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Squarestem Spikerush

Eleocharis quadrangulata

In the Carolinas and Georgia, found in pools, marshes. Weakley, Flora of the Southeastern United States (2025), Carolinas & Georgia edition What its natural habitat tells you

36
Good

Native to Louisiana (estimated). How scores work Is it native here?

Profile 94%

Height
2–3 feet
Spread
1–2 feet
Light
Full sun, Partial shade
Soil moisture
Moist to standing water

Space about 1.5 ft apart from its recorded spread, about 44 per 100 sq ft. Enter your bed size for a count

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At a glance

Life cycle
Perennial
Bloom
June to September
Fruiting season
Summer to fall

Not yet recorded · Leaves

Recorded in 25 Louisiana parishes.

Natural habitats

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

Freshwater marshes

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

All habitats

Ecological relationships

Who uses this plant?

What these records mean

6CaterpillarsGenus host records with ranges including LA

Genus host records with ranges including LA · Eleocharis

  • Bactra furfuranaRush Bactra
  • Cisseps fulvicollisYellow-Collared Scape Moth
  • Elophila obliteralisWaterlily Leafcutter Moth
  • Parapoynx allionealisWatermilfoil Leafcutter, Bladderwort Casemaker
  • Donacaula dispersella
  • Thopeutis forbesellus
Shropshire & Tallamy 2025, Lepidoptera of North America north of Mexico, ZooKeys 1261 (ODbL)
0BeesSoutheastern regional records
0Specialist beesPollen specialists
14BirdsRecorded genus food-resource interactions; not a state feeding claim

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

  • Agelaius phoeniceusRed-winged Blackbird
  • Anas creccaGreen-winged Teal
  • Anas rubripesAmerican Black Duck
  • Anser caerulescensSnow Goose
  • Antigone canadensisSandhill Crane
  • Aythya collarisRing-necked Duck
  • Branta canadensisCanada Goose
  • Dendrocygna bicolorFulvous Whistling-Duck
  • Fulica americanaAmerican Coot
  • Gallinula galeataCommon Gallinule
Show all 14
  • Mareca americanaAmerican Wigeon
  • Mareca streperaGadwall
  • Porzana carolinaSora
  • Spatula cyanopteraCinnamon Teal
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

No records yet · Ants · Beetles · Flies · Adult butterflies / moths · Other wasps · Other insects

Growing and identification

Plant details

Family
Cyperaceae
Hardiness
Zones 5a–9b
Soil pH
Acidic to neutral
Flower color
Brown/copper or orange
Growth rate
Moderate
Growth habit
Grows in clumps
Fruit begins
Summer
Fruit ends
Fall

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

Growing sources and scope
Also known as

Square Stem Spikerush

Conservation status

Louisiana rankSNR
Global rankG4
LA statusNot verified
Federal statusNot verified

Conservation source Global and federal source

In your garden

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Sources