Declared Weeds
Information on how to identify and control declared weeds is available from the NRETA Weed Management Branch in your region.
| Location | Phone |
|---|---|
| Darwin | (08) 8999 4567 |
| Katherine | (08) 8973 8107 |
| Timber Creek | (08) 8975 0307 |
| Borroloola | (08) 8975 8752 |
| Tennant Creek | (08) 8962 4495 |
| Alice Springs | (08) 8951 9210 |
Biological control - (08) 8999 2327
E-mail - weedinfo.nreta@nt.gov.au
Schedule of classes
| A | To be eradicated | reasonable effort must be made to eradicate the plant within the NT |
| B | Growth and spread to be controlled | Reasonable attempts must be made to contain the growth and prevent the movement of the plant |
| C | Not to be introduced to the Territory | All Class A and Class B weeds are also considered to be Class C weeds. |
*Area to which declaration applies is all of the Northern Territory unless otherwise stated.
Schedule Class A / C*
Botanical Name |
Common Name |
Acacia catechu |
Cutch tree |
Acacia nilotica |
Prickly acacia |
Alternanthera philoxeroides |
Alligator weed |
| Andropogon gayanus | Gamba grass (click for details on region where Class A/C declaration applies) |
Annona glabra |
Pond Apple |
Asparagus asparagoides |
Bridal creeper |
Asphodelus fistulosus |
Onion weed |
Barleria prionitis |
Baleria |
| Cabomba spp. | Cabomba |
| Chrysanthemoides monilifera | Bitou bush/Boneseed |
| Cryptostegia spp. | Rubbervine |
Dalbergia sissoo |
Dalbergia |
| Datura ferox | Longspine thornapple |
| Echium plantagineum | Paterson's curse |
| Eichhornia crassipes | Water hyacinth |
| Jatropha curcas | Physic nut |
| Lycium ferocissimum | African boxthorn |
Martynia annua |
Devil's claw |
Mimosa pigra |
Mimosa, giant sensitive plant |
Nassella neesiana |
Chilean needle grass |
Nassella trichotoma |
Serrated Tussock |
| Parthenium hysterophorus | Parthenium weed |
Prosopis spp. |
Mesquite |
Rubus fruticose agg. |
Blackberry |
Salix spp. except S. babylonica, S. X calodendron & S. X reichardtiji |
Willows (except weeping willows, pussy willow and sterile pussy willow) |
Ulex europaeus |
Gorse |
Ziziphus mauritiana |
Chinee apple, Indian jujube |
Schedule Class B / C
Botanical name |
Common Name |
Acanthospermum hispidum |
Star burr, goat's head |
Alternanthera pungens |
Khaki weed |
| Andropogon gayanus | Gamba grass (click for details on region where Class B/C declaration applies) |
Argemone ochroleuca |
Mexican poppy |
Calotropis procera |
Rubber bush |
Carthamus lanatus |
Saffron thistle |
Cenchrus echinatus |
Mossman River grass |
Emex australis |
Spiny emex |
Hymenachne amplexicaulis |
Olive hymenachne |
Hyptis capitata |
Knob weed |
Hyptis suaveolens |
Hyptis |
Jatropha gossypifolia |
Bellyache bush |
| Lantana camara | Common lantana |
Lantana montevidensis |
Creeping lantana |
Leonotis nepetifolia |
Lion's tail |
Mimosa pigra |
Mimosa, giant sensitive plant |
Mimosa pudica |
Common sensitive plant |
Opuntia spp. |
Prickly pears |
| Parkinsonia aculeata | Parkinsonia |
Pennisetum polystachion |
Mission grass |
Pistia stratiotes |
Water lettuce |
Ricinus communis |
Castor oil plant |
Salvinia molesta |
Salvinia |
| Senna alata | Candle bush |
Senna obtusifolia |
Sicklepod |
Senna occidentalis |
Coffee senna |
Sida acuta |
Spinyhead sida |
Sida cordifolia |
Flannel weed |
Sida rhombifolia |
Paddy's lucerne |
| Stachytarpheta spp. | Snake weeds |
Tamarix aphylla |
Tamarisk, Athel pine |
Themeda quadrivalvis |
Grader grass |
Tribulus cistoides |
Caltrop |
Tribulus terrestris |
Caltrop |
Xanthium occidentale |
Noogoora burr |
Xanthium spinosum |
Bathurst burr |
Schedule Class C
(Includes all class A and class B invasive weeds)
Botanical Name |
Common Name |
Acroptilon repens |
Creeping knapweed |
Ageratina riparia |
Mistflower |
| Amaranthus dubius | Chinese Spinach |
Ambrosia artemisiifolia |
Annual ragweed |
Ambrosia psilostachya |
Perennial ragweed |
| Andropogon gayanus | Gamba grass |
| Austroeupatorium inulaefolium | |
Baccharis halimifolia |
Groundsel bush |
| Boerhavia erecta | |
| Brachiaria paspaloides | Common Brachiaria, Thurston grass |
Chromolaena odorata |
Siam Weed, Christmas bush |
| Clidemia hirta | Koster's curse, Soap bush |
| Coix aquatica | Job's tears |
| Croton hirtus | |
Datura spp. |
Thornapples |
| Digitaria fuscescens | Common Crabgrass |
| Digitaria insularis | |
| Diodia sarmentosa | |
| Echinochloa glabrescens | a Barnyard grass