Grass or grass-like · Cyperaceae
Haspan flatsedge
Cyperus haspan
Haspan flatsedge is recorded as native to 11 states and territories in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in 242 counties of those states by USDA PLANTS.
Key facts · USDA PLANTS
Haspan flatsedge at a glance
- Native in
- 242 counties, across 11 states and territories
- Estimated cold hardiness
- Zone 8a PLANTS minimum temperature 7°F
- Mature height
- 3.2 ft PLANTS mature height
- Light and water
- Full sun (shade-intolerant) Medium water use
Estimated cold hardiness: zone 8a. PLANTS gives a minimum temperature of 7°F; zone 8a winters bottom out at 10°F, the coldest half-zone that stays within that limit.
Haspan flatsedge is recorded as native to 11 states and territories in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in 242 counties of those states by USDA PLANTS.
Counties where it is native
The 15 counties with the most ZIP codes among the 242 where it is listed.
Native counties by state
- Alabama 9 counties
- Florida 64 counties
- Georgia 14 counties
- Louisiana 37 counties
- Mississippi 14 counties
- North Carolina 22 counties
- South Carolina 21 counties
- Tennessee 1 county
- Texas 34 counties
- Virginia 8 counties
- Puerto Rico 18 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
- 3.2 ft
- Growth rate
- Moderate
- Growth form
- Bunch
- Shape
- Erect
- Lifespan
- Long
- Active growth period
- Spring
Light and water
- Shade tolerance
- Intolerant (full sun (shade-intolerant))
- Moisture use
- Medium water use
- Drought tolerance
- Low
- Tolerance of waterlogged soil
- Medium
- Precipitation range
- 35 to 60 in per year
Soil
- Soil textures
- Coarse, medium and fine
- pH range
- 4.5 to 7.5
- Lime (CaCO₃) tolerance
- Medium
- Salinity tolerance
- High
- Fertility requirement
- Medium
- Minimum root depth
- 16 in
Climate
- Minimum temperature
- 7°F
- Estimated cold hardiness
- Zone 8a and warmer
- Minimum frost-free days
- 230
- Fire tolerance
- Medium
Flowers, leaves and fruit
- Flower color
- Brown
- Showy flowers
- No
- Bloom period
- Late Spring
- Foliage color
- Green
- Showy in fall
- No
- Keeps leaves
- No
- Fruit color
- White
Other
- Toxicity
- None
- Nitrogen fixation
- None
- Nursery availability
- Routinely Available
- Family
- Cyperaceae
- PLANTS symbol
- CYHA
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
- Cyperus haspan (PLANTS symbol CYHA).
- 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