Emergent aquatic perennial herb < 1 m tall. Stems are square. Leaves are < 8.5 x 3 cm and toothed. Flowers are small, white/pale pink/purple and borne in summer – autumn. Nutlets are minute and borne in summer – autumn.
To help protect our environment:
Water body margins, ditches, pasture, wasteland.
Seeds dispersed by water and livestock. Vegetative spread from stolons. Human-mediated dispersal through contamination of machinery and footwear.
Spreads rapidly and grows fast. Potential to displace native vegetation.
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.