Natives by ZIP

Native plants recorded in your state and county

Native plants · Texas

Native plants of Rockwall County

47 plant species are recorded as native to Texas in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in Rockwall 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

Rockwall County, Texas

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

Native species
47 Typical Texas county: 145 (median of 254 counties)
Garden-ready natives
23 Typical Texas county: 61
Share by type (all 47 native species)
Percent of the 47 native species in each growth type
Tree 6% (3)
Wildflower (forb) 43% (20)
Grass or grass-like 43% (20)
Vine 9% (4)

Wildflowers make up the largest share of the native list (43%), followed by grasses and grass-like plants (43%).

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

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

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 Rockwall County, Texas
PlantType HeightLight Water useHardy 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
buffalograss Bouteloua dactyloides Grass or grass-like 6 in Sun Medium Zone 3b
climbing hempvine Mikania scandens Vine 1 ft Shade-tolerant Medium Zone 3b
composite dropseed Sporobolus compositus Grass or grass-like 3 ft Sun Low Zone 3b
fall panicgrass Panicum dichotomiflorum Grass or grass-like 3.3 ft Sun High Zone 3a
foxglove beardtongue Penstemon digitalis Wildflower (forb) 4 ft Shade-tolerant Low Zone 3b
fragrant flatsedge Cyperus odoratus Grass or grass-like 2 ft Sun Medium Zone 11b
green hawthorn Crataegus viridis Tree 30 ft Sun High Zone 5a
hairy grama Bouteloua hirsuta Grass or grass-like 6 in Sun Low Zone 3b
hardstem bulrush Schoenoplectus acutus Grass or grass-like 9.8 ft Sun High Zone 3b
honeylocust Gleditsia triacanthos Tree 70 ft Sun Medium Zone 3b
Illinois bundleflower Desmanthus illinoensis Wildflower (forb) 3 ft Sun Medium Zone 5b
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
limestone wild petunia Ruellia strepens Wildflower (forb) 3.6 ft Shade-tolerant Low Zone 6a
plains lovegrass Eragrostis intermedia Grass or grass-like 2.7 ft Sun Low Zone 5a
prairie cordgrass Spartina pectinata Grass or grass-like 8 ft Sun High Zone 3b
rufous bulrush Scirpus pendulus Grass or grass-like 4 ft Sun Medium Zone 3b
sideoats grama Bouteloua curtipendula Grass or grass-like 3 ft Sun Medium Zone 3a
switchgrass Panicum virgatum Grass or grass-like 5 ft Sun Medium Zone 3a
whitegrass Leersia virginica Grass or grass-like 3.9 ft Shade-tolerant Medium Zone 3a
woolgrass Scirpus cyperinus Grass or grass-like 4.9 ft Sun–part shade High Zone 4a

Other native species recorded here 24

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.

  • annual marsh elder Iva annua
  • branched foldwing Dicliptera brachiata
  • Carolina larkspur Delphinium carolinianum
  • Carolina woollywhite Hymenopappus scabiosaeus
  • diamond-flowers Stenaria nigricans
  • golden zizia Zizia aurea
  • groundplum milkvetch Astragalus crassicarpus
  • hairyfruit chervil Chaerophyllum tainturieri
  • hairyseed paspalum Paspalum pubiflorum
  • Juda's bush Iresine rhizomatosa
  • Louisiana vetch Vicia ludoviciana
  • matted sandmat Chamaesyce serpens
  • Maximilian sunflower Helianthus maximiliani
  • meadow garlic Allium canadense
  • pink thoroughwort Fleischmannia incarnata
  • prairie cupgrass Eriochloa contracta
  • rough dropseed Sporobolus clandestinus
  • sand spikerush Eleocharis montevidensis
  • scaldweed Cuscuta gronovii
  • Texas star Sabatia campestris
  • Virginia pepperweed Lepidium virginicum
  • warty spurge Euphorbia spathulata
  • whitestar Ipomoea lacunosa
  • witchgrass Panicum capillare

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, Rockwall County and Texas
MeasureRockwall CountyTypical countyStatewide
Native species 47 145 1,683
Garden-ready natives 23 61 656
Tree 3 — 164
Shrub 0 — 90
Wildflower (forb) 20 — 877
Grass or grass-like 20 — 431
Vine 4 — 83
Fern 0 — 38

Neighboring counties

Counties that share a ZIP code with Rockwall 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
Rockwall County (county FIPS 48397), Texas. 47 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

Independent reference site. No government affiliation or endorsement.