Perennial shrub < 3 m tall. Leaves are < 18 x 8 mm and reduced to phyllodes. Spines are stiff and < 1 cm long. Flowers are yellow and borne in inflorescences in July – October. Seedpods are < 60 x 4 mm.
To help protect our environment:
Open or disturbed sites, roadsides, farms, scrubland, banks, coastal areas, forest margins, wastelands.
Seeds dispersed by gravity, pods possibly dispersed by water movement. Human-mediated dispersal through deliberate plantings.
Forms dense stands, potentially excluding native vegetation. Nitrogen fixer. May alter soil fertility, nutrient cycling dynamics and plant community compositions.
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.
Do not attempt to undertake control of this species on Aotea/Great Barrier Island group. Please report to Auckland Council if seen on Aotea/Great Barrier Island group.
CAUTION: When using any herbicide or pesticide please read the label thoroughly to ensure that all instructions and safety requirements are followed.