Many-branched perennial shrub < 3 m tall. Stems bear spines < 4 cm long. Leaves comprise three leaflets < 12 mm long. Flowers are yellow, < 15 mm long and borne in spring – summer. Seed pods are < 4 cm long, flattened and hairless, with a small spine at the tip.
To help protect our environment:
Rocky soils, grassland, pasture, open woodland, roadsides, disturbed areas, wasteland.
Seeds dispersed by explosive dehiscence and contaminated soil on animals. Human-mediated dispersal through contaminated soil on machinery and vehicles and dumping of garden waste.
Forms dense stands, excluding and competing with native vegetation. May reduce pasture grazing potential and outcompete plantation tree seedlings. Nitrogen fixer. May facilitate other exotic species.
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.