The following weeds are declared noxious in the control area of Pittwater Council.

The NSW Government - Department of Primary Industries has the most up to date Noxious Weeds List for all areas in NSW. Just select 'Pittwater' from the Control Area drop down menu for a list and descriptions.

African feathergrass [Pennisetum macrourum ]
Class 5 - The requirements in the Noxious Weeds Act 1993 for a notifiable weed must be complied with. This is an All of NSW declaration.

African turnipweed [Sisymbrium runcinatum ]
Class 5 - The requirements in the Noxious Weeds Act 1993 for a notifiable weed must be complied with. This is an All of NSW declaration.

African turnipweed [Sisymbrium thellungii ]
Class 5 - The requirements in the Noxious Weeds Act 1993 for a notifiable weed must be complied with. This is an All of NSW declaration.

Alligator weed [Alternanthera philoxeroides ]
Class 3 - The plant must be fully and continuously suppressed and destroyed.

Anchored water hyacinth [Eichhornia azurea ]
Class 1 - The plant must be eradicated from the land and the land must be kept free of the plant. This is an All of NSW declaration.

Annual ragweed [Ambrosia artemisiifolia ]
Class 5 - The requirements in the Noxious Weeds Act 1993 for a notifiable weed must be complied with. This is an All of NSW declaration.

Arrowhead [Sagittaria montevidensis ]
Class 5 -  The requirements in the Noxious Weeds Act 1993 for a notifiable weed must be complied with. This is an All of NSW declaration.

Artichoke thistle [Cynara cardunculus ]
Class 5 -  The requirements in the Noxious Weeds Act 1993 for a notifiable weed must be complied with. This is an All of NSW declaration.

Asparagus fern [Asparagus aethiopicus ]
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.

Athel pine [Tamarix aphylla ]
Class 5 - The requirements in the Noxious Weeds Act 1993 for a notifiable weed must be complied with. This is an All of NSW declaration.

Bear-skin fescue [Festuca gautieri ]
Class 5 - The requirements in the Noxious Weeds Act 1993 for a notifiable weed must be complied with. This is an All of NSW declaration.

Bitou bush [Chrysanthemoides monilifera subspecies rotundata ]
Class 3 -  The plant must be fully and continuously suppressed and destroyed.

Black knapweed [Centaurea nigra ]
Class 1 -  The plant must be eradicated from the land and the land must be kept free of the plant. This is an All of NSW declaration.

Blackberry [Rubus fruticosus aggregate species ]
except cultivars Black satin, Chehalem, Chester Thornless, Dirksen Thornless, Loch Ness, Murrindindi, Silvan, Smoothstem, Thornfree 
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. This is an All of NSW declaration. DPI Info Page

Boneseed [Chrysanthemoides monilifera subspecies monilifera ]
Class 3 -  The plant must be fully and continuously suppressed and destroyed.

Bridal creeper [Asparagus asparagoides ]
Class 5 -  The requirements in the Noxious Weeds Act 1993 for a notifiable weed must be complied with. This is an All of NSW declaration.

Broomrapes [Orobanche species ]
Includes all Orobanche species except the native O. cernua variety australiana and O. minor
Class 1 -  The plant must be eradicated from the land and the land must be kept free of the plant. This is an All of NSW declaration.

Burr ragweed [Ambrosia confertiflora ]
Class 5 -  The requirements in the Noxious Weeds Act 1993 for a notifiable weed must be complied with. This is an All of NSW declaration.

Cabomba [Cabomba caroliniana ]
Class 5 -  The requirements in the Noxious Weeds Act 1993 for a notifiable weed must be complied with. This is an All of NSW declaration.

Castor oil plant [Ricinus communis ]
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.

Cayenne snakeweed [Stachytarpheta cayennensis ]
Class 5 -  The requirements in the Noxious Weeds Act 1993 for a notifiable weed must be complied with. This is an All of NSW declaration.

Chilean needle grass [Nassella neesiana ]
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.

Chinese violet [Asystasia gangetica subspecies micrantha ]
Class 1 -  The plant must be eradicated from the land and the land must be kept free of the plant. This is an All of NSW declaration.

Climbing asparagus fern [Asparagus plumosus ]
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.

Clockweed [Gaura lindheimeri ]
Class 5 -  The requirements in the Noxious Weeds Act 1993 for a notifiable weed must be complied with. This is an All of NSW declaration.

Clockweed [Gaura parviflora ]
Class 5 -  The requirements in the Noxious Weeds Act 1993 for a notifiable weed must be complied with. This is an All of NSW declaration.

Corn sowthistle [Sonchus arvensis ]
Class 5 -  The requirements in the Noxious Weeds Act 1993 for a notifiable weed must be complied with. This is an All of NSW declaration.

Dodder [Cuscuta species ]
Includes All Cuscuta species except the native species C. australis, C. tasmanica and C. victoriana Class 5 -  The requirements in the Noxious Weeds Act 1993 for a notifiable weed must be complied with. This is an All of NSW declaration.

