Mimosa Pigra is a Weed of National Significance (WoNS) and regarded as one of the worst weeds in Australia because of its invasiveness, potential for spread, and economic and environmental impacts.
Mimosa forms dense stands that replace all native vegetation on the ecologically and economically valuable wetlands of the Top End of northern Australia.
Mimosa invasion threatens the production, cultural and conservation values of wetlands, reducing the scope for exploitation of resources by land users. Pastoralists are affected because the inedible and thorny weed smothers and replaces grasslands, blocks access to stock watering points and hinders mustering. Additionally, the harvesting of bush foods by indigenous people is hampered by Mimosa.
BHA has established a research program to identify potential biological agents for the control of Mimosa in Australia.