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Three-rib Arrowgrass

Triglochin striata

Also listed as Triglochin striatum

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

12
Modest

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

Profile 94%

Height
Up to about 1.25 feet
Light
Full sun
Soil moisture
Wet to standing water
Will it fit your yard?

Rare or protected plant. Specialist conservation planting; excluded from routine garden suggestions. Plant caution source

Hidden from default planting suggestions. Wildlife value and native status remain unchanged.

At a glance

Life cycle
Perennial
Bloom
May to October

Not yet recorded · Spread · Leaves

Recorded in 1 Louisiana parish.

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

0CaterpillarsGenus host records with ranges including LA
0BeesSoutheastern regional records
0Specialist beesPollen specialists
4BirdsRecorded genus food-resource interactions; not a state feeding claim

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

  • Anser albifronsGreater White-fronted Goose
  • Anser caerulescensSnow Goose
  • Branta canadensisCanada Goose
  • Coturnicops noveboracensisYellow Rail
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
Juncaginaceae
Flower color
White or green
Growing sources and scope
Also known as

Three rib Arrowgrass; Triglochin striatum

Conservation status

Louisiana rankS1
Global rankG5
LA statusNot verified
Federal statusNot verified

Conservation source Global and federal source

In your garden

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Sources