East Indian hygrophila [Hygrophila polysperma ]
Class 1 -  The plant must be eradicated from the land and the land must be kept free of the plant. This is an All of NSW declaration.

Elephant grass [Arundo donax ]  See Giant reed

Espartillo [Achnatherum brachychaetum ]
Class 5 -  The requirements in the Noxious Weeds Act 1993 for a notifiable weed must be complied with. This is an All of NSW declaration.

Eurasian water milfoil [Myriophyllum spicatum ]
Class 1 -  The plant must be eradicated from the land and the land must be kept free of the plant. This is an All of NSW declaration.

Fine-bristled burr grass [Cenchrus brownii ]
Class 5 -  The requirements in the Noxious Weeds Act 1993 for a notifiable weed must be complied with. This is an All of NSW declaration.

Fountain grass [Pennisetum setaceum ]
Class 5 -  The requirements in the Noxious Weeds Act 1993 for a notifiable weed must be complied with. This is an All of NSW declaration.

Gallon's curse [Cenchrus biflorus ]
Class 5 -  The requirements in the Noxious Weeds Act 1993 for a notifiable weed must be complied with. This is an All of NSW declaration.

Giant reed [Arundo donax ]
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.

Glaucous starthistle [Carthamus glaucus ]
Class 5 -  The requirements in the Noxious Weeds Act 1993 for a notifiable weed must be complied with. This is an All of NSW declaration.

Golden thistle [Scolymus hispanicus ]
Class 5 -  The requirements in the Noxious Weeds Act 1993 for a notifiable weed must be complied with. This is an All of NSW declaration.

Green cestrum [Cestrum parqui ]
Class 3 -  The plant must be fully and continuously suppressed and destroyed.

Harrisia cactus [Harrisia species ]
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.
This is an All of NSW declaration.

Hawkweed [Hieracium species ]
Class 1 - The plant must be eradicated from the land and the land must be kept free of the plant. This is an All of NSW declaration.

Horsetail [Equisetum species ]
Class 1 -  The plant must be eradicated from the land and the land must be kept free of the plant. This is an All of NSW declaration.

Hygrophila [Hygrophila costata ]
Class 2 -  The plant must be eradicated from the land and the land must be kept free of the plant.

Hymenachne [Hymenachne amplexicaulis ]
Class 1 -  The plant must be eradicated from the land and the land must be kept free of the plant. This is an All of NSW declaration.

Karoo thorn [Acacia karroo ]
Class 1 -  The plant must be eradicated from the land and the land must be kept free of the plant. This is an All of NSW declaration.

Kochia [Bassia scoparia ]
except Bassia scoparia subspecies trichophylla
Class 1 -  except B.scoparia subspecies trichophylla
The plant must be eradicated from the land and the land must be kept free of the plant. This is an All of NSW declaration.

Lagarosiphon [Lagarosiphon major ]
Class 1 -  The plant must be eradicated from the land and the land must be kept free of the plant. This is an All of NSW declaration.

Lantana [Lantana species ]
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.

Lantana [Lantana species ]
Class 5 -  The requirements in the Noxious Weeds Act 1993 for a notifiable weed must be complied with. This is an All of NSW declaration.

Leafy elodea [Egeria densa ]
Class 5 -  The requirements in the Noxious Weeds Act 1993 for a notifiable weed must be complied with. This is an All of NSW declaration.

Longleaf Willow Primrose  [Ludwigia longifolia ]
Class 3 -  The plant must be fully and continuously suppressed and destroyed.
Longleaf Willow Primrose  [Ludwigia longifolia ]
Class 5 -  The requirements in the Noxious Weeds Act 1993 for a notifiable weed must be complied with. This is an All of NSW declaration.

Ludwigia [Ludwigia peruviana ]
Class 3 -  The plant must be fully and continuously suppressed and destroyed.

Madeira Vine [Anredera cordifolia ]
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.

Mexican feather grass [Nassella tenuissima ]
Class 1 -  The plant must be eradicated from the land and the land must be kept free of the plant. This is an All of NSW declaration.

Mexican poppy [Argemone mexicana ]
Class 5 -  The requirements in the Noxious Weeds Act 1993 for a notifiable weed must be complied with. This is an All of NSW declaration.

Miconia [Miconia species ]
Class 1 -  The plant must be eradicated from the land and the land must be kept free of the plant. This is an All of NSW declaration.

Mimosa [Mimosa pigra ]
Class 1 -  The plant must be eradicated from the land and the land must be kept free of the plant. This is an All of NSW declaration.

Morning glory (coastal) [Ipomoea cairica ]
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.

Morning glory (purple) [Ipomoea indica ]
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.

Mossman River grass [Cenchrus echinatus ]
Class 5 -  The requirements in the Noxious Weeds Act 1993 for a notifiable weed must be complied with. This is an All of NSW declaration.

Moth Vine [Araujia sericifera ]
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.

Ochna [Ochna serrulata ]
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.

Onion grass [Romulea species ]
Includes all Romulea species and varieties except R. rosea var. australis.
Class 5 -  The requirements in the Noxious Weeds Act 1993 for a notifiable weed must be complied withThis is an All of NSW declaration.

