Black knapweed (Centaurea X moncktonii) 
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) 
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)   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) 
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)   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)
  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)  
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)  
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)   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) 
 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)   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)   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) 
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)   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)
  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) 
 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) 
 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)   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) 
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)  
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 | | |
