Plant Wiki

The open plant encyclopedia

Know any plant.
Grow it well.

Snap a photo or search by any name to see how to care for it, where it comes from, whether it's safe, and a 3D model you can turn.

  • 13,000+plants with full pages
  • 365,000+plant species worldwide
  • 220+countries covered

Common in

See all

The plants people record most in your country, and ones that grow there wild.

What do you want to do?

Popular plants

Browse all plants

See them in 3D

All plants in 3D

Browse plants

Filter by what you want to do, shape, origin, country, care and safety.

Plant Wiki › Browse plants

Three-rib arrowgrass

Triglochin striata

Also called Threerib Arrowgrass, Ribbed Arrowgrass, Three Ribbed Arrowgrass, Three Ribbed Arrow Grass

Three-rib arrowgrass
Photo: Harry Rose from Dungog, Australia, CC BY 2.0

Three-rib arrowgrass is a perennial grass-like marsh plant from the arrowgrass family, native to coastal and wetland habitats across several continents. It needs consistently moist or wet soil, so it suits pond margins, bog gardens or damp ground.

Family
Juncaginaceae (Juncagin family)
Grows as
Grass, Perennial
Light
Full sun, Part shade
Water
Keep the soil constantly moist or standing in shallow water.
Soil
Wet, muddy or heavy loam; tolerates some salinity.
Temperature
Tolerates a wide range, roughly 5–30 °C; protect from hard frost.
How easy
Easy
Native range
DR Congo to S. Africa, Australia, New Zealand, Tubuai (Rapa Iti), Trop. & Subtro
Climate
subtropical

About

Triglochin striata is a species of flowering plant in the family Juncaginaceae. It is native to New Zealand, South America, America, Africa, Australia and Southern Portugal.

It is a perennial with parallel lines on its narrow linear leaves, which gives rise to its common name streaked arrow grass. Other common names include three-rib arrowgrass and three-ribbed arrow-grass.

Where it grows

Triglochin striata's habitat is mainly coastal in damp muddy ground, salt marsh, estuaries, and damp seepages on coastal cliffs, boulder beaches and within damp coastal turf. It is also found inland around lake margins (in marginal turf communities) and in other suitable damp places, and sometimes even in tall forest.

Other Triglochin plants

Triglochin scilloides · Triglochin barrelieri · Bulb Arrowgrass · Triglochin calcitrapa · Gaspé Peninsula arrowgrass · Seaside arrowgrass · Triglochin minutissima · Triglochin mucronata · Triglochin muelleri · Marsh arrowgrass · Triglochin trichophora · Arrowgrass

Text excerpted from the Wikipedia article Triglochin striata by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.

Credits & terms

Identify a plant

Point at a leaf or flower and snap. One plant in frame works best.

Your photo
Starting camera…