft Sun High Zone 3b
prairie fleabane Erigeron strigosus Wildflower (forb) 3 ft Sun Medium Zone 4b
prairie wedgescale Sphenopholis obtusata Grass or grass-like 3.2 ft Sun–part shade Medium Zone 3a
purple prairie clover Dalea purpurea Wildflower (forb) 3 ft Sun Medium Zone 3b
ravenfoot sedge Carex crus-corvi Grass or grass-like 3 ft Sun–part shade Medium Zone 4b
red maple Acer rubrum Tree 68 ft Sun–part shade High Zone 2b
redtop panicgrass Panicum rigidulum Grass or grass-like 3.3 ft Sun High Zone 4a
roughleaf dogwood Cornus drummondii Tree 20 ft Sun–part shade Low Zone 4b
rufous bulrush Scirpus pendulus Grass or grass-like 4 ft Sun Medium Zone 3b
shellbark hickory Carya laciniosa Tree 100 ft Shade-tolerant High Zone 5a
Shumard's oak Quercus shumardii Tree 100 ft Sun Medium Zone 5a
silver maple Acer saccharinum Tree 90 ft Sun–part shade Medium Zone 2b
slippery elm Ulmus rubra Tree 85 ft Shade-tolerant High Zone 3a
spotted St. Johnswort Hypericum punctatum Wildflower (forb) 3 ft Shade-tolerant Medium Zone 4a
sugarberry Celtis laevigata Tree 80 ft Shade-tolerant High Zone 5a
tapertip rush Juncus acuminatus Grass or grass-like 3 ft Sun–part shade High Zone 4a
trumpet creeper Campsis radicans Vine 2 ft Sun Low Zone 6a
upright prairie coneflower Ratibida columnifera Wildflower (forb) 3.1 ft Sun Medium Zone 3a
vine mesquite Panicum obtusum Grass or grass-like 2 ft Sun–part shade High Zone 5a
Virginia wildrye Elymus virginicus Grass or grass-like 2.5 ft Shade-tolerant Medium Zone 4b
water knotweed Polygonum amphibium Wildflower (forb) 1 in Sun High Zone 5a
winged sumac Rhus copallinum Tree 8 ft Sun Low Zone 4b
winter bentgrass Agrostis hyemalis Grass or grass-like 3.5 ft Sun–part shade High Zone 4a
woolly plantain Plantago patagonica Wildflower (forb) 6 in Sun Low Zone 12b

Other native species recorded here 66

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.

  • amberique-bean Strophostyles helvola
  • beaked cornsalad Valerianella radiata
  • beaked panicgrass Panicum anceps
  • branched foldwing Dicliptera brachiata
  • bristly greenbrier Smilax tamnoides
  • Carolina anemone Anemone caroliniana
  • Carolina geranium Geranium carolinianum
  • Carolina horsenettle Solanum carolinense
  • clasping milkweed Asclepias amplexicaulis
  • common moonseed Menispermum canadense
  • crowpoison Nothoscordum bivalve
  • desert biscuitroot Lomatium foeniculaceum
  • Dudley's rush Juncus dudleyi
  • dwarf chinquapin oak Quercus prinoides
  • dwarf hackberry Celtis pumila
  • eastern daisy fleabane Erigeron annuus
  • elmleaf goldenrod Solidago ulmifolia
  • field pansy Viola bicolor
  • fiveangled dodder Cuscuta pentagona
  • golden zizia Zizia aurea
  • green antelopehorn Asclepias viridis
  • groovestem Indian plantain Arnoglossum plantagineum
  • groundplum milkvetch Astragalus crassicarpus
  • gum bully Sideroxylon lanuginosum
  • hairy waterclover Marsilea vestita
  • hairyfruit chervil Chaerophyllum tainturieri
  • heavy sedge Carex gravida
  • hortulan plum Prunus hortulana
  • Juda's bush Iresine rhizomatosa
  • jumpseed Polygonum virginianum
  • largebracted plantain Plantago aristata
  • largeflower tickseed Coreopsis grandiflora
  • lowland rotala Rotala ramosior
  • meadow garlic Allium canadense
  • narrowleaf stoneseed Lithospermum incisum
  • Nuttall's prairie parsley Polytaenia nuttallii
  • Nuttall's sensitive-briar Mimosa nuttallii
  • pale dock Rumex altissimus
  • pale spikerush Eleocharis macrostachya
  • pinkladies Oenothera speciosa
  • poverty dropseed Sporobolus vaginiflorus
  • prairie blue-eyed grass Sisyrinchium campestre
  • prairie groundsel Packera plattensis
  • procession flower Polygala incarnata
  • purple meadow-rue Thalictrum dasycarpum
  • purplerocket Iodanthus pinnatifidus
  • rose mock vervain Glandularia canadensis
  • rough rattlesnakeroot Prenanthes aspera
  • Short's rockcress Arabis shortii
  • sidebeak pencilflower Stylosanthes biflora
  • sixweeks fescue Vulpia octoflora
  • slender yellow woodsorrel Oxalis dillenii
  • slimflower scurfpea Psoralidium tenuiflorum
  • slimpod rush Juncus diffusissimus
  • small Venus' looking-glass Triodanis biflora
  • soft goldenaster Chrysopsis pilosa
  • southeastern wildrye Elymus glabriflorus
  • spoonleaf purple everlasting Gamochaeta purpurea
  • Texas goldentop Euthamia gymnospermoides
  • Texas toadflax Nuttallanthus texanus
  • thin paspalum Paspalum setaceum
  • tumblegrass Schedonnardus paniculatus
  • Virginia plantain Plantago virginica
  • Virginia springbeauty Claytonia virginica
  • Virginia tephrosia Tephrosia virginiana
  • woolly dutchman's pipe Aristolochia tomentosa

Compared with Oklahoma

The typical county is the median of the 77 Oklahoma 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, Washington County and Oklahoma
MeasureWashington CountyTypical countyStatewide
Native species 128 203 1,513
Garden-ready natives 62 80 535
Tree 30 — 130
Shrub 1 — 63
Wildflower (forb) 62 — 849
Grass or grass-like 26 — 341
Vine 8 — 85
Fern 1 — 45

Neighboring counties

Counties that share a ZIP code with Washington 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
Washington County (county FIPS 40147), Oklahoma. 128 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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