Salvinia

Salvinia spp.
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See it - Report it

Early detection is vital to stop Salvinia becoming established in South Australia.
If you see this weed, please report it to the National Pest Alert Hotline (Freecall) 1800 084 881.

Freecall 1800 084 881

Weed profile

  • Perennial
  • Reportable
  • Habitat: waterways

Impact

Invades and covers water bodies.

Description

  • Aquatic floating fern.
  • Roots black, hanging in water.
  • Leaves oval forming chain-like structures at water surface Eggbeater-shaped hairs trap air bubbles.

Control options

  • chemical control

    orange oil (55.2g/kg)

    When: Spot spray, September - April

    Where: Water in artificial impoundments and enclosed bodies of water.

  • chemical control

    diquat (200g/L)

    When: Spot spray, September - April

    Where: Aquatic habitats

  • physical control

    Manual removal

    When: September - April

    Where: Aquatic habitats

orange oil (55.2g/kg)

Application Method: Spot spray

Application Rate: 1L/100L

Product Name: Water Clear®

Herbicide Group: _

Situation: Water in artificial impoundments and enclosed bodies of water.

Timing: Spot spray, September - April

Comments: Spray on free floating plants. Do not use in natural water bodies or streams where it will reach natural water bodies. Do not use in dams holding water for human consumption.

Legal Status: Registered

diquat (200g/L)

Application Method: Spot spray

Application Rate: 400mL/100L

Product Name: Reglone®

Herbicide Group: 22

Situation: Aquatic habitats

Timing: Spot spray, September - April

Comments: Seek advice from your regional landscape board. Apply as an overall spray to wet foliage thoroughly. Clear water is necessary for best results. Add 150 mL Agral® surfactant per 100L. Repeat applications 7-14 days later may be necessary to control dense infestations.

Legal Status: Registered

Manual removal

Situation: Aquatic habitats

Timing: September - April

Comments: Seek advice from your regional landscape board. Dredge or skim plants out of the water and dispose by composting or drying. Monitor site and undertake follow up control until eradication has been achieved

Legal requirements in each region

To find out which landscape region you're in visit the NatureMaps website.
Alinytjara Wiluṟara
Eyre Peninsula
Green Adelaide
Hills and Fleurieu
Kangaroo Island
Limestone Coast
Murraylands and Riverland
Northern and Yorke
South Australian Arid Lands