Pest plants must be managed because they can have significant impacts on industries and the environment.
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 Landscape South Australia Act 2019 (the Act) sets out the legal framework for:
The Northern and Yorke Landscape Board 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.
Northern and Yorke Landscape Board 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.
Our staff also ensure that declared plants are controlled as per the Northern and Yorke Landscape Board's responsibilities under the Act.
We recently delivered a 1-hour webinar to share the latest techniques for controlling the declared weed, Silverleaf Nightshade. View the recorded session here.
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.
Each district in the Northern and Yorke region has a Weed Action Plan, which identifies the priority weeds and how we will manage them over a five-year period.
Common name: African boxthorn
Scientific name: Lycium ferocissimum
Status: Declared: must be controlled, banned from sale.
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Common name: African feathergrass
Scientific name: Cenchrus macrourus
Status: Declared
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Common name: African lovegrass
Scientific name: Eragrostis curvula
Status: Declared: must be controlled, banned from sale
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Common name: African rue
Scientific name: Peganum harmala
Status: Declared
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Common name: Aleppo pine
Scientific name: Pinus halepensis
Status: Pest plant
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Common name: Alligator weed
Scientific name: Alternanthera philoxeroides
Status: State Alert. Notify Landscape Board immediately if found. Declared: must be destroyed, banned from sale.
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Common name: Arum lily
Scientific name: Zantedeschia aethiopica
Status: Declared: must be controlled (doesn't apply to ones planted >100m from wetland/watercourse). Plant mustn't be sold.
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Common name: Asparagus fern
Scientific name: Asparagus scandens
Status: Must be controlled, banned from sale.
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Common name: Bathurst burr
Scientific name: Xanthium spinosum
Status: Declared
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Common name: Blackberry
Scientific name: Rubus fruticosus sp. agg
Status: Weed of national significance
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Common name: Bladder campion
Scientific name: Silene vulgaris
Status: Declared
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Common name: Bluebell creeper
Scientific name: Billardiera heterophylla
Status: Declared: must be controlled, banned from sale.
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Common name: Boneseed
Scientific name: Chrysanthemoides monilifera
Status:
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Common name: Bridal creeper
Scientific name: Asparagus asparagoides
Status: Weed of national significance
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Common name: Bridal veil
Scientific name: Asparagus declinatus
Status: Weed of national significance
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Common name: Broom
Scientific name: Genista monspessulana
Status: Declared: must be controlled, banned from sale.
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Common name: Broomrape
Scientific name: Orobanche spp
Status: State Alert. Notify Landscape Board immediately if found. Declared: must be destroyed, banned from sale.
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Common name: Buffel grass
Scientific name: Cenchrus ciliaris
Status: Pest plant
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Common name: Bulbil watsonia
Scientific name: Watsonia meriana var. bulbillifera
Status: Declared: must be controlled, banned from sale.
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Common name: Calomba daisy
Scientific name: Oncosiphon suffruticosum
Status: Declared
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Common name: Caltrop
Scientific name: Tribulus terrestris
Status: Declared: must be controlled, banned from sale
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Common name: Cape tulip
Scientific name: Moraea flaccida and miniata
Status: Declared
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Common name: Chilean needlegrass
Scientific name: Nassella neesiana
Status: Declared: notify Landscape Board immediately if found. Must be destroyed, banned from sale.
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Common name: Chincherinchee
Scientific name: Ornithogalum thyrsoides
Status: Alert weed
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Common name: Coolatai grass
Scientific name: Hyparrhenia hirta
Status: Must be controlled, banned from sale.
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Common name: Creeping knapweed
Scientific name: Rhaponticum repens
Status: Declared
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Common name: Cutleaf mignonette
Scientific name: Reseda lutea
Status: Declared
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Common name: Dune onion weed
Scientific name: Trachyandra divaricata
Status: Priority emerging weed
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Common name: English broom
Scientific name: Cytisus scoparius
Status: Declared: must be controlled, banned from sale
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Common name: Fountain grass
Scientific name: Cenchrus setaceus
Status:
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Common name: Gazania
Scientific name: Gazania sp.
