Weeds

Weeds with sun in background looking through grass

Noxious weeds are plants that pose a threat to agriculture, the environment or the community and have the potential to spread to other areas. 

Under the Noxious Weeds Act 1993 City of Parramatta has power as the local control authority to inspect private land and issue orders for owners or occupiers to control noxious weeds. Failure to comply with Weed Control Notices could result in fines.

There are currently five control classes that determine how noxious weeds need to be handled.

Class 1 - State prohibited weeds

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

Common Name Scientific Name(s)
Anchored water hyacinth Eichhornia azurea
Black knapweed Centaurea nigra
Broomrapes Orobanche spp except O. cernua v.australiana and O. minor
Chinese violet Asystasia gangetica ssp micrantha
East Indian hygrophila Hygrophila polysperma
Eurasian water milfoil Myriophyllum spicatum
Hawkweed Hieracium spp
Horsetail Equisetum spp
Hymenachne Hymenachne amplexicaulis
Karoo thorn Acacia karroo
Kochia Bassia scoparia except B. scoparia ssp.trichophylla,Kochia scoparia
Lagarosiphon Lagarosiphon major
Mexican feather grass Nassella tenuissima, Stipa tenuissima
Miconia Miconia spp
Mimosa Mimosa pigra
Parthenium weed Parthenium hysterophorus
Pond apple Annona glabra
Prickly acacia Acacia nilotica
Rubbervine Cryptostegia grandiflora
Senegal tea plant Gymnocoronis spilanthoides
Siam weed Chromolaena odorata
Spotted knapweed Centaurea maculosa
Water caltrop Trapa spp
Water lettuce Pistia stratiotes
Water soldier Stratiotes aloides
Witchweed Striga spp except native species and Striga parviflora
Yellow burrhead Limnocharis flava

Class 2 - Regionally prohibited weeds

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

Common Name Scientific Name(s)
Hygrophila Hygrophila costata
Salvinia Salvinia molesta
Water hyacinth Eichhornia crassipes

Class 3 - Regionally controlled weeds 

The plant must be fully and continuously suppressed and destroyed.

Common Name Scientific Name(s)
Alligator weed Alternanthera philoxeroides
Bitou bush Chrysanthemoides monilifera ssp rotundata
Boneseed Chrysanthemoides monilifera ssp monilifera
Cape broom Genista monspessulana
Green cestrum Cestrum parqui
Long-leaf willow primrose Ludwigia longifolia
Ludwigia Ludwigia peruviana
Pampas grass Cortaderia spp

Class 4 - Locally controlled weeds

The growth of the plant must be managed in a way that reduces its numbers, spread and incidence, and continually stops reproducing. The plant must not be sold, propagated or knowingly distributed.

Common Name Scientific Name(s)
Asparagus fern Asparagus aethiopicus, A. densiflorus, Protasparagus aethiopicus
Balloon vine Cardiospermum grandiflorum
Blackberry Rubus fruticosus aggregate spp except cultivars
Bridal creeper Asparagus asparagoides, A.medeoloides, Myrsiphyllum asparagoides
Cape ivy Delairea odorata
Castor oil plant Ricinus communis
Cat's claw creeper Macfadyena unguis-cati
Chilean needle grass Nassella neesiana
Climbing asparagus fern Asparagus plumosus, Protasparagus plumosus
Giant reed /Elephant grass Arundo donax
Harrisia cactus Harrisia spp
Lantana Lantana spp
Madeira vine Anredera cordifolia
Blue Morning glory
Coastal Morning Glory
Ipomoea cairica, Ipomoea indica
Ipomoea cairica
Pellitory Parietaria judaica
Prickly pear Cylindropuntia spp, Opuntia spp except O. ficus-indica
Privet (Broad-leaf) Ligustrum lucidum
Privet (Narrow-leaf/Chinese) Ligustrum sinense
Rhizomatous bamboo Phyllostachys spp
Rhus tree Toxicodendron succedaneum, Toxicodendron succedanea
Scotch broom/English broom Cytisus scoparius
Serrated tussock Nassella trichotoma
St. John's wort Hypericum perforatum

Class 5 - Restricted Plants   

You must comply with the notifiable weed requirements in the act. The sale and spread of all noxious weeds or noxious weed material, including seeds and cuttings, is prohibited. 

Common Name Scientific Name(s)
African feather grass Pennisetum macrourum
African turnip weed Sisymbrium runcinatum, Sisymbrium thellungii
Annual ragweed Ambrosia artemisiifolia
Arrowhead Sagittaria montevidensis
Artichoke thistle Cynara cardunculus
Athel tree/Athel pine Tamarix aphylla
Bear-skin fescue Festuca gautieri, F. scoparia
Burr ragweed Ambrosia confertiflora
Cabomba Cabomba caroliniana
Cayenne snakeweed Stachytarpheta cayennensis, Stachytarpheta urticifolia
Clockweed Gaura lindheimeri, Gaura parviflora
Corn sowthistle Sonchus arvensis
Dodder Cuscuta spps except C. australis, C. tasmanica and C. victoriana
Espartillo Achnatherum brachychaetum, Stipa brachychaetum
Fine-bristled burr grass Cenchrus brownii
Fountain grass Pennisetum setaceum
Gallon's curse Cenchrus biflorus
Glaucous star thistle Carthamus glaucus
Golden thistle Scolymus hispanicus
Mexican poppy Argemone mexicana
Mossman River grass Cenchrus echinatus
Onion grass All Romulea species and varieties except R. rosea var. australis
Oxalis All Oxalis species and varieties except O. chnoodes, O. exilis, O. perennans, O. radicosa, O. rubens, and O. thompsoniae
Red rice Oryza rufipogon
Sagittaria Sagittaria platyphylla, Sagittaria graminea
Sand oat Avena strigosa
Smooth-stemmed turnip Brassica barrelieri ssp.oxyrrhina, Brassica oxyrrhina
Soldier thistle Picnomon acarna
Willows Salix species except S. babylonica, S. x reichardtii, S. x calodendron
Yellow nutgrass Cyperus esculentus

Class 1, 2 and/or 5 noxious weeds are notifiable weeds. If you detect these noxious weeds on your property you must notify the City within 3 days. 

Noxious weeds on public land

Noxious weeds are an issue in bushland reserves, along tracks, waterways and disturbed areas where weed seeds are spread by wind, water, birds, animals and even attached to the clothing of people. They cause problems by smothering native vegetation, blocking creek and river systems and severely altering their ecology and often increasing flooding.

City of Parramatta's Natural Resources Management team undertakes a combined noxious and environmental weed control program in many reserves and waterways with work undertaken by private contractors and community volunteer bushcare groups.

Tree Preservation and Noxious Weeds

All control action under the Noxious Weeds Act 1993 replaces any restrictions under Council's Tree Preservation Orders. You should have all weeds correctly identified before removal to ensure tree preservation penalties are not incurred.

more information

Contact Council's Noxious Weeds Officers on 9806 5000.
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