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Native plants · Texas

Native plants of Washington County

326 plant species are recorded as native to Texas in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in Washington County by USDA PLANTS. 120 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

Washington County, Texas

Native species
326 Typical Texas county: 145 (median of 254 counties)
Garden-ready natives
120 Typical Texas county: 61
Share by type (all 326 native species)
Percent of the 326 native species in each growth type
Tree 11% (36)
Shrub 2% (5)
Wildflower (forb) 55% (180)
Grass or grass-like 24% (79)
Vine 7% (22)
Fern 1% (4)

Wildflowers make up the largest share of the native list (55%), followed by grasses and grass-like plants (24%).

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 9a (2023 map).

The native plant list

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

Garden-ready natives 120

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

Garden-ready native plants of Washington County, Texas
PlantType HeightLight Water useHardy to
American beautyberry Callicarpa americana Shrub 6 ft Sun–part shade Low Zone 6b
American elm Ulmus americana Tree 120 ft Sun–part shade High Zone 2b
American lotus Nelumbo lutea Wildflower (forb) 3 ft Sun High Zone 3b
American pokeweed Phytolacca americana Wildflower (forb) 7.3 ft Shade-tolerant Medium Zone 4a
American water-willow Justicia americana Wildflower (forb) 2.5 ft Shade-tolerant Medium Zone 4b
big bluestem Andropogon gerardii Grass or grass-like 6 ft Sun Low Zone 2b
black walnut Juglans nigra Tree 100 ft Sun High Zone 4b
black willow Salix nigra Tree 100 ft Sun High Zone 1b
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
brownseed paspalum Paspalum plicatulum Grass or grass-like 3.3 ft Sun–part shade Low Zone 8a
buffalograss Bouteloua dactyloides Grass or grass-like 6 in Sun Medium Zone 3b
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
butterfly milkweed Asclepias tuberosa Wildflower (forb) 2 ft Sun Low Zone 4a
calico aster Symphyotrichum lateriflorum Wildflower (forb) 4 ft Sun Medium Zone 4a
Canada germander Teucrium canadense Wildflower (forb) 3.3 ft Sun–part shade High Zone 3a
Canada goldenrod Solidago altissima Wildflower (forb) 5 ft Sun–part shade Medium Zone 4b
Canada goldenrod Solidago canadensis Wildflower (forb) 3.5 ft Sun Medium Zone 3a
Canada wildrye Elymus canadensis Grass or grass-like 3 ft Shade-tolerant Medium Zone 3a
Canadian horseweed Conyza canadensis Wildflower (forb) 5 ft Sun Medium Zone 12b
Carolina buckthorn Frangula caroliniana Tree 20 ft Shade-tolerant — Zone 4b
Carolina elephantsfoot Elephantopus carolinianus Wildflower (forb) 2.7 ft Sun Medium Zone 6a
Carolina foxtail Alopecurus carolinianus Grass or grass-like 1.7 ft Sun Low Zone 3a
cedar elm Ulmus crassifolia Tree 90 ft Sun–part shade Medium Zone 6a
clasping coneflower Dracopis amplexicaulis Wildflower (forb) 2 ft Sun High Zone 10b
climbing hempvine Mikania scandens Vine 1 ft Shade-tolerant Medium Zone 3b
coast cockspur grass Echinochloa walteri Grass or grass-like 6.5 ft Sun High Zone 10b
common goldstar Hypoxis hirsuta Wildflower (forb) 10 in Sun–part shade Medium Zone 4a
common hoptree Ptelea trifoliata Tree 25 ft Sun–part shade High Zone 4a
