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Noxious Weeds of the Illawarra

Plants declared Noxious and their classification

These plants are declared Noxious for the Wollongong, Shellharbour and Kiama local governmant areas.

Weed

Classification

African boxthorn - Lycium ferocissimum 

4

African feathergrass - Pennisetum macrourum

5

African lovegrass - Eragrostis curvula

4

African turnipweed - Sisymbrium runcinatum

5

African turnipweed - Sisymbrium thellungii  

5

Alligator weed - Alternanthera philoxeroides 

2

Anchored water hyacinth - Eichhornia azurea 

1

Annual ragweed - Ambrosia artemisiifolia  

5

Arrowhead - Sagittaria montevidensis  

5

Artichoke thistle - Cynara cardunculus  

5

Athel tree - Tamarix aphylla 

5

Bear-skin fescue - Festuca gautieri 

5

Bitou bush - Chrysanthemoides monilifera subspecies rotunda 

4

Black knapweed - Centaurea nigra 

1

Blackberry - Rubus fruticosus aggregate species
except cultivars Black satin, Chehalem, Chester Thornless, Dirksen Thornless, Loch Ness, Murrindindi, Silvan, Smoothstem, Thornfree 

4*

Boneseed - Chrysanthemoides monilifera subspecies monilifera  

4

Bridal creeper - Asparagus asparagoides  

5

Broomrapes - Orobanche species
Includes all Orobanche species except the native O. cernua variety australiana and O. minor

1

Burr ragweed - Ambrosia confertiflora  

5

Cabomba - Cabomba caroliniana  

5

Cayenne snakeweed - Stachytarpheta cayennensis  

5

Chilean needle grass - Nassella neesiana  

4*

Chinese violet - Asystasia gangetica subspecies micrantha 

1

Clockweed - Gaura lindheimeri  

5

Clockweed - Gaura parviflora  

5

Corn sowthistle - Sonchus arvensis  

5

Dodder - Cuscuta species
Includes All Cuscuta species except the native species C. australis, C. tasmanica and C. victoriana

5

East Indian hygrophila - Hygrophila polysperma 

1

Espartillo - Achnatherum brachychaetum  

5

Eurasian water milfoil - Myriophyllum spicatum 

1

Fine-bristled burr grass - Cenchrus brownii  

5

Fountain grass - Pennisetum setaceum  

5

Gallon's curse - Cenchrus biflorus  

5

Giant Parramatta grass - Sporobolus fertilis  

3

Glaucous starthistle - Carthamus glaucus 

5

Golden dodder - Cuscuta campestris 

4

Golden thistle - Scolymus hispanicus  

5

Gorse - Ulex europaeus  

3

Groundsel bush - Baccharis halimifolia  

3

Harrisia cactus - Harrisia species  

4*

Hawkweed - Hieracium species 

1

Horsetail - Equisetum species 

1

Hymenachne - Hymenachne amplexicaulis 

1

Karoo thorn - Acacia karroo 

1

Kochia - Bassia scoparia 
except Bassia scoparia subspecies trichophylla

1

Lagarosiphon - Lagarosiphon major 

1

Lantana - Lantana species  

4

Lantana - Lantana species  

5

Long-leaf willow primrose - Ludwigia longifolia  

5

Mexican feather grass - Nassella tenuissima  

1

Mexican poppy - Argemone mexicana  

5

Miconia - Miconia species 

1

Mimosa - Mimosa pigra 

1

Mossman River grass - Cenchrus echinatus  

5

Mysore thorn - Caesalpinia decapetala  

3

Onion grass - Romulea species
Includes all Romulea species and varieties except R. rosea var. australis 

5

Oxalis - Oxalis species and varieties
Includes all Oxalis species and varieties except the native species O. chnoodes, O. exilis, O. perennans, O. radicosa, O. rubens, and O. thompsoniae

5

Pampas grass - Cortaderia species  

4

Parthenium weed - Parthenium hysterophorus 

1

Pond apple - Annona glabra 

1

Prickly acacia - Acacia nilotica 

1

Prickly pear - Cylindropuntia species  

4*

Prickly pear - Opuntia species except O. ficus-indica  

4*

Red rice - Oryza rufipogon  

5

Rhus tree - Toxicodendron succedaneum 

4

Rubbervine - Cryptostegia grandiflora 

1

Sagittaria - Sagittaria platyphylla  

5

Salvinia - Salvinia molesta 

2

Sand oat - Avena strigosa  

5

Scotch/English broom - Cytisus scoparius  

4

Senegal tea plant - Gymnocoronis spilanthoides 

1

Serrated tussock - Nassella trichotoma  

4*

Siam weed - Chromolaena odorata 

1

Smooth-stemmed turnip - Brassica barrelieri subspecies oxyrrhina 

5

Soldier thistle - Picnomon acarna 

5

Spotted knapweed - Centaurea maculosa 

1

St. John's wort - Hypericum perforatum  

3

Texas blueweed - Helianthus ciliaris  

5

Water caltrop - Trapa species 

1

Water hyacinth - Eichhornia crassipes  

3

Water lettuce - Pistia stratiotes 

1

Water soldier - Stratiotes aloides 

1

Willows - Salix species
Includes all Salix species except S. babylonica, S. x reichardtii, S. x calodendron

5

Witchweed - Striga species
Includes all Striga species except native species and Striga parviflora

1

Yellow burrhead - Limnocharis flava 

1

Yellow nutgrass - Cyperus esculentus  

5

Legal Requirements

Class 1

The plant must be eradicated from the land and the land must be kept free of the plant.

Class 2

The plant must be eradicated from the land and the land must be kept free of the plant.

Class 3

The plant must be fully and continuously suppressed and destroyed.

Class 4

The growth and spread of the plant must be controlled according to the measures specified in a management plan published by the local control authority.

Class 4*

The growth and spread of the plant must be controlled according to the measures specified in a management plan published by the local control authority and the plant may not be sold, propagated or knowingly distributed.

Class 5

The requirements in the Noxious Weeds Act for a notifiable weed must be complied with.

Information courtesy of the Illawarra Noxious Weeds Authority and Southern Councils Group and the NSW Department of Primary Industries.


 
 
 
 

 
 
 
 
 

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