Black knapweed (Centaurea X moncktonii) ![Black knapweed](https://www.dpi.nsw.gov.au/__data/assets/image/0010/156583/knapweed.jpg)
This plant: - is listed in the Biosecurity Act as Prohibited Matter, meaning you MUST report it.
- is a serious crop weed.
- is not yet present in NSW.
Actions: - Keep an eye out if your feed or fodder is coming from Victoria.
- You must report this plant if you see it anywhere in NSW. 1800 680 244
Full profile: Black knapweed. | Broomrapes (Orobanche species) ![Boomrape](https://www.dpi.nsw.gov.au/__data/assets/image/0003/156477/boomrape.jpg)
These plants are: - listed in the Biosecurity Act as Prohibited Matter, meaning you MUST report them.
- a serious parasitic crop weed.
- not yet present in NSW.
The Murray Bridge area of SA is the only known site to have had these plants and it is considered eradicated. Actions: - Keep an eye out for this plant, particularly if your feed or fodder is from SA.
- You must report these plants if you see them anywhere in NSW.
1800 680 244
Full profile: Broomrapes | Gamba grass (Andropogon gayanus) This plant :
- is listed in the Biosecurity Act as Prohibited Matter, meaning you MUST report it.
- is a Weed of National Significance.
- is a highly invasive grass.
- is not yet present in NSW.
Actions: - Keep an eye out if your feed or fodder is coming from QLD and/or NT.
- You must report this plant if you see it anywhere in NSW. 1800 680 244
Full profile: Gamba grass |
Mexican feather grass (Nassella tenuissima) ![](https://www.dpi.nsw.gov.au/__data/assets/image/0004/156154/mexican-feather-grass.jpg) This plant:
- is listed in the Biosecurity Act as Prohibited Matter, meaning you MUST report it.
- is a highly invasive grass
- was found for sale in NSW nurseries 2008, but is not present in NSW.
Actions: - Keep an eye out if your feed or fodder is coming from VIC and/or ACT.
- You must report this plant if you see it anywhere in NSW. 1800 680 244
Full profile: Mexican feather grass | Parthenium weed (Parthenium hysterophorus) ![Parthenium weed](https://www.dpi.nsw.gov.au/__data/assets/image/0003/848145/Parthenium-weed.png)
![Parthenium weed](https://www.dpi.nsw.gov.au/__data/assets/image/0009/848142/Parthenium-weed-2.jpg)
This plant is: - listed in the Biosecurity Act as Prohibited Matter, meaning you MUST report it.
- a Weed of National Significance.
- an invasive herb, toxic to humans and animals.
NSW has had isolated outbreaks and this plant is the subject of a strict eradication and surveillance program. Actions: - Keep an eye out if your feed or fodder is coming from central and/or southern QLD.
- You must report this plant if you see it anywhere in NSW. 1800 680 244
Full profile: Parthenium weed | Rubber vine (Cryptostegia grandiflora) ![Rubber vine](https://www.dpi.nsw.gov.au/__data/assets/image/0009/848151/Rubber-vine.jpg) This plant is:
- listed in the Biosecurity Act as Prohibited Matter, meaning you MUST report it.
- a Weed of National Significance.
- an invasive vine.
- not yet present in NSW.
Actions: - Keep an eye out if your feed or fodder is from QLD.
- You must report this plant if you see it anywhere in NSW. 1800 680 244
Full profile: Rubber vine |
Siam weed (Chromolaena odorata)
![Siam weed](https://www.dpi.nsw.gov.au/__data/assets/image/0009/141867/siam-weed.jpg) ![Siam weed](https://www.dpi.nsw.gov.au/__data/assets/image/0009/848160/Siam-weed.jpg) Also known as: chromolaena, triffid weed, bitter bush, Jack-in-the-bush This plant is: - listed in the Biosecurity Act as Prohibited Matter, meaning you MUST report it.
- on the National Environmental Alert List.
- a serious weed impacting pastures and is toxic to cattle.