common maidenhair Adiantum capillus-veneris Fern 1.7 ft Shade-tolerant High Zone 4a
common persimmon Diospyros virginiana Tree 55 ft Shade-tolerant Medium Zone 5a
composite dropseed Sporobolus compositus Grass or grass-like 3 ft Sun Low Zone 3b
crested pricklypoppy Argemone polyanthemos Wildflower (forb) 3 ft Sun Low Zone 5a
cucumberleaf sunflower Helianthus debilis Wildflower (forb) 6 in Sun Medium Zone 9b
cursed buttercup Ranunculus sceleratus Wildflower (forb) 2 ft Shade-tolerant High Zone 12b
cylinder jointtail grass Coelorachis cylindrica Grass or grass-like 3.2 ft Sun–part shade Low Zone 5a
delta arrowhead Sagittaria platyphylla Wildflower (forb) 3 ft Sun High Zone 6a
dotted blazing star Liatris punctata Wildflower (forb) 2 ft Sun Medium Zone 3a
eastern baccharis Baccharis halimifolia Tree 10 ft Sun–part shade High Zone 7a
eastern cottonwood Populus deltoides Tree 190 ft Sun High Zone 3a
eastern gamagrass Tripsacum dactyloides Grass or grass-like 5 ft Sun High Zone 5a
eastern redbud Cercis canadensis Tree 30 ft Shade-tolerant Low Zone 4b
eastern redcedar Juniperus virginiana Tree 50 ft Sun–part shade Low Zone 3a
eastern woodland sedge Carex blanda Grass or grass-like 2 ft Shade-tolerant High Zone 4b
false indigo bush Amorpha fruticosa Shrub 15 ft Sun Low Zone 3b
farkleberry Vaccinium arboreum Tree 28 ft Shade-tolerant Medium Zone 6a
flowering dogwood Cornus florida Tree 30 ft Shade-tolerant Low Zone 4b
forked rush Juncus dichotomus Grass or grass-like 2.9 ft Sun–part shade Medium Zone 8b
fowl mannagrass Glyceria striata Grass or grass-like 5.7 ft Shade-tolerant Medium Zone 3b
fragrant flatsedge Cyperus odoratus Grass or grass-like 2 ft Sun Medium Zone 11b
fringeleaf wild petunia Ruellia humilis Wildflower (forb) 2.6 ft Shade-tolerant Low Zone 4a
frost grape Vitis vulpina Vine 83 ft Sun–part shade Medium Zone 5a
grassleaf rush Juncus marginatus Grass or grass-like 2 ft Sun–part shade Medium Zone 5a
graybark grape Vitis cinerea Vine 50 ft Sun–part shade Medium Zone 6b
hairawn muhly Muhlenbergia capillaris Grass or grass-like 3 ft Sun High Zone 8a
hairy grama Bouteloua hirsuta Grass or grass-like 6 in Sun Low Zone 3b
hairy lespedeza Lespedeza hirta Wildflower (forb) 6 ft Sun Low Zone 6a
Illinois bundleflower Desmanthus illinoensis Wildflower (forb) 3 ft Sun Medium Zone 5b
Indian blanket Gaillardia pulchella Wildflower (forb) 2 ft Sun Medium Zone 10b
Indian woodoats Chasmanthium latifolium Grass or grass-like 4.6 ft Shade-tolerant Medium Zone 4a
Indiangrass Sorghastrum nutans Grass or grass-like 6 ft Sun Medium Zone 3b
inland rush Juncus interior Grass or grass-like 3 ft Sun–part shade Medium Zone 3b
lanceleaf greenbrier Smilax smallii Vine 1 ft Shade-tolerant Medium Zone 6b
late purple aster Symphyotrichum patens Wildflower (forb) 2.5 ft Shade-tolerant Medium Zone 3b
little barley Hordeum pusillum Grass or grass-like 1.2 ft Sun Medium Zone 10b
little bluestem Schizachyrium scoparium Grass or grass-like 3 ft Sun Low Zone 3b
Malabar sprangletop Leptochloa fusca Grass or grass-like 3.3 ft Sun High Zone 3a
marsh flatsedge Cyperus pseudovegetus Grass or grass-like 2.5 ft Sun High Zone 8a
Maryland senna Senna marilandica Wildflower (forb) 6.6 ft Sun–part shade Low Zone 5b
nodding lady's tresses Spiranthes cernua Wildflower (forb) 1.5 ft Sun High Zone 3b
northern catalpa Catalpa speciosa Tree 60 ft Sun Low Zone 3b
