Mexican feathergrass
Nassella tenuissima
See it - Report it
Early detection is vital to stop Mexican feathergrass becoming established in South Australia.
If you see this weed, please report it to the National Pest Alert Hotline (Freecall) 1800 084 881.
Weed profile
Perennial
Grass
Reportable
Contaminates produce- Habitat: gardens, native vegetation, pastures
Impact
Invades pastures and bushland. Sharp seeds.
Description
- Small perennial tussock grass.
- Fine inrolled leaf blades.
- Long fine awns give the seeding heads a feathery appearance.
Control options
glyphosate (450g/L)
Application Method: Wiper
Application Rate: 2.6L/10L
Product Name: Roundup CT®
Herbicide Group: 9
Situation: Pastures and native vegetation.
Timing: Wiper, spring
Comments: Non selective, avoid contact with desirable plants.
Legal Status: PER 9792 (exp. 2025)
glyphosate (450g/L)
Application Method: Spot spray
Application Rate: 800mL/100L
Product Name: Roundup CT®
Herbicide Group: 9
Situation: Pastures and native vegetation.
Timing: Spot spray, spring
Comments:
Non selective, avoid contact with desirable plants.
Variable results.
Legal Status: PER 9792 (exp. 2025)
flupropanate (745g/L) + glyphosate (450g/L)
Application Method: Spot spray
Application Rate: 150-300mL + 270mL/100L
Product Name: Tussock™ + Roundup CT®
Herbicide Group: 0, 9
Situation: Pastures and native vegetation.
Timing: Spot spray, spring
Comments:
- Use higher rate if the weed is dense.
- Apply to fresh foliage.
- Slashing to promote fresh growth 2-3 weeks before spraying will increase effectiveness.
- Non selective, avoid contact with desirable plants.
- Residues in the soil may suppress weeds and other susceptible species for one to two years.
Legal Status: PER 9792 (exp. 2025)
flupropanate (745g/L)
Application Method: Wiper
Application Rate: 500mL/10L
Product Name: Tussock™
Herbicide Group: 0
Situation: Pastures and native vegetation.
Timing: Wiper, spring
Legal Status: PER 9792 (exp. 2025)
flupropanate (745g/L)
Application Method: Spot spray
Application Rate: 100-300mL/100L
Product Name: Tussock™
Herbicide Group: 0
Situation: Pastures and native vegetation.
Timing: Spot spray, spring
Comments:
Add a non-ionic surfactant. A slow-working residual.
Do not graze or cut for stockfeed for at least 14 days after application. Residues in the soil may suppress weeds and other susceptible species for one to two years.
Legal Status: PER 9792 (exp. 2025)
Legal requirements in each region
Land owners in this region to eliminate the plant from their property. 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.
Must not be imported into the region.
land owners in this region must notify the Alinytjara Wiluṟara Landscape Board of any infestation of the plant found on their land.
Land owners in this region to eliminate the plant from their property. 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.
Must not be imported into the region.
land owners in this region must notify the Eyre Peninsula Landscape Board of any infestation of the plant found on their land.
Land owners in this region to eliminate the plant from their property. 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.
Must not be imported into the region.
land owners in this region must notify the Green Adelaide Board of any infestation of the plant found on their land.
Land owners in this region to eliminate the plant from their property. 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.
Must not be imported into the region.
land owners in this region must notify the Hills and Fleurieu Landscape Board of any infestation of the plant found on their land.
Land owners in this region to eliminate the plant from their property. 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.
Must not be imported into the region.
land owners in this region must notify the Kangaroo Island Landscape Board of any infestation of the plant found on their land.
Land owners in this region to eliminate the plant from their property. 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.
Must not be imported into the region.
land owners in this region must notify the Limestone Coast Landscape Board of any infestation of the plant found on their land.
Land owners in this region to eliminate the plant from their property. 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.
Must not be imported into the region.
land owners in this region must notify the Murraylands and Riverland Landscape Board of any infestation of the plant found on their land.
Land owners in this region to eliminate the plant from their property. 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 must notify the Northern and Yorke Landscape Board of any infestation of the plant found on their land.
Land owners in this region to eliminate the plant from their property. 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.
land owners in this region must notify the South Australian Arid Lands Landscape Board of any infestation of the plant found on their land.
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: