Annual ragweed (Ambrosia artemisiifolia)

Profile

Impact

Annual ragweed is an introduced weed from North America that invades roadsides, wastelands and poor or overgrazed pastures. The pollen from this plant is a major cause of hay fever and can aggravate asthma. Contact with the plant can also cause skin allergies.

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Control

Infestations can be minimised by maintaining healthy, dense pastures.

Biological control

Two biological control agents have been released for annual ragweed in New South Wales. A moth (Epiblema strenuana) is established and has a reasonable impact on annual ragweed. A beetle (Zygogramma bicolorata) is established and widespread, and has a significant impact at some sites.  

Herbicide options

Contact your local council weeds officer for control advice for Annual ragweed (Ambrosia artemisiifolia).

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Legal requirements

The content provided here is for information purposes only and is taken from the Noxious Weeds (Weed Control) Order 2014 published in the NSW Government Gazette, detailing weeds declared noxious in New South Wales, Australia, under the Noxious Weeds Act 1993. The Order lists the weed names, the control class and the control requirements for each species declared in a Local Control Authority area.

Area Class Legal requirements
All of NSW 5 Restricted Plant
The requirements in the Noxious Weeds Act 1993 for a notifiable weed must be complied with

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For technical advice and assistance with identification please contact your local council weeds officer.
For further information call the NSW Invasive Plants and Animals Enquiry Line on 1800 680 244 or send an email to weeds@dpi.nsw.gov.au

Reviewed 2014