Osage-orange Maclura pomifera Tree 35 ft Sun Medium Zone 5a
panicledleaf ticktrefoil Desmodium paniculatum Wildflower (forb) 3 ft Sun–part shade Low Zone 6a
parsley hawthorn Crataegus marshallii Tree 25 ft Shade-tolerant Medium Zone 7a
partridge pea Chamaecrista fasciculata Wildflower (forb) 2.4 ft Shade-tolerant Medium Zone 7a
pecan Carya illinoinensis Tree 120 ft Sun High Zone 5a
Pennsylvania smartweed Polygonum pensylvanicum Wildflower (forb) 3.9 ft Sun Medium Zone 10b
peppervine Nekemias arborea Vine 1 in Shade-tolerant Medium Zone 6a
pignut hickory Carya glabra Tree 80 ft Sun–part shade Medium Zone 4a
plains lovegrass Eragrostis intermedia Grass or grass-like 2.7 ft Sun Low Zone 5a
planertree Planera aquatica Tree 50 ft Shade-tolerant Medium Zone 7a
possumhaw Ilex decidua Tree 33 ft Shade-tolerant Medium Zone 5b
post oak Quercus stellata Tree 60 ft Sun Medium Zone 4a
poverty rush Juncus tenuis Grass or grass-like 1.5 ft Sun–part shade Medium 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 locoweed Oxytropis lambertii Wildflower (forb) 1.4 ft Sun Low Zone 3b
purple poppymallow Callirhoe involucrata Wildflower (forb) 1 ft Sun Medium Zone 3b
purple threeawn Aristida purpurea Grass or grass-like 1.4 ft Sun Low Zone 4a
ravenfoot sedge Carex crus-corvi Grass or grass-like 3 ft Sun–part shade Medium Zone 4b
red buckeye Aesculus pavia Tree 25 ft Shade-tolerant High Zone 5a
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
roundhead rush Juncus validus Grass or grass-like 3.2 ft Sun–part shade High Zone 7a
sand dropseed Sporobolus cryptandrus Grass or grass-like 3 ft Sun Low Zone 3b
saw greenbrier Smilax bona-nox Vine 4 ft Shade-tolerant Medium Zone 5b
shortbristle horned beaksedge Rhynchospora corniculata Grass or grass-like 6.6 ft Sun Medium Zone 6a
sideoats grama Bouteloua curtipendula Grass or grass-like 3 ft Sun Medium Zone 3a
smooth sumac Rhus glabra Tree 12 ft Sun Low Zone 4a
stalkless yellowcress Rorippa sessiliflora Wildflower (forb) 1.5 ft Sun–part shade High Zone 12b
sugarberry Celtis laevigata Tree 80 ft Shade-tolerant High Zone 5a
swamp smartweed Polygonum hydropiperoides Wildflower (forb) — Sun Medium Zone 10b
sweetscent Pluchea odorata Wildflower (forb) 4.9 ft Sun Medium Zone 6a
switchgrass Panicum virgatum Grass or grass-like 5 ft Sun Medium Zone 3a
tapertip flatsedge Cyperus acuminatus Grass or grass-like 1.3 ft Sun–part shade High Zone 3b
trumpet creeper Campsis radicans Vine 2 ft Sun Low Zone 6a
trumpet honeysuckle Lonicera sempervirens Vine 16 ft Shade-tolerant Medium Zone 4a
turkey tangle fogfruit Phyla nodiflora Wildflower (forb) 2 in Sun–part shade Low Zone 5b
upright prairie coneflower Ratibida columnifera Wildflower (forb) 3.1 ft Sun Medium Zone 3a
valley redstem Ammannia coccinea Wildflower (forb) 1.6 ft Sun Medium Zone 3b
Virginia wildrye Elymus virginicus Grass or grass-like 2.5 ft Shade-tolerant Medium Zone 4b
water locust Gleditsia aquatica Tree 40 ft Sun–part shade — Zone 10a
water oak Quercus nigra Tree 90 ft Sun High Zone 5a
white avens Geum canadense Wildflower (forb) 3.9 ft Shade-tolerant Medium Zone 4a
wild tantan Desmanthus virgatus Wildflower (forb) 2 ft Shade-tolerant Low Zone 9a
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
yaupon Ilex vomitoria Tree 25 ft Sun–part shade Low Zone 8a

Other native species recorded here 206

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.

  • Alabama lipfern Cheilanthes alabamensis
  • Alabama supplejack Berchemia scandens
  • amberique-bean Strophostyles helvola
  • American bluehearts Buchnera americana
  • American buckwheat vine Brunnichia ovata
  • American burnweed Erechtites hieraciifolius
  • American star-thistle Centaurea americana
  • American wild carrot Daucus pusillus
  • annual marsh elder Iva annua
  • annual phlox Phlox drummondii
  • arrowfeather threeawn Aristida purpurascens
  • azure blue sage Salvia azurea
  • Baldwin's flatsedge Cyperus croceus
  • Baldwin's ironweed Vernonia baldwinii
  • beaked cornsalad Valerianella radiata
  • beaked panicgrass Panicum anceps
  • biannual lettuce Lactuca ludoviciana
  • bigpod sesbania Sesbania herbacea
  • bigseed alfalfa dodder Cuscuta indecora
  • bluejacket Tradescantia ohiensis
  • bluestem pricklypoppy Argemone albiflora
  • buffalobur nightshade Solanum rostratum
  • bushy knotweed Polygonum ramosissimum
  • button eryngo Eryngium yuccifolium
  • camphorweed Heterotheca subaxillaris
  • Canada lettuce Lactuca canadensis
  • Carolina anemone Anemone caroliniana
  • Carolina canarygrass Phalaris caroliniana
  • Carolina clover Trifolium carolinianum
  • Carolina coralbead Cocculus carolinus
  • Carolina desert-chicory Pyrrhopappus carolinianus
  • Carolina geranium Geranium carolinianum
  • Carolina larkspur Delphinium carolinianum
  • Carolina ponysfoot Dichondra carolinensis
  • Carolina woollywhite Hymenopappus scabiosaeus
  • catchfly prairie gentian Eustoma exaltatum
  • Cherokee sedge Carex cherokeensis
  • clasping Venus' looking-glass Triodanis perfoliata
  • coastal sandbur Cenchrus spinifex
  • crowpoison Nothoscordum bivalve
  • Cuman ragweed Ambrosia psilostachya
  • cusp dodder Cuscuta cuspidata
  • cutleaf evening primrose Oenothera laciniata
  • cutleaf groundcherry Physalis angulata
  • cypress panicgrass Dichanthelium dichotomum
  • Dakota mock vervain Glandularia bipinnatifida
  • densetuft hairsedge Bulbostylis capillaris
  • diamond-flowers Stenaria nigricans
  • downy hawthorn Crataegus mollis
  • Drummond's aster Symphyotrichum drummondii
  • dwarf sundew Drosera brevifolia
  • eastern poison ivy Toxicodendron radicans
  • ebony spleenwort Asplenium platyneuron
  • Elliott's bentgrass Agrostis elliottiana
  • elmleaf goldenrod Solidago ulmifolia
  • Engelmann's daisy Engelmannia peristenia
  • eyebane Chamaesyce nutans
  • false boneset Brickellia eupatorioides
  • fewleaf sunflower Helianthus occidentalis
  • Florida paspalum Paspalum floridanum
  • flowering spurge Euphorbia corollata
  • fragrant spikesedge Kyllinga odorata
  • fringed nutrush Scleria ciliata
  • globe beaksedge Rhynchospora globularis
  • globe flatsedge Cyperus echinatus
  • great ragweed Ambrosia trifida
  • green antelopehorn Asclepias viridis
  • green comet milkweed Asclepias viridiflora
  • grooved flax Linum sulcatum
  • groovestem Indian plantain Arnoglossum plantagineum
  • groundplum milkvetch Astragalus crassicarpus
  • Guadeloupe cucumber Melothria pendula
