New weed management plan Siam weed 2025 - 2035
Siam weed (Chromolaena odorata) is known to be one of the most aggressive and damaging tropical weed species worldwide.
It has a phenomenal growth rate, leaves are toxic to livestock and moderate levels of consumption can lead to aborted calves and in extreme cases death.
A new statutory weed management plan Siam weed 2025 - 2035 has been developed under the weeds management Act 2001. This plan outlines the legal requirements for managing Siam weed in the NT for landholders with Siam weed on their land.
This plan has been developed after Siam weed was detected growing in the NT in 2019. Since this time the Weed Management Branch (WMB) have responded to the detection of Siam weed, initially through an emergency response under the Biosecurity Incident Management System (BIMS) with the aim of eradicating Siam weed from the NT. This response was later downgraded to a transition to ongoing management after further detections of Siam weed in the NT and eradication was no longer considered feasible across the whole NT. Throughout this time the WMB have continued to work closely with landholders with Siam weed on their land to help with the management of this weed, largely through several federally funded project grants.
Requirements in the new plan focus on:
- Outlier areas - includes requirements to destroy all plants with the aim of eradicating Siam weed from these areas.
- Core areas - the area where eradication is not considered feasible and requirements aim to contain Siam weed and not let it spread further.
Landholders with Siam weed on their land need to comply with the requirements in the new weed management plan Siam weed 2025 - 2035.
For everyone else - keep a look out for this weed and if you spot it - report it at Northern Territory Government website.
The new weed management plan Siam weed 2025 – 2035 can be found online.
For more information on how to identify Siam weed, go to nt.gov.au/siamweed.
