Grass or grass-like · Cyperaceae
Gray's sedge
Carex grayi
Gray's sedge is recorded as native to 25 states and territories in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in 507 counties of those states by USDA PLANTS.
Key facts · USDA PLANTS
Gray's sedge at a glance
- Native in
- 507 counties, across 25 states and territories
- Estimated cold hardiness
- Zone 4a PLANTS minimum temperature −33°F
- Mature height
- 3 ft PLANTS mature height
- Light and water
- Tolerates shade High water use
Estimated cold hardiness: zone 4a. PLANTS gives a minimum temperature of −33°F; zone 4a winters bottom out at −30°F, the coldest half-zone that stays within that limit.
Gray's sedge is recorded as native to 25 states and territories in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in 507 counties of those states by USDA PLANTS.
Counties where it is native
The 15 counties with the most ZIP codes among the 507 where it is listed.
Native counties by state
- Alabama 10 counties
- Arkansas 10 counties
- Connecticut statewide record
- District of Columbia 1 county
- Florida 2 counties
- Illinois 57 counties
- Indiana 64 counties
- Iowa 6 counties
- Kansas 10 counties
- Kentucky 34 counties
- Maryland 14 counties
- Massachusetts 4 counties
- Michigan 34 counties
- Minnesota 6 counties
- Mississippi 4 counties
- Missouri 51 counties
- New York 32 counties
- North Carolina 14 counties
- Ohio 44 counties
- Oklahoma 1 county
- Pennsylvania 31 counties
- South Carolina 4 counties
- Tennessee 23 counties
- Virginia 28 counties
- Wisconsin 23 counties
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
- 3 ft
- Growth rate
- Slow
- Growth form
- Bunch
- Shape
- Erect
- Lifespan
- Long
- Active growth period
- Spring and Summer
Light and water
- Shade tolerance
- Tolerant (tolerates shade)
- Moisture use
- High water use
- Drought tolerance
- Low
- Tolerance of waterlogged soil
- High
- Precipitation range
- 36 to 55 in per year
Soil
- Soil textures
- Medium and fine
- pH range
- 5.7 to 7.2
- Lime (CaCO₃) tolerance
- Medium
- Salinity tolerance
- None
- Fertility requirement
- Medium
- Minimum root depth
- 8 in
Climate
- Minimum temperature
- −33°F
- Estimated cold hardiness
- Zone 4a and warmer
- Minimum frost-free days
- 85
- Fire tolerance
- High
Flowers, leaves and fruit
- Flower color
- Green
- Showy flowers
- No
- Bloom period
- Late Spring
- Foliage color
- Green
- Showy in fall
- No
- Keeps leaves
- No
- Fruit color
- Brown
Other
- Toxicity
- None
- Nitrogen fixation
- None
- Nursery availability
- Routinely Available
- Family
- Cyperaceae
- PLANTS symbol
- CAGR5
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
- Carex grayi (PLANTS symbol CAGR5).
- 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