  • gum bully Sideroxylon lanuginosum
  • hairy fimbry Fimbristylis puberula
  • hairy pinweed Lechea mucronata
  • hairy sunflower Helianthus hirsutus
  • hairyfruit chervil Chaerophyllum tainturieri
  • hairyseed paspalum Paspalum pubiflorum
  • heartwing sorrel Rumex hastatulus
  • Heller's rosette grass Dichanthelium oligosanthes
  • herb of grace Bacopa monnieri
  • herbwilliam Ptilimnium capillaceum
  • hogwort Croton capitatus
  • hyssopleaf sandmat Chamaesyce hyssopifolia
  • Java-bean Senna obtusifolia
  • Jersey tea Ceanothus herbaceus
  • juniper leaf Polypremum procumbens
  • keeled bulrush Isolepis carinata
  • kidneyshape sedge Carex reniformis
  • largebracted plantain Plantago aristata
  • lateflowering thoroughwort Eupatorium serotinum
  • Leavenworth's sedge Carex leavenworthii
  • lemon beebalm Monarda citriodora
  • lesser duckweed Lemna aequinoctialis
  • littlehip hawthorn Crataegus spathulata
  • longflower beeblossom Oenothera filiformis
  • Louisiana vetch Vicia ludoviciana
  • lyreleaf sage Salvia lyrata
  • man of the earth Ipomoea pandurata
  • marsh bristlegrass Setaria parviflora
  • matted sandmat Chamaesyce serpens
  • Maximilian sunflower Helianthus maximiliani
  • meadow garlic Allium canadense
  • Mexican plum Prunus mexicana
  • Michaux's croton Croton michauxii
  • Missouri foxtail cactus Escobaria missouriensis
  • mucronate sprangletop Leptochloa panicea
  • Muhlenberg's sedge Carex muehlenbergii
  • narrowleaf pinweed Lechea tenuifolia
  • narrowleaf stoneseed Lithospermum incisum
  • northern slender lady's tresses Spiranthes lacera
  • Nuttall's prairie parsley Polytaenia nuttallii
  • Nuttall's sensitive-briar Mimosa nuttallii
  • openflower rosette grass Dichanthelium laxiflorum
  • pale dock Rumex altissimus
  • pasture heliotrope Heliotropium tenellum
  • Pennsylvania pellitory Parietaria pensylvanica
  • pine barren flatsedge Cyperus retrorsus
  • pineland threeseed mercury Acalypha ostryifolia
  • pink thoroughwort Fleischmannia incarnata
  • pinkladies Oenothera speciosa
  • potato dwarfdandelion Krigia dandelion
  • prairie broomweed Amphiachyris dracunculoides
  • prairie tea Croton monanthogynus
  • prairie threeawn Aristida oligantha
  • procession flower Polygala incarnata
  • purple cliffbrake Pellaea atropurpurea
  • purple false foxglove Agalinis purpurea
  • purple sandgrass Triplasis purpurea
  • queen's-delight Stillingia sylvatica
  • rabbit-tobacco Pseudognaphalium obtusifolium
  • red lovegrass Eragrostis secundiflora
  • redseed plantain Plantago rhodosperma
  • redwhisker clammyweed Polanisia dodecandra
  • rough false pennyroyal Hedeoma hispida
  • rough Mexican clover Richardia scabra
  • roughfruit scaleseed Spermolepis divaricata
  • roundleaf ragwort Packera obovata
  • roundseed panicgrass Dichanthelium sphaerocarpon
  • rusty blackhaw Viburnum rufidulum
  • sand spikerush Eleocharis montevidensis
  • scarlet spiderling Boerhavia coccinea
  • sidebeak pencilflower Stylosanthes biflora
  • sixweeks fescue Vulpia octoflora
  • sleepy silene Silene antirrhina
  • slender fimbry Fimbristylis autumnalis
  • slender plantain Plantago heterophylla
