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New South Wales Department of Primary Industries subsite home
Home »  Agriculture  »  Pest and weeds management  »  Weeds  »  Species information

Weeds

Weed profile: Siam weed

Siam weed

Siam weed

Siam weed

Chromolaena odorata

Siam weed, also known as Chromolaena, is recognised as one of the world’s worst tropical weeds. It has an extremely fast growth rate (up to 20 mm per day) and prolific seed production.

Status

  • Declared in NSW under the Noxious Weeds Act 1993 (view details)
  • National Environmental Alert List weed (definition)

Related publications

Title
Siam weed (Weed Alert)  176.4 kb
Siam weed (Weed management guide, www.weedscrc.org.au)  
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