- not yet present in NSW.
Actions: - Keep an eye out if your feed or fodder is from Northern QLD.
- You must report this plant if you see it anywhere in NSW. 1800 680 244
Full profile: Siam weed | Kochia (Bassia scoparia) ![Kochia](https://www.dpi.nsw.gov.au/__data/assets/image/0007/848131/Kochia.jpg) ![Kochia](https://www.dpi.nsw.gov.au/__data/assets/image/0010/848125/Kochia-2.png)
This plant is: - listed in the Biosecurity Act as Prohibited Matter, meaning you MUST report it.
- on the National Environmental Alert List.
- a serious crop and pasture weed.
- not yet present in NSW.
It was previously planted in WA (but is now considered eradicated) and was found contaminating carrot seed in TAS. Actions: - Keep an eye out for this plant, particularly if your feed or fodder is from WA or TAS.
- You must report this plant if you see it anywhere in NSW. 1800 680 244
Full profile: Kochia | Koster’s curse (Clidemia hirta) ![Kosters curse](https://www.dpi.nsw.gov.au/__data/assets/image/0005/848138/Kosters-curse.png) ![Kosters curse](https://www.dpi.nsw.gov.au/__data/assets/image/0010/848134/Kosters-curse-2.jpg)
This plant is: - listed in the Biosecurity Act as Prohibited Matter, meaning you MUST report it.
- a highly invasive shrub in pastures.
- not yet present in NSW.
This plant was once detected in Northern QLD, but is considered eradicated. Actions: - Keep an eye out for this plant, particularly if your feed or fodder is from Northern QLD.
- You must report this plant if you see it anywhere in NSW.
1800 680 244
Full profile: Koster's curse |
Spotted knapweed (Centaurea stoebe subsp. Micranthos) ![Spotted knapweed](https://www.dpi.nsw.gov.au/__data/assets/image/0003/848172/Spotted-knapweed.png) This plant:
- is listed in the Biosecurity Act as Prohibited Matter, meaning you MUST report it.
- is a potential weed of pastures.
- is not yet present in NSW.
- was once found in ACT, but is considered eradicated.
Actions: - Keep an eye out for this plant, particularly if your feed or fodder is from ACT.
- You must report this plant if you see it anywhere in NSW. 1800 680 244
Full profile: Spotted knapweed | Witchweeds (Striga species) ![Witchweed](https://www.dpi.nsw.gov.au/__data/assets/image/0006/848184/Witchweeds.png)
These plants:
- are listed in the Biosecurity Act as Prohibited Matter, meaning you MUST report them.
- are serious parasitic weeds impacting crops.
- are not yet present in NSW.
- were once detected in QLD (on a cane farm near Mackay), but are considered eradicated.
Actions: - Keep an eye out for this plant, particularly if your feed or fodder is from QLD.
- You must report these plants if you see them anywhere in NSW.
1800 680 244
Full profile: Witchweeds | |
Seek advice and manage these weeds |
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Burr ragweed (Ambrosia confertiflora) ![Burr ragweed](https://www.dpi.nsw.gov.au/__data/assets/image/0011/848090/Burr-ragweed.png) This plant is:
- unpalatable and can cause fault in wool.
- a human allergen.
- is found on the western slopes and plains of NSW
- also found in South-East QLD.
Action: If you see this weed, contact your local council weeds officer for assistance. Full profile: Burr ragweed | Cape tulip (Moraea flaccida and Moraea miniata) ![Cape tulip](https://www.dpi.nsw.gov.au/__data/assets/image/0011/848099/Cape-tulip.png) This plant is:
- invasive and toxic and impacts pastures and cereals.
- found in Hunter Valley, Riverina, western slopes, western plains and all coastal regions of NSW.
