Erect perennial rush < 35 cm tall. Rhizomes are extensive and tuberous. Stems are triangular. Flowers are borne in simple open umbels with few rays. Nuts are small and rarely reach maturity.
To help protect our environment:
Pasture, roadsides, wetlands, riparian margins, coastal areas, cropland, urban habitats.
Low production of viable seed. Vegetative spread from rhizomes and tubers, dispersed by water. Human-mediated dispersal through movement of contaminated soil.
Potential to outcompete native species in wetlands, riparian margins and coastal areas. Reduces crop yields. May hybridise with the closely related C. ustulatus.
Follow up treated areas 3 times per year. Encourage natural regeneration of native plants or replant treated areas where possible after 2-3 treatments to establish dense ground cover and minimise reinvasion.
CAUTION: When using any herbicide or pesticide please read the label thoroughly to ensure that all instructions and safety requirements are followed.