Annual or biennial thistle. Taproot is long and fleshy. Leaves are long, narrow and spiny. Flowers are drooping, purple and borne on erect flower stems in spring – summer. Seeds are attached to pappus.
To help protect our environment:
Pasture, wasteland, roadsides.
Seeds dispersed by wind, soil movement. Human-mediated dispersal through movement of contaminated soil, machinery and agricultural materials.
Suppresses valued pasture plants and impedes livestock access to forage. Allelopathic.
Maintaining good pasture cover can prevent establishment or suppress an infestation. Prevent overgrazing especially in summer. Other herbicides are available for selective use in pasture.
CAUTION: When using any herbicide or pesticide please read the label thoroughly to ensure that all instructions and safety requirements are followed.