Status: Invasive coastal weed
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Common name: Golden wreath wattle
Scientific name: Acacia saligna
Status: Declared.
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Common name: Gorse
Scientific name: Ulex europaeus
Status: Weed of national significance
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Common name: Hawthorn
Scientific name: Azzarola Crataegus sinaica and May Crataegus
Status: Declared: must be controlled, banned from sale
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Common name: Hoary cress
Scientific name: Cardaria draba
Status: Declared
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Common name: Horehound
Scientific name: Marrubium vulgare
Status: Declared
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Common name: Horsetail
Scientific name: Equisetum spp.
Status: State Alert. Notify Landscape Board immediately if found. Declared: must be destroyed, banned from sale
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Common name: Hudson pear (white-spined)
Scientific name: Cylindropuntia pallida (syn. C. rosea)
Status: Declared: must be controlled, banned from sale.
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Common name: Innocent weed
Scientific name: Cenchrus incertus and longispinus
Status: Declared
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Common name: Italian buckthorn
Scientific name: Rhamnus alaternus
Status: Pest plant
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Common name: Khaki weed
Scientific name: Alternanthera pungens
Status: Declared
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Common name: Lincoln weed
Scientific name: Diplotaxis tenuifolia
Status: Declared
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Common name: Mexican feathergrass
Scientific name: Nassella tenuissima
Status: Declared.
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Common name: Olive
Scientific name: Olea europaea
Status: Declared
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Common name: Pampas grasses
Scientific name: Cortaderia spp.
Status: Declared: notify Landscape Board immediately if found. Must be controlled, banned from sale.
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Common name: Polygala
Scientific name: Polygala myrtifolia var. myrtifolia
Status: Declared
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Common name: Prickly pear and Wheel cactus
Scientific name: Opuntia sp.
Status: Weed of national significance
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Common name: Sagittaria
Scientific name: Sagittaria platyphylla
Status: Regional Alert. Notify Landscape Board immediately if found. Declared: must be destroyed, banned from sale.
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Common name: Salvation jane
Scientific name: Echium plantagineum
Status: Declared: must be controlled, banned from sale.
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Common name: Salvinia
Scientific name: Salvinia molesta
Status: State Alert. Notify Landscape Board immediately if found. Declared: must be destroyed, banned from sale.
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Common name: Serrated tussock
Scientific name: Nassella trichotoma
Status: Declared: notify Landscape Board immediately if found, must be destroyed, banned from sale.
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Common name: Silverleaf nightshade
Scientific name: Solanum elaegnifolium
Status: Weed of national significance
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Common name: Skeleton weed
Scientific name: Chondrilla juncea
Status: Declared
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Common name: Spanish heath
Scientific name: Erica lusitanica
Status: Priority emerging weed.
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Common name: Spiny rush
Scientific name: Juncus acutus
Status: Declared: must be controlled, banned from sale.
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Common name: Tall wheatgrass
Scientific name: Thinopyrum ponticum)
Status: Pest plant
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Common name: Texas needlegrass
Scientific name: Nassella leucotricha
Status: Declared: notify Landscape Board immediately if found, must be destroyed, banned from sale.
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Common name: Water hyacinth
Scientific name: Eichhornia crassipes
Status: State Alert. Notify Landscape Board immediately if found. Declared: must be destroyed, banned from sale.
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Common name: White weeping broom
Scientific name: Ratama raetam
Status: Declared Plant
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Common name: Wild artichoke
Scientific name: Cynara cardunculus
Status: Declared
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Common name: Wild rose, Dog rose, and Sweet briar rose
Scientific name: Rosa canina and R. rubiginosa
Status: Declared: must be controlled, banned from sale. Related links:
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Common name: Yellow burrweed
Scientific name: Amsinckia intermedia
Status: Priority pest plant
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