Mimosa (Mimosa pigra)
Mature mimosa seedpods
In accordance with the NT Weeds Management Act 2001 mimosa is declared as
•
Class A - South of 14 ° S latitude - (to be eradicated)
• Class B - North of 14 ° S latitude - (spread to be controlled)
• Class C - Whole of the NT (not to be introduced to the NT)
| Mimosa Best Practice Management Guide | |
|---|---|
Introduction |
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| Biology |
1.4Mb |
| Managing Mimosa |
4.5Mb |
| Choosing a Control Program |
319Kb |
| Case studies |
2.2Mb |
| Further Information | 646Kb |
Mimosa is a Weed of National Significance. It forms dense and thorny, monospecific thickets which are inaccessible to humans and animals. In the NT mimosa is particularly invasive on floodplains, wetlands and riparian habitats, consequently areas currently affected or threatened by mimosa have high cultural, ecological and economic values.
Mimosa has become well established in many river systems across the Top End of the NT, including the Fitzmaurice, Daly, Reynolds, Finniss, Adelaide, Mary and the East & South Alligator Rivers. Smaller, satellite infestations have been found on the Arafura Swamp in Arnhem Land, Melville Island, Croker Island and on the Phelps River.
Mimosa reproduces via seeds. A single plant can produce in excess of 200,000 seeds annually. These tiny seeds can then be spread by water, machinery, vehicles, animals and people. Most seeds will germinate with first rains, however the seed's tough outer coating means the seed can remain dormant for many years (up to 20 years in sandy soils).
A strategic, integrated and collaborative approach to mimosa management is essential. Extensive projects have been implemented involving Indigenous land managers, the pastoral sector and the NT Government. A range of biological control agents have been released as part of an integrated management program in the NT, some of which have proven very successful.
Mimosa flower
