Perennial ragweed
Ambrosia spp.
Weed profile
Perennial
Herb
Shrub
Allergenic- Habitat: pastures
Impact
Invades roadsides, creek banks and pasture. Allergenic.
Description
- Perennial herb to 2 m tall from a woody rootstock.
- Erect stems, deeply divided aromatic leaves.
- Elongated spikes of greenish-yellow, cup-shaped flower heads.
Control options
dicamba (500g/L)
Application Method: Boom spray
Application Rate: 8.8L/ha
Product Name: Kamba 500®
Herbicide Group: 4
Situation: Non-crop situations.
Timing: Boom spray, while actively growing.
Comments: Use at least 1500 L/ha water. Do not apply to crops or legume-based pastures.
Legal Status: Registered
dicamba (500g/L)
Application Method: Spot spray
Application Rate: 600mL/100L
Product Name: Kamba 500®
Herbicide Group: 4
Situation: Non-crop situations.
Timing: Spot spray, while actively growing.
Comments: Do not apply to crops or legume-based pastures.
Legal Status: Registered
Manual removal
Situation: Any
Timing: Any time
Comments: Grub individual plants. Obtain advice from your regional landscape board.
Legal requirements in each region
Land owners in this region to take reasonable steps to kill plants and prevent their spread. Enforceable by the Alinytjara Wiluṟara Landscape Board.
Must not be sold or traded in any way, including as a contaminant of anything.
Must not be transported on a public road, including as a contaminant of anything.
Land owners in this region to take reasonable steps to kill plants and prevent their spread. Enforceable by the Eyre Peninsula Landscape Board.
Must not be sold or traded in any way, including as a contaminant of anything.
Must not be transported on a public road, including as a contaminant of anything.
Land owners in this region to take reasonable steps to kill plants and prevent their spread. Enforceable by the Green Adelaide Board.
Must not be sold or traded in any way, including as a contaminant of anything.
Must not be transported on a public road, including as a contaminant of anything.
Land owners in this region to take reasonable steps to kill plants and prevent their spread. Enforceable by the Hills and Fleurieu Landscape Board.
Must not be sold or traded in any way, including as a contaminant of anything.
Must not be transported on a public road, including as a contaminant of anything.
Land owners in this region to take reasonable steps to kill plants and prevent their spread. Enforceable by the Kangaroo Island Landscape Board.
Must not be sold or traded in any way, including as a contaminant of anything.
Must not be transported on a public road, including as a contaminant of anything.
Land owners in this region to take reasonable steps to kill plants and prevent their spread. Enforceable by the Limestone Coast Landscape Board.
Must not be sold or traded in any way, including as a contaminant of anything.
Must not be transported on a public road, including as a contaminant of anything.
Land owners in this region to take reasonable steps to kill plants and prevent their spread. Enforceable by the Murraylands and Riverland Landscape Board.
Must not be sold or traded in any way, including as a contaminant of anything.
Must not be transported on a public road, including as a contaminant of anything.
Land owners in this region to take reasonable steps to kill plants and prevent their spread. Enforceable by the Northern and Yorke Landscape Board.
Must not be sold or traded in any way, including as a contaminant of anything.
Must not be transported on a public road, including as a contaminant of anything.
Land owners in this region to take reasonable steps to kill plants and prevent their spread. Enforceable by the South Australian Arid Lands Landscape Board.
Must not be sold or traded in any way, including as a contaminant of anything.
Must not be transported on a public road, including as a contaminant of anything.
More Information
Find out how to:
- benefit from the early intervention of new and emerging weeds - handbook
- best manage your use and storage of agricultural and veterinary chemicals.
Control advice
For further help and advice managing this weed contact your regional landscape board: