Sturdy, perennial, bamboo-like grass. Rhizomes are thick, lumpy and spread in continuous clumps < 1 m thick. Stems are spreading, clumping and < 6 m tall. Leaves are maize-like, sharp-edged, < 60 x 5 cm and opposite. Flowers are borne in large, fluffy, purplish turning to silver inflorescences.
To help protect our environment:
Riparian and forest margins, wetlands, saltmarshes, gullies, dunes, roadsides.
Seeds dispersed by wind. Vegetative spread from rhizomes, rhizome fragments and stem layering.
Forms dense stands and displaces native vegetation. Alters hydrology by blocking water flow. Impedes drainage and exacerbates flooding in agricultural systems.
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.
Do not attempt to undertake control of this species on Aotea/Great Barrier Island group. Please report to Auckland Council if seen on Aotea/Great Barrier Island group.
CAUTION: When using any herbicide or pesticide please read the label thoroughly to ensure that all instructions and safety requirements are followed.