Action: If you see this weed, contact your local council weeds officer for assistance. Full profiles: Cape tulip one leaf and cape tulip two leaf | Chilean needle grass (Nassella neesiana) ![Chilean needle grass](https://www.dpi.nsw.gov.au/__data/assets/image/0008/848105/chilean-needle-grass.png)
![Chilean needle grass](https://www.dpi.nsw.gov.au/__data/assets/image/0005/848102/chilean-needle-grass-2.jpg)
This plant is: - a serious pasture invader, reducing production, injuring stock, and causing wool and hide fault.
- found in the Northern Tablelands and North West Slopes of NSW.
- also found in VIC, SA, TAS and ACT.
Action: If you see this weed, contact your local council weeds officer for assistance. Full profile: Chilean needle grass |
Fireweed (Senecio madagascariensis) ![Fireweed](https://www.dpi.nsw.gov.au/__data/assets/image/0006/848112/Fireweed.png) This plant:
- invades pastures, and is toxic to stock.
- is found in coastal NSW and on the Northern and Southern Tablelands.
- is also found in QLD and VIC.
Action: If you see this weed, contact your local council weeds officer for assistance. Full profile: Fireweed | Giant rat’s tail grass (Sporobolus pyramidalis)
![Giant rat's tail grass](https://www.dpi.nsw.gov.au/__data/assets/image/0003/351840/giant-rats-tail-grass.jpg) This plant is: - an invasive grass that reduces production
- found in QLD
Action: If you see this weed, contact your local council weeds officer for assistance Full profile: Giant rat's tail grass | Hymenachne (Hymenachne amplexicaulis and hybrids) ![Hymenachne](https://www.dpi.nsw.gov.au/__data/assets/image/0006/848121/Hymenachne.png)
This plant is:
- a Weed of National Significance.
- an invasive, semi-aquatic water grass.
- found in isolated sites on the NSW North Coast
- actively being controlled in NSW.
- also found in QLD and NT.
Action: If you see this weed, contact your local council weeds officer for assistance. Full profile: Hymenachne |
Serrated tussock (Nassella trichotoma) ![Serrated tussock](https://www.dpi.nsw.gov.au/__data/assets/image/0006/848157/serrated-tussock.png)
![Serrated tussock](https://www.dpi.nsw.gov.au/__data/assets/image/0003/848154/serrated-tussock-2.jpg)
This plant is:
- a Weed of National Significance.
- a highly invasive grass
- in NSW, and the main infestations are in the Central and Southern Tablelands from Mudgee south to the Victorian border and small areas on the Northern Tablelands.
- also in VIC, TAS and ACT.
Action: If you see this weed, contact your local council weeds officer for assistance. Full profile: Serrated tussock | Silverleaf nightshade (Solanum elaeagnifolium) ![Silverleaf nightshade](https://www.dpi.nsw.gov.au/__data/assets/image/0006/848166/sliverleaf-nightshade.png) This plant is:
- a Weed of National Significance.
- a serious crop and pasture weed.
- now found in most parts of NSW.
- also in VIC and SA.
Action: If you see this weed, contact your local council weeds officer for assistance. Full profile: Silverleaf nightshade | Tobacco weed (Elephantopus mollis) ![Tobacco weed](https://www.dpi.nsw.gov.au/__data/assets/image/0009/848178/tobacco-weed.png)
![Tobaccon weed](https://www.dpi.nsw.gov.au/__data/assets/image/0006/848175/tobacco-weed-2.jpg)
This plant is:
- an invasive threat to beef and dairy pastures
- found in Northern QLD.
This plant was once found on the North Coast - but is considered eradicated. Action: If you see this weed, contact your local council weeds officer for assistance. Full profile: Tobacco weed |
Aleman grass (Echinochloa polystachya) ![Aleman grass](https://www.dpi.nsw.gov.au/__data/assets/image/0019/416143/Aleman-grass-flower-web.jpg) ![Aleman grass infestation](https://www.dpi.nsw.gov.au/__data/assets/image/0020/416144/Aleman-grass-plant-web.jpg)
This plant is: - a water weed.
- is found in QLD.
Action: If you see this weed, contact your local council weeds officer for assistance. Full profile: Aleman grass | | |