Grass or grass-like · Poaceae
Wrinkled jointtail grass
Coelorachis rugosa
Wrinkled jointtail grass is recorded as native to 13 states and territories in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in 100 counties of those states by USDA PLANTS.
Key facts · USDA PLANTS
Wrinkled jointtail grass at a glance
- Native in
- 100 counties, across 13 states and territories
- Estimated cold hardiness
- Zone 6b PLANTS minimum temperature −8°F
- Mature height
- 2 ft PLANTS mature height
- Light and water
- Sun to part shade Medium water use
Estimated cold hardiness: zone 6b. PLANTS gives a minimum temperature of −8°F; zone 6b winters bottom out at −5°F, the coldest half-zone that stays within that limit.
Wrinkled jointtail grass is recorded as native to 13 states and territories in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in 100 counties of those states by USDA PLANTS.
Counties where it is native
The 15 counties with the most ZIP codes among the 100 where it is listed.
Native counties by state
- Alabama 1 county
- Arkansas 3 counties
- Delaware 1 county
- Florida 39 counties
- Georgia 15 counties
- Louisiana 13 counties
- Maryland 4 counties
- Mississippi 5 counties
- New Jersey 2 counties
- North Carolina 4 counties
- South Carolina 6 counties
- Texas 6 counties
- Virginia 1 county
Growing traits
Values from the PLANTS characteristics record. “Not recorded” means PLANTS has no value; nothing here is estimated except the zone.
Growth
- Growth habit
- Graminoid
- Duration
- Perennial
- Mature height
- 2 ft
- Growth rate
- Moderate
- Growth form
- Bunch
- Shape
- Erect
- Lifespan
- Moderate
- Active growth period
- Spring and Summer
Light and water
- Shade tolerance
- Intermediate (sun to part shade)
- Moisture use
- Medium water use
- Drought tolerance
- Low
- Tolerance of waterlogged soil
- Low
- Precipitation range
- 45 to 80 in per year
Soil
- Soil textures
- Medium and fine
- pH range
- 5 to 7
- Lime (CaCO₃) tolerance
- None
- Salinity tolerance
- None
- Fertility requirement
- Low
- Minimum root depth
- 6 in
Climate
- Minimum temperature
- −8°F
- Estimated cold hardiness
- Zone 6b and warmer
- Minimum frost-free days
- 150
- Fire tolerance
- None
Flowers, leaves and fruit
- Flower color
- White
- Showy flowers
- No
- Bloom period
- Late Summer
- Foliage color
- Green
- Showy in fall
- No
- Keeps leaves
- No
- Fruit color
- Brown
Other
- Toxicity
- None
- Nitrogen fixation
- None
- Nursery availability
- No Known Source
- Family
- Poaceae
- PLANTS symbol
- CORU3
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.
- Scope
- Coelorachis rugosa (PLANTS symbol CORU3).
- 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