Foul-smelling, perennial, annual or biennial herb < 2.5 m tall. Taproot is thick. Stems are smooth, hollow, branching and spotted or streaked, with a red/purple lower half. Leaves are < 50 x 40 cm, pinnate, fern-like, lacy and triangular. Flowers are small, white and borne in umbels.
To help protect our environment:
Damp areas, swamps, roadsides, riparian areas, forest margins, pasture, ditches, wasteland.
Seeds dispersed by wind, water and attachment to animal pelts. Human-mediated dispersal through contamination of clothing, machinery, gravel and soil.
Acutely poisonous and poses severe health risks to humans, livestock and native fauna. Can cause fatality.
Will quickly become succeeded by taller native species so only control in open or sensitive areas. If spraying remove all stock from the area as the plant material will become palatable after spraying. 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.