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Controlling weeds

Pest plants can pose significant threat to agriculture, the natural environment and public health and safety on Kangaroo Island.

Land owners have a legal responsibility to manage weeds, and there are many different methods of dealing with them. Good land management and gardening practices applied throughout the year can prevent new weed introductions and reduce further damage and spread.

The Landscape South Australia Act 2019 sets out the legal framework for:

  • banning the sale of declared weeds
  • controlling the movement of declared weeds
  • destroying or controlling infestations of declared weeds
  • notifying authorities when an infestation is detected.

More information can be found in Declared plants of South Australia – are they on your land?

Hints and tips

To help prevent spread of weeds in agricultural settings:

  • confine stock to one paddock for a week after purchase
  • clean all farm machinery before removing it from or bringing it on to your property
  • make sure you know where your produce is coming from and that it is clean
  • look for new weeds along grain trails and at stock campsites.

To learn more about how to reduce the spread of weeds and prevent the establishment of new weed species in the region and state, download the Livestock management guidelines and Fodder management guidelines.

In the garden:

  • be knowledgeable about weeds and learn to recognise them
  • be aware of what you buy and take cuttings from – some weeds are very pretty but can be very damaging
  • check the Coastal Gardens planting guide or the KI Native Plant Nursery for alternatives to potential weeds
  • never dump lawn clipping and garden waste into bushland
  • inform others if they have potential weeds in their gardens.

Download the Kangaroo Island garden weeds to learn more.

Weed advice

Control options for weeds will depend on the species of plant, their different growth characteristics and whether they are annual, biennial or perennial. If you are not sure what weeds you have or how to control them, please contact the Kangaroo Island Landscape Board, phone 08 8553 2476, or email, for advice.

You can also find plenty of useful information and advice on how to identify, treat or control weed through the Weed Control Handbook, which is updated annually, or by downloading the SA Weed Control app for you smart phone.

Priority weeds on Kangaroo Island

African Boxthorn

Common name: African Boxthorn

Scientific name: Lycium ferocissimum

Status: Declared

Related links:

Controlling weeds

Common name: Blackberry

Scientific name: Rubus fruticosus

Status: Declared: must be controlled, banned from sale or movement

Related links:

Bluebell creeper

Common name: Bluebell creeper

Scientific name: Sollya heterophylla

Status: Environmental weed

Related links:

Bridal creeper

Common name: Bridal creeper

Scientific name: Asparagus asparagoides

Status: Declared: must be controlled, banned from sale or movement

Related links:

Bridal veil

Common name: Bridal veil

Scientific name: Asparagus declinatus

Status: Declared: must be controlled, banned from sale or movement

Related links:

Bulbil watsonia

Common name: Bulbil watsonia

Scientific name: Watsonia meriana var. bulbillifera

Status: Declared: must be controlled, banned from sale and movement

Related links:

Controlling weeds

Common name: Caltrop

Scientific name: Tribulus terrestris

Status: Declared

Related links:

Fountain grass

Common name: Fountain grass

Scientific name: Cenchrus setaceum

Status: Declared: must be controlled, banned from sale or movement

Related links:

Controlling weeds

Common name: Gorse

Scientific name: Ulex europaeus

Status: Declared: must be controlled, banned from sale or movement

Related links:

Controlling weeds

Common name: Horehound

Scientific name: Marrubium vulgare

Status: Declared: must be controlled, banned from sale or movement

Related links:

Italian buckthorn

Common name: Italian buckthorn

Scientific name: Rhamnus alaternus

Status: Environmental weed

Related links:

Monadenia / African weed orchid

Common name: Monadenia / African weed orchid

Scientific name: Disa bracteata

Status: Monadenia is an emerging weed and not currently declared under the Landscapes SA Act 2019.

Related links:

Montpellier Broom

Common name: Montpellier Broom

Scientific name: Genista monspessulana

Status: Declared: must be controlled, banned from sale or movement

Related links:

One-leaf cape tulip

Common name: One-leaf cape tulip

Scientific name: Moraea flaccid

Status: Declared: must be controlled, banned from sale or movement

Related links:

Salvation Jane

Common name: Salvation Jane

Scientific name: Echium plantagineum

Status: Declared: must be controlled, banned from sale or movement

Related links:

Sweet pittosporum

Common name: Sweet pittosporum

Scientific name: Pittosporum undulatum

Status: Environmental weed

Related links:

Water hyacinth

Common name: Water hyacinth

Scientific name: Eichhornia crassipes

Status: Declared: must be controlled, banned from sale or movement

Related links:

Potential weed threats

Common name: African Daisy

Scientific name: Senecio pterophorus

Status:

Related links:

More information

Animal and Plant Control Officer

35 Dauncey Street, Kingscote SA

08 8553 2476

ki.landscapeboard@sa.gov.au