Cyperus rotundusBack to index icon.

Graphic of Cyperus rotundus.

Sounds like:

FAMILY:

CYPERACEAE

Genus:

Cyperus

species:

rotundus

Common name:

Nut grass


Life form:

 

checked box herb unchecked box grass unchecked box climber unchecked box shrub unchecked box tree


Additional:

 

unchecked box annual unchecked box biennial checked box perennial unchecked box bulbous checked box rhizome
unchecked box aquatic unchecked box woody


Origin:

Pantropical including northern Australia.

Stem:

Up to 0.6m, 3-angled and ribbed.

Leaves:

Thin, short, dark green grass-like leaves with loose jacket casing at base.

Flowers:

Brown flowers in spikelet clusters that appear in summer.

Roots:

Fibrous roots with rhizomes and tubers.

Other characteristics:

One of the world's worst weeds in agriculture. Usually a weed of disturbed wetlands.

Spread:

Tubers, rhizomes and seed (seeds do not always mature).

Control:

Weeding by removing all rhizomes. Herbicide spray.