Perennial rhizomatous herb < 1.5 m tall. Leaves are sword-shaped and arise in fan-like arrangement from base of plant. Flowers are yellow, < 12 cm in diameter and borne on erect stalks in September – December. Seed capsules are green and contain dark brown disk-shaped seeds.
To help protect our environment:
Wetlands, damp ground, pasture, shallow margins of still and slow-moving water bodies.
Seeds dispersed by wind and water. Vegetative spread from rhizomes, dispersed by water. Human-mediated dispersal through contamination of machinery and deliberate plantings.
Forms dense mats, displacing vegetation. Accumulates sediment, altering stream flow and morphology. Impedes pasture drainage and is poisonous to livestock.
Follow up treated areas 3 times per year.
CAUTION: When using any herbicide or pesticide please read the label thoroughly to ensure that all instructions and safety requirements are followed.