  • slickseed fuzzybean Strophostyles leiosperma
  • slimpod rush Juncus diffusissimus
  • small skullcap Scutellaria parvula
  • small Venus' looking-glass Triodanis biflora
  • smallflower fumewort Corydalis micrantha
  • smooth small-leaf ticktrefoil Desmodium marilandicum
  • smooth white oldfield aster Symphyotrichum racemosum
  • sneezeweed Helenium amarum
  • snow on the mountain Euphorbia marginata
  • soft goldenaster Chrysopsis pilosa
  • soft-hair marbleseed Onosmodium bejariense
  • sorrelvine Cissus trifoliata
  • southern annual saltmarsh aster Symphyotrichum divaricatum
  • southern dewberry Rubus trivialis
  • southern sedge Carex austrina
  • spoonleaf purple everlasting Gamochaeta purpurea
  • spotted beebalm Monarda punctata
  • spotted sandmat Chamaesyce maculata
  • spurred butterfly pea Centrosema virginianum
  • St. Andrew's cross Hypericum hypericoides
  • standing-cypress Ipomopsis rubra
  • starved panicgrass Dichanthelium depauperatum
  • stinking camphorweed Pluchea foetida
  • tapered rosette grass Dichanthelium acuminatum
  • Texas croton Croton texensis
  • Texas signalgrass Urochloa texana
  • Texas star Sabatia campestris
  • Texas toadflax Nuttallanthus texanus
  • Texas vervain Verbena halei
  • thin paspalum Paspalum setaceum
  • tiny bluet Houstonia pusilla
  • toothed spurge Euphorbia dentata
  • trailing lespedeza Lespedeza procumbens
  • trailing pearlwort Sagina decumbens
  • tumble windmill grass Chloris verticillata
  • tumblegrass Schedonnardus paniculatus
  • upright burhead Echinodorus berteroi
  • Vahl's fimbry Fimbristylis vahlii
  • velvetweed Oenothera curtiflora
  • violet woodsorrel Oxalis violacea
  • Virginia buttonweed Diodia virginiana
  • Virginia plantain Plantago virginica
  • Virginia springbeauty Claytonia virginica
  • warty spurge Euphorbia spathulata
  • wedgeleaf draba Draba cuneifolia
  • western horsenettle Solanum dimidiatum
  • western rough goldenrod Solidago radula
  • western tansymustard Descurainia pinnata
  • western wallflower Erysimum asperum
  • white four o'clock Mirabilis albida
  • white heath aster Symphyotrichum ericoides
  • whitemouth dayflower Commelina erecta
  • whorled milkweed Asclepias verticillata
  • whorled milkwort Polygala verticillata
  • willowleaf aster Symphyotrichum praealtum
  • woodland lettuce Lactuca floridana
  • yankeeweed Eupatorium compositifolium
  • yellow thistle Cirsium horridulum
  • yellowseed false pimpernel Lindernia dubia
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.

  • floating primrose-willowLudwigia peploides
  • Mexican teaDysphania ambrosioides

Compared with Texas

The typical county is the median of the 254 Texas 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 Texas
MeasureWashington CountyTypical countyStatewide
Native species 326 145 1,683
Garden-ready natives 120 61 656
Tree 36 — 164
Shrub 5 — 90
Wildflower (forb) 180 — 877
Grass or grass-like 79 — 431
Vine 22 — 83
Fern 4 — 38

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 48477), Texas. 326 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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