Pest plants

Pest plants (weeds) have a significant impact on agricultural production, costing Australia over $4 billion a year and over $19 million per year in the South East region. Pest plants also have a significant impact on the environment as they compete with native vegetation, much of which is food or homes for native animals.

The South East Natural Resources Management Board aims to prevent the invasion of new weeds that threaten the region and to mitigate or eradicate many weeds currently present.

A pest management strategy for the South East region has been developed. This identifies priority weeds and their management actions.

There are three categories of weeds:

  1. Declared - the weed is a significant threat to agriculture, the natural environment and public health and safety.
  2. Priority - the weed poses a serious threat and is identified as being a priority within the region.
  3. Alert - the weed poses a serious threat but is not present in the region yet and has the potential to establish itself.
  4. Weeds of national significance (WONS) – weeds effecting on a national scale.

Declared Plant Review

The community consultation for the next phase of the SA declared plant review has begun!
Biosecurity SA, a division of Primary Industries and Region SA (PIRSA), in partnership with the Department of Environment, Water and Natural Resources (DEWNR) and the eight Natural Resources Management (NRM) boards, is seeking feedback on four revised declared plant policies for existing declared plants and five draft policies for new plants proposed for declaration under the Natural Resources Management Act 2004. We want you to provide input into the revision of the Declared Plant Policies and the addition of new declared plants. Read the media release, and see the YourSAy website for information on how to be involved.

Spiny Rush versus Sea Rush - can you tell the difference?

Correct weed identification is crucial. This is an excellent example where it can be easy to accidentally remove a native plant that looks very close to an invasive weed. A poster has been developed to help landholders tell the difference which can be printed off.

Weed Spotters program

Natural Resources South East also has established a ‘Weed Spotters’ program. Weed spotters are volunteers who receive training to help identify new, early or established pest plant incursions. They are a front line defence in spotting pest plants and report any issues for immediate action. Find out more about the Weed Spotters.

Controlling pest plants

If you need assistance with pest plant control, please contact our authorised officers in your area or call 08 8735 1177.

Report a weed!

If you have found a declared weed or a new weed you are unsure of then complete this form and send it back to us.

Priority weeds in the South East region

pest management strategy for the South East region has been developed. This identifies priority weeds and their management actions.

Aleppo pine

Common name: Aleppo pine
Scientific name: Pinus halepensis
Status: Declared. South East management action: contain spread.
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Asparagus fern

Common name: Asparagus fern
Scientific name: Asparagus aethiopicus
Status: Non-declared species. South East management action: destroy infestations.
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Bathurst burr

Common name: Bathurst burr
Scientific name: Xanthium spinosum
Status: Declared. South East management action: contain spread.
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Blackberry

Common name: Blackberry
Scientific name: Rubus fruticosus
Status: Declared: must be controlled. South East management action: destroy infestations.
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Boneseed

Common name: Boneseed
Scientific name: Chrysanthemoides monilifera
Status: Declared. South East management action: contain spread.
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Caltrop

Common name: Caltrop
Scientific name: Tribulus terrestris
Status: Declared. South East management action: contain spread.
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Cape tulip

Common name: Cape tulip
Scientific name: Moraea flaccida
Status: Declared. South East management action: contain spread.
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Creeping knapweed

Common name: Creeping knapweed
Scientific name: Acroptilon repens
Status: Declared. South East management action: contain spread.
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Gorse

Common name: Gorse
Scientific name: Ulex europaeus
Status: Declared. South East management action: contain spread.
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Hoary cress

Common name: Hoary cress
Scientific name: Lepidium draba
Status: Declared. South East management action: contain spread.
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Innocent weed

Common name: Innocent weed
Scientific name: Cenchrus incertus
Status: Declared: must be controlled. South East management action: destroy infestations.
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Mexican feathergrass

Common name: Mexican feathergrass
Scientific name: Pennisetum macrourum
Status: Declared species. South East management action: contain spread.
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Noogoora burr

Common name: Noogoora burr
Scientific name: Xanthium strumarium
Status: Declared. South East management action: contain spread.
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Pampas grass

Common name: Pampas grass
Scientific name: Cortaderia species
Status: Declared: must be controlled. South East management action: destroy infestations.
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Salvation Jane

Common name: Salvation Jane
Scientific name: Echium plantagineum
Status: Declared. South East management action: contain spread.
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Silverleaf nightshade

Common name: Silverleaf nightshade
Scientific name: Solanum elaeagnifolium
Status: Declared: must be controlled. South East management action: destroy infestations.
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Three corner jack

Common name: Three corner jack
Scientific name: Emex australis
Status: Declared. South East management action: contain spread.
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Variegated thistle

Common name: Variegated thistle
Scientific name: Silybum marianum
Status: Declared. South East management action: contain spread.
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Western Cape bridal creeper

Common name: Western Cape bridal creeper
Scientific name: Asparagus asparagoides Western Cape form
Status: Declared: must be controlled. South East management action: destroy infestations.
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Yellow burweed

Common name: Yellow burweed
Scientific name: Amsinckia calycina
Status: Declared. South East management action: contain spread.
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Alert weeds in the South East region

Over 30 species of alert weeds have been identified for the South East region. These weeds are species not yet present in the South East or present in very limited numbers, but that have the potential for large negative impacts if they were to become established in the region.

Alligator weed

Common name: Alligator weed
Scientific name: Alternanthera philoxeroides
Status: Alert weed
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Asparagus fern

Common name: Asparagus fern
Scientific name: Asparagus scandens
Status: Alert weed
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Bridal veil

Common name: Bridal veil
Scientific name: Asparagus declinatus
Status: Alert weed
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Broomrape

Common name: Broomrape
Scientific name: Orobranche ramosa
Status: Alert weed
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Calomba daisy

Common name: Calomba daisy
Scientific name: Oncosiphon suffruticosum
Status: Alert weed
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Chilean needlegrass

Common name: Chilean needlegrass
Scientific name: Nassella neesiana
Status: Alert weed
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Coolatai grass

Common name: Coolatai grass
Scientific name: Hyparrhenia hirta
Status: Alert weed
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Golden dodder

Common name: Golden dodder
Scientific name: Cuscuta campestris
Status: Alert weed
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Horsetail

Common name: Horsetail
Scientific name: Equisetum hyemale
Status: Alert weed
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Mexican feathergrass

Common name: Mexican feathergrass
Scientific name: Nassella tenuissima
Status: Alert weed
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Primrose willow

Common name: Primrose willow
Scientific name: Ludwigia peruviana
Status: Alert weed
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Salvinia

Common name: Salvinia
Scientific name: Salvinia molesta
Status: Alert weed
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Serrated tussock

Common name: Serrated tussock
Scientific name: Nassella trichotoma
Status: Alert weed
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Texas needlegrass

Common name: Texas needlegrass
Scientific name: Nassella leucotricha
Status: Alert weed
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Water hyacinth

Common name: Water hyacinth
Scientific name: Eichhornia crassipes
Status: Alert weed
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White weeping broom

Common name: White weeping broom
Scientific name: Retama raetam
Status: Alert weed
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