Native plants · Oklahoma

Native plants of Tillman County

63 plant species are recorded as native to Oklahoma in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in Tillman County by USDA PLANTS. 23 of them have growing records you can filter by light, moisture, height and estimated cold hardiness.

County summary · USDA PLANTS and Kew WCVP

Tillman County, Oklahoma

PLANTS records only 23 garden-ready natives here (under 30). County records are thin in some places; the Oklahoma list is a useful second check.

Native species: 63 Typical Oklahoma county: 203 (median of 77 counties)
Garden-ready natives: 23 Typical Oklahoma county: 80
Share by type (all 63 native species): Percent of the 63 native species in each growth type

Tree 6% (4)
Wildflower (forb) 70% (44)
Grass or grass-like 19% (12)
Vine 3% (2)
Fern 2% (1)

Wildflowers make up the largest share of the native list (70%), 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 7b to 8a (2023 map).

The native plant list

Garden-ready natives 23

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

Garden-ready native plants of Tillman County, Oklahoma
Plant	Type	Height	Light	Water use	Hardy to
American elm Ulmus americana	Tree	120 ft	Sun–part shade	High	Zone 2b
American water-willow Justicia americana	Wildflower (forb)	2.5 ft	Shade-tolerant	Medium	Zone 4b
butterfly milkweed Asclepias tuberosa	Wildflower (forb)	2 ft	Sun	Low	Zone 4a
clasping coneflower Dracopis amplexicaulis	Wildflower (forb)	2 ft	Sun	High	Zone 10b
common hackberry Celtis occidentalis	Tree	60 ft	Shade-tolerant	Low	Zone 2b
dotted smartweed Polygonum punctatum	Wildflower (forb)	3.2 ft	Sun	Medium	Zone 10b
golden tickseed Coreopsis tinctoria	Wildflower (forb)	3 ft	Sun–part shade	High	Zone 12b
honey mesquite Prosopis glandulosa	Tree	50 ft	Sun	Low	Zone 6a
Indian blanket Gaillardia pulchella	Wildflower (forb)	2 ft	Sun	Medium	Zone 10b
little barley Hordeum pusillum	Grass or grass-like	1.2 ft	Sun	Medium	Zone 10b
Missouri gourd Cucurbita foetidissima	Vine	1 ft	Sun	Low	Zone 5a
narrowleaf blue-eyed grass Sisyrinchium angustifolium	Wildflower (forb)	2 ft	Sun–part shade	Medium	Zone 7a
prairie fleabane Erigeron strigosus	Wildflower (forb)	3 ft	Sun	Medium	Zone 4b
purple threeawn Aristida purpurea	Grass or grass-like	1.4 ft	Sun	Low	Zone 4a
sand dropseed Sporobolus cryptandrus	Grass or grass-like	3 ft	Sun	Low	Zone 3b
sand lovegrass Eragrostis trichodes	Grass or grass-like	3.5 ft	Sun	Medium	Zone 5a
scarlet globemallow Sphaeralcea coccinea	Wildflower (forb)	1.5 ft	Sun	Low	Zone 5a
smooth horsetail Equisetum laevigatum	Fern	5 ft	Sun	Low	Zone 3b
sugarberry Celtis laevigata	Tree	80 ft	Shade-tolerant	High	Zone 5a
upright prairie coneflower Ratibida columnifera	Wildflower (forb)	3.1 ft	Sun	Medium	Zone 3a
western wheatgrass Pascopyrum smithii	Grass or grass-like	2 ft	Sun	Medium	Zone 3a
white prairie clover Dalea candida	Wildflower (forb)	2 ft	Sun–part shade	Medium	Zone 3b
woolly plantain Plantago patagonica	Wildflower (forb)	6 in	Sun	Low	Zone 12b

Other native species recorded here 40

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 star-thistle Centaurea americana
bighead pygmycudweed Evax prolifera
buffalobur nightshade Solanum rostratum
camphorweed Heterotheca subaxillaris
Carolina geranium Geranium carolinianum
Carolina larkspur Delphinium carolinianum
curvepod fumewort Corydalis curvisiliqua
cutleaf evening primrose Oenothera laciniata
Dakota mock vervain Glandularia bipinnatifida
desert goosefoot Chenopodium pratericola
Emory's sedge Carex emoryi
Engelmann's daisy Engelmannia peristenia
lemon beebalm Monarda citriodora
Louisiana vetch Vicia ludoviciana
Madagascar dropseed Sporobolus pyramidatus
mat sandbur Cenchrus longispinus
matted sandmat Chamaesyce serpens
narrowleaf purple coneflower Echinacea angustifolia
narrowleaf stoneseed Lithospermum incisum
Nuttall's sensitive-briar Mimosa nuttallii
pale dock Rumex altissimus
pinkladies Oenothera speciosa
plains bluegrass Poa arida
prairie spiderwort Tradescantia occidentalis
prairie sunflower Helianthus petiolaris
Pursh seepweed Suaeda calceoliformis
redseed plantain Plantago rhodosperma
sand spikerush Eleocharis montevidensis
scarlet beeblossom Oenothera suffrutescens
showy evening primrose Oenothera grandis
silky prairie clover Dalea villosa
small Venus' looking-glass Triodanis biflora
spotted beebalm Monarda punctata
stemless evening primrose Oenothera triloba
tapertip cupgrass Eriochloa acuminata
Texas signalgrass Urochloa texana
Texas toadflax Nuttallanthus texanus
warty spurge Euphorbia spathulata
wavyleaf thistle Cirsium undulatum
western horsenettle Solanum dimidiatum

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, Tillman County and Oklahoma
Measure	Tillman County	Typical county	Statewide
Native species	63	203	1,513
Garden-ready natives	23	80	535
Tree	4	—	130
Shrub	0	—	63
Wildflower (forb)	44	—	849
Grass or grass-like	12	—	341
Vine	2	—	85
Fern	1	—	45

Neighboring counties

Counties that share a ZIP code with Tillman County.

Cotton County, OK 39 garden-ready
Kiowa County, OK 69 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: Tillman County (county FIPS 40141), Oklahoma. 63 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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