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 Class 5 -  The requirements in the Noxious Weeds Act 1993 for a notifiable weed must be complied with. This is an All of NSW declaration.

Pampas Grass [Cortaderia species ]
Class 3 -  The plant must be fully and continuously suppressed and destroyed

Parthenium weed [Parthenium hysterophorus ]
Class 1 -  The plant must be eradicated from the land and the land must be kept free of the plant. This is an All of NSW declaration.

Pellitory / Asthma Weed  [Parietaria judaica ]
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.

Pond apple [Annona glabra ]
Class 1 -  The plant must be eradicated from the land and the land must be kept free of the plant. This is an All of NSW declaration.

Prickly acacia [Acacia nilotica ]
Class 1 -  The plant must be eradicated from the land and the land must be kept free of the plant. This is an All of NSW declaration.

Prickly pear [Cylindropuntia species ]
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.
This is an All of NSW declaration.

Prickly Pears [Opuntia species except O. ficus-indica ]
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.
This is an All of NSW declaration.

Privet (Broad leafed)  [Ligustrum lucidum ]
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.

Privet (Narrow-leaf/Chinese) [Ligustrum sinense ]
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.

Red rice [Oryza rufipogon ]
Class 5 -  The requirements in the Noxious Weeds Act 1993 for a notifiable weed must be complied with. This is an All of NSW declaration.

Rhizomatus Bamboo [Phyllostachys species ]
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.

Rhus tree [Toxicodendron succedaneum ]
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
This is an All of NSW declaration.

Rubbervine [Cryptostegia grandiflora ]
Class 1 -  The plant must be eradicated from the land and the land must be kept free of the plant. This is an All of NSW declaration.

Sagittaria [Sagittaria platyphylla ]
Class 5 -  The requirements in the Noxious Weeds Act 1993 for a notifiable weed must be complied with. This is an All of NSW declaration.

Salvinia [Salvinia molesta ]
Class 2 -  The plant must be eradicated from the land and the land must be kept free of the plant.

Sand oat [Avena strigosa ]
Class 5 -  The requirements in the Noxious Weeds Act 1993 for a notifiable weed must be complied with. This is an All of NSW declaration.

Senegal Tea Plant [Gymnocoronis spilanthoides ]
Class 1 -  The plant must be eradicated from the land and the land must be kept free of the plant. This is an All of NSW declaration.

Serrated tussock [Nassella trichotoma ]
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.

Siam Weed [Chromolaena odorata ]
Class 1 -  The plant must be eradicated from the land and the land must be kept free of the plant. This is an All of NSW declaration.

Smooth-stemmed turnip [Brassica barrelieri subspecies oxyrrhina ]
Class 5 -  The requirements in the Noxious Weeds Act 1993 for a notifiable weed must be complied with. This is an All of NSW declaration.

Soldier thistle [Picnomon acarna ]
Class 5 -  The requirements in the Noxious Weeds Act 1993 for a notifiable weed must be complied with. This is an All of NSW declaration.

Spotted knapweed [Centaurea maculosa ]
Class 1 -  The plant must be eradicated from the land and the land must be kept free of the plant. This is an All of NSW declaration.

St. John's wort [Hypericum perforatum ]
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.

Texas blueweed [Helianthus ciliaris ]
Class 5 -  The requirements in the Noxious Weeds Act 1993 for a notifiable weed must be complied with. This is an All of NSW declaration.

Turkey rhubarb [Acetosa sagittata ]
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.

Tussock paspalum [Paspalum quadrifarium ]
Class 3 -  The plant must be fully and continuously suppressed and destroyed.

Water caltrop [Trapa species ]
Class 1 -  The plant must be eradicated from the land and the land must be kept free of the plant. This is an All of NSW declaration.

Water hyacinth [Eichhornia crassipes ]
Class 2 -  The plant must be eradicated from the land and the land must be kept free of the plant.

Water lettuce [Pistia stratiotes ]
Class 1 -  The plant must be eradicated from the land and the land must be kept free of the plant. This is an All of NSW declaration.

Water soldier [Stratiotes aloides ]
Class 1 -  The plant must be eradicated from the land and the land must be kept free of the plant. This is an All of NSW declaration.

Willows [Salix species ]
Includes all Salix species except S. babylonica, S. x reichardtii, S. x calodendron
Class 5 -  The requirements in the Noxious Weeds Act 1993 for a notifiable weed must be complied with. This is an All of NSW declaration.

Witchweed [Striga species ]
Includes all Striga species except native species and Striga parviflora
Class 1 -  The plant must be eradicated from the land and the land must be kept free of the plant. This is an All of NSW declaration.

Yellow burrhead [Limnocharis flava ]
Class 1 -  The plant must be eradicated from the land and the land must be kept free of the plant. This is an All of NSW declaration.

Yellow nutgrass [Cyperus esculentus ]
Class 5 -  The requirements in the Noxious Weeds Act 1993 for a notifiable weed must be complied with. This is an All of NSW declaration.

Updated: 11 Jan 2012