*Phalaris aquatica

Family Poaceae


Erect tufted perennial grass to 1.5 m high, with hard crown of usually contracted rhizomes.

Flowers: Spring, wind pollinated.

Fruit: Dry, single seeded, indehiscent.

Seed: No specialised mechanism for dispersal.

Gallery images: seed, seedling, rootstock, resprout


  • Native to the Mediterranean region. Introduced as pasture species.
  • Weed of grasslands.
  • Common weed in grassland at the Australian Botanic Garden.

Asterisk * indicates exotic species naturalised at the Australian Botanic Garden.

Ecology of Cumberland Plain Woodland

Phalaris aquatica plant

Phalaris aquatica flower

Phalaris aquatica fruit