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Umbrella Flat Sedge

Cyperus diandrus

In the Carolinas and Georgia, found in interdune swales, ponds, exposed river and lake shores, usually where seasonally ponded. Weakley, Flora of the Southeastern United States (2025), Carolinas & Georgia edition What its natural habitat tells you

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Not scored

Native status unresolved in Arkansas. How scores work Is it native here?

Profile 71%

Height
Up to about 1 foot
Light
Full sun
Soil moisture
Wet to standing water
Will it fit your yard?

At a glance

Life cycle
Annual
Bloom
July to October

Not yet recorded · Spread · Leaves

County records are not available.

Natural habitats

Places it grows wild. Not a planting requirement. Each habitat page lists the plants and wildlife also found there.

Ponds, lakes and their shores

Still water and its edges: ponds, lakes, millponds and reservoirs.

All habitats

Ecological relationships

Who uses this plant?

What these records mean

6CaterpillarsGenus host records with ranges including AR

Genus host records with ranges including AR · Cyperus

  • Bactra verutanaJavelin Moth
  • Diploschizia impigritellaYellow Nutsedge Moth
  • Elasmopalpus lignosellaLesser Cornstalk Borer
  • Euphyes vestrisDun Skipper, Dun Sedge Skipper, Sedge Witch)\
  • Globia oblongaOblong Sedge Borer Moth, Large Noagria
  • Spodoptera frugiperdaFall Armyworm Moth
Shropshire & Tallamy 2025, Lepidoptera of North America north of Mexico, ZooKeys 1261 (ODbL)
—BeesSoutheastern regional records
—Specialist beesPollen specialists
22BirdsRecorded genus food-resource interactions; not a state feeding claim

Recorded genus food-resource interactions; not a state feeding claim · Cyperus

  • Agelaius phoeniceusRed-winged Blackbird
  • Anas acutaNorthern Pintail
  • Anser albifronsGreater White-fronted Goose
  • Antigone canadensisSandhill Crane
  • Aythya affinisLesser Scaup
  • Aythya collarisRing-necked Duck
  • Aythya valisineriaCanvasback
  • Callipepla californicaCalifornia Quail
  • Colinus virginianusNorthern Bobwhite
  • Columbina passerinaCommon Ground Dove
Show all 22
  • Cyrtonyx montezumaeMontezuma Quail
  • Dendrocygna bicolorFulvous Whistling-Duck
  • Falcipennis canadensisSpruce Grouse
  • Gallinula galeataCommon Gallinule
  • Mareca americanaAmerican Wigeon
  • Mareca streperaGadwall
  • Meleagris gallopavoWild Turkey
  • Molothrus aterBrown-headed Cowbird
  • Pooecetes gramineusVesper Sparrow
  • Porzana carolinaSora
  • Spizella pusillaField Sparrow
  • Tympanuchus pallidicinctusLesser Prairie-Chicken
Hurlbert, Olsen, Sawyer & Winner 2021, Avian Diet Database, Scientific Data 8: 260 (CC0)

Direct food only: birds recorded eating this genus across North America. Caterpillars on host plants also feed nesting birds. NC Native Plant Society: butterfly gardening

Growing and identification

Plant details

Family
Cyperaceae
Flower color
Not applicable

Safety has not been reviewed for this plant; check toxicity and thorns before planting.

Growing sources and scope

Conservation status

Arkansas rankSNR
Global rankNot available
AR statusNot verified
Federal statusNot verified

Conservation source

In your garden

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Sources