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Native plants · Texas

Native plants of Irion County

44 plant species are recorded as native to Texas in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in Irion County by USDA PLANTS. 18 of them have growing records you can filter by light, moisture, height and estimated cold hardiness. 1 more species is listed as both native and introduced and kept in a separate section.

County summary · USDA PLANTS and Kew WCVP

Irion County, Texas

PLANTS records only 18 garden-ready natives here (under 30). County records are thin in some places; the Texas list is a useful second check.

Native species
44 Typical Texas county: 145 (median of 254 counties)
Garden-ready natives
18 Typical Texas county: 61
Share by type (all 44 native species)
Percent of the 44 native species in each growth type
Tree 2% (1)
Shrub 9% (4)
Wildflower (forb) 70% (31)
Grass or grass-like 16% (7)
Vine 2% (1)

Wildflowers make up the largest share of the native list (70%), followed by grasses and grass-like plants (16%).

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 8a (2023 map).

The native plant list

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

Garden-ready natives 18

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

Garden-ready native plants of Irion County, Texas
PlantType HeightLight Water useHardy to
broom snakeweed Gutierrezia sarothrae Shrub 1.5 ft Sun Medium Zone 3b
buffalograss Bouteloua dactyloides Grass or grass-like 6 in Sun Medium Zone 3b
false daisy Eclipta prostrata Wildflower (forb) 3.2 ft Sun–part shade Medium Zone 10b
featherplume Dalea formosa Shrub 3 ft Sun Low Zone 6a
golden currant Ribes aureum Shrub 10 ft Sun–part shade Low Zone 3b
little barley Hordeum pusillum Grass or grass-like 1.2 ft Sun Medium Zone 10b
littleleaf sumac Rhus microphylla Tree 10 ft Sun Low Zone 6a
lyreleaf greeneyes Berlandiera lyrata Wildflower (forb) 4 ft Sun Low Zone 5a
Missouri gourd Cucurbita foetidissima Vine 1 ft Sun Low Zone 5a
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
sideoats grama Bouteloua curtipendula Grass or grass-like 3 ft Sun Medium Zone 3a
soapweed yucca Yucca glauca Shrub 1 ft Sun Low Zone 4b
squirreltail Elymus elymoides Grass or grass-like 1.5 ft Sun Low Zone 3a
tobosagrass Pleuraphis mutica Grass or grass-like 2.3 ft Sun Low Zone 7b
white prairie clover Dalea candida Wildflower (forb) 2 ft Sun–part shade Medium Zone 3b
wild tantan Desmanthus virgatus Wildflower (forb) 2 ft Shade-tolerant Low Zone 9a
woolly locoweed Astragalus mollissimus Wildflower (forb) 2 ft Sun Low Zone 4b

Other native species recorded here 26

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
  • Carolina woollywhite Hymenopappus scabiosaeus
  • curvepod fumewort Corydalis curvisiliqua
  • Dakota mock vervain Glandularia bipinnatifida
  • diamond-flowers Stenaria nigricans
  • downy phlox Phlox pilosa
  • Drummond's false pennyroyal Hedeoma drummondii
  • Engelmann's daisy Engelmannia peristenia
  • groundplum milkvetch Astragalus crassicarpus
  • James' cryptantha Cryptantha cinerea
  • kiss me quick Portulaca pilosa
  • lacy tansyaster Machaeranthera pinnatifida
  • lemon beebalm Monarda citriodora
  • longleaf groundcherry Physalis longifolia
  • meadow garlic Allium canadense
  • mealy goosefoot Chenopodium incanum
  • prairie broomweed Amphiachyris dracunculoides
  • prairie tea Croton monanthogynus
  • prostrate sandmat Chamaesyce prostrata
  • shaggy dwarf morning-glory Evolvulus nuttallianus
  • Texas bluegrass Poa arachnifera
  • toothed spurge Euphorbia dentata
  • velvetweed Oenothera curtiflora
  • wavyleaf thistle Cirsium undulatum
  • western tansymustard Descurainia pinnata
  • whitemouth dayflower Commelina erecta
Also listed as native and introduced here 1

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.

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, Irion County and Texas
MeasureIrion CountyTypical countyStatewide
Native species 44 145 1,683
Garden-ready natives 18 61 656
Tree 1 — 164
Shrub 4 — 90
Wildflower (forb) 31 — 877
Grass or grass-like 7 — 431
Vine 1 — 83
Fern 0 — 38

Neighboring counties

Counties that share a ZIP code with Irion 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
Irion County (county FIPS 48235), Texas. 44 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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