States
North CarolinaTennesseeGeorgiaSouth CarolinaKentuckyAlabamaArkansasFloridaLouisianaMississippiVirginiaWest Virginia
Menu

Common Three Square Bulrush

Schoenoplectus pungens var. pungens

In the Carolinas and Georgia, found in tidal marshes, other marshes, inland salt marshes, rocky river beds, wet meadows, lake edges, moist fields. Weakley, Flora of the Southeastern United States (2025), Carolinas & Georgia edition What its natural habitat tells you

—
Not scored

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

Profile 71%

Height
Up to about 6 feet
Light
Full sun
Soil moisture
Wet to standing water
Will it fit your yard?

At a glance

Life cycle
Perennial
Bloom
May to June
Fruiting season
June to September

Not yet recorded · Spread · Leaves

Recorded in 7 Arkansas counties.

Natural habitats

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

1 of 4

Freshwater marshes

Open, herb-covered wetlands with fresh, non-tidal water.

Wet meadows

Open, wet, grassy or sedgy ground that is not a bog.

Ponds, lakes and their shores

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

Roadsides, fields and disturbed ground

Ground opened by people: roadsides, old fields, pastures, fencerows and lots.

All habitats

Ecological relationships

Who uses this plant?

What these records mean

7CaterpillarsGenus host records with ranges including AR

Genus host records with ranges including AR · Scirpus

  • Apamea sordensBordered Apamea, Rustic Shoulder-Knot
  • Bactra furfuranaRush Bactra
  • Bactra verutanaJavelin Moth
  • Euphyes dionDion Skipper, Sedge Skipper
  • Globia oblongaOblong Sedge Borer Moth, Large Noagria
  • Ledaea perditalisLost Owlet, 3-Stripe Cephalanthus caterpillar, Buttonbush Owlet
  • Donacaula dispersella
Shropshire & Tallamy 2025, Lepidoptera of North America north of Mexico, ZooKeys 1261 (ODbL)
—BeesSoutheastern regional records
—Specialist beesPollen specialists
27BirdsRecorded genus food-resource interactions; not a state feeding claim

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

  • Agelaius phoeniceusRed-winged Blackbird
  • Anas platyrhynchosMallard
  • Anthus rubescensAmerican Pipit
  • Aythya affinisLesser Scaup
  • Aythya americanaRedhead
  • Aythya collarisRing-necked Duck
  • Aythya marilaGreater Scaup
  • Aythya valisineriaCanvasback
  • Bucephala clangulaCommon Goldeneye
  • Bucephala islandicaBarrow's Goldeneye
Show all 27
  • Calcarius lapponicusLapland Longspur
  • Calcarius pictusSmith's Longspur
  • Cygnus buccinatorTrumpeter Swan
  • Cygnus columbianusTundra Swan
  • Fulica americanaAmerican Coot
  • Gallinula galeataCommon Gallinule
  • Loxia curvirostraRed Crossbill
  • Mareca americanaAmerican Wigeon
  • Mareca streperaGadwall
  • Molothrus aterBrown-headed Cowbird
  • Oxyura jamaicensisRuddy Duck
  • Plectrophenax nivalisSnow Bunting
  • Porzana carolinaSora
  • Rallus limicolaVirginia Rail
  • Spatula cyanopteraCinnamon Teal
  • Spizelloides arboreaAmerican Tree Sparrow
  • Sturnus vulgarisEuropean Starling
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
Blue
Fruit begins
June
Fruit ends
September

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

Growing sources and scope
Also known as

Chairmakers Rush

Conservation status

Arkansas rankSNR
Global rankNot available
AR statusNot verified
Federal statusNot verified

Conservation source

In your garden

Will it fit your yard?

Check this plant against your county, sun and soil moisture. Conditions are checked in your browser.

Choose a county to begin.

How to check your spot

Sources