Evergreen perennial with woody rhizomes. Leaves are < 40 cm long, erect and often in a flattened fan. Flowers are blue and borne in clusters of 5-7. Capsules are dehiscent and three-sided, with dark red-brown seeds.
To help protect our environment:
Open and disturbed sites, roadsides, forest, scrubland, coastlines, herbfields, rocky and bare sites.
Seeds dispersed by water. Vegetative spread from rhizomes, dispersed by water. Human-mediated dispersal through contaminated soil on footwear and machinery.
Forms dense stands, preventing native seedling establishment. May facilitate introduced shrub, vine and grass succession in forests.
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.