Pest plants

Pest plants must be managed because they can have significant impacts on industries and the environment.

Declared pest plants

Pest plants that are a significant threat to agriculture, the natural environment and public health and safety are called declared plants. Land owners have a legal responsibility to manage these plants. The Natural Resources Management (NRM) Act 2004 sets out the legal framework for:

More information about South Australian weeds can be found at PIRSA - (PIRSA biosecurity weeds in South Australia) and at Declared plants of South Australia.

What is being done to manage pests?

Natural Resources Northern and Yorke has a clearly defined approach to managing pests. This helps improve detection and response to new and existing pests based on their invasiveness, impact, potential distribution and feasibility of containing it.

How we can help you

Natural Resources Northern and Yorke staff are available to help you plan your approach to pest plant control. Staff can provide you with technical support, information resources and in some cases incentives to help you control pest plants. Contact us to find out more.

Natural Resources Northern and Yorke staff also ensure that declared plants are controlled as per the Northern and Yorke NRM Board’s responsibilities under the NRM Act. The approach taken to this control is detailed in the Northern and Yorke NRM Plan.

Correct use of chemicals for weed control

We can provide advice on the use of chemicals to control pest plants. It is important that chemicals such as herbicides and pesticides are used correctly. Incorrect use can impact human health and the health of the environment. Many people apply up to five times more chemical than is needed to kill the plants being targeted. This is a huge waste of time and money and can be counterproductive as it can kill the foliage of the plant before reaching the roots and so allow the weed to regrow. Excess chemicals can also run off, impacting soils, native plants and animals, and stormwater and waterways.

Priority weeds in the Northern and Yorke region

African boxthorn

Common name: African boxthorn
Scientific name: Lycium ferocissimum
Status: Declared: must be controlled, banned from sale.
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African feathergrass

Common name: African feathergrass
Scientific name: Lycium ferocissimum
Status: Weed of national significance
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African rue

Common name: African rue
Scientific name: Peganum harmala
Status: Declared
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Aleppo pine

Common name: Aleppo pine
Scientific name: Pinus halepensis)
Status: Pest plant
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Bathurst burr

Common name: Bathurst burr
Scientific name: Xanthium spinosum
Status: Declared
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Blackberry

Common name: Blackberry
Scientific name: Rubus fruticosus sp. agg
Status: Weed of national significance
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Bladder campion

Common name: Bladder campion
Scientific name: Silene vulgaris
Status: Declared
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Boneseed
Bridal creeper

Common name: Bridal creeper
Scientific name: Asparagus asparagoides
Status: Weed of national significance
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Bridal veil
Broom

Common name: Broom
Scientific name: Genista monspessulana
Status: Declared: must be controlled, banned from sale.
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Buffel grass
Calomba daisy

Common name: Calomba daisy
Scientific name: Oncosiphon suffruticosum
Status: Declared
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Caltrop

Common name: Caltrop
Scientific name: Tribulus terrestris
Status: Declared: must be controlled, banned from sale
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Cape tulip

Common name: Cape tulip
Scientific name: Moraea flaccida and miniata
Status: Declared
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Creeping knapweed

Common name: Creeping knapweed
Scientific name: Rhaponticum repens
Status: Declared
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Cutleaf mignonette

Common name: Cutleaf mignonette
Scientific name: Reseda lutea
Status: Declared
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Fountain grass

Common name: Fountain grass
Scientific name: Cenchrus setaceus
Status:
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Gazania

Common name: Gazania
Scientific name: Gazania sp.
Status: Invasive coastal weed
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Golden wreath wattle

Common name: Golden wreath wattle
Scientific name: Acacia saligna
Status: Declared.
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Gorse

Common name: Gorse
Scientific name: Ulex europaeus
Status: Weed of national significance
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Hoary cress

Common name: Hoary cress
Scientific name: Cardaria draba
Status: Declared
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Horehound

Common name: Horehound
Scientific name: Marrubium vulgare
Status: Declared
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Innocent weed

Common name: Innocent weed
Scientific name: Cenchrus incertus and longispinus
Status: Declared
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Italian buckthorn

Common name: Italian buckthorn
Scientific name: Rhamnus alaternus
Status: Pest plant
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Khaki weed

Common name: Khaki weed
Scientific name: Alternanthera pungens
Status: Declared
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Lincoln weed

Common name: Lincoln weed
Scientific name: Diplotaxis tenuifolia
Status: Declared
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Mexican feathergrass

Common name: Mexican feathergrass
Scientific name: Nassella tenuissima
Status: Declared.
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Olive

Common name: Olive
Scientific name: Olea europaea
Status: Declared
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Polygala

Common name: Polygala
Scientific name: Polygala myrtifolia var. myrtifolia
Status: Declared
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Prickly pear and Wheel cactus

Common name: Prickly pear and Wheel cactus
Scientific name: Opuntia sp.
Status: Weed of national significance
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Silverleaf nightshade

Common name: Silverleaf nightshade
Scientific name: Solanum elaegnifolium
Status: Weed of national significance
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Skeleton weed

Common name: Skeleton weed
Scientific name: Chondrilla juncea
Status: Declared
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Tall wheatgrass

Common name: Tall wheatgrass
Scientific name: Thinopyrum ponticum)
Status: Pest plant
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White weeping broom

Common name: White weeping broom
Scientific name: Ratama raetam
Status: Declared Plant
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Wild artichoke

Common name: Wild artichoke
Scientific name: Cynara cardunculus
Status: Declared
Related links:


Yellow burrweed

Common name: Yellow burrweed
Scientific name: Amsinckia intermedia
Status: Priority pest plant
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