Bottom-rooted aquatic perennial. Rootstock is tuberous. Leaves are floating, linear and < 25 cm long. Flowers are white and borne on emergent spike above the water’s surface. Fruit is c. 1 cm long.
To help protect our environment:
Still or flowing water bodies < 1.2 m deep.
Seeds dispersed by water.
Potentially competes with native freshwater vegetation. Stems may entangle recreational equipment.
Follow up treated areas 3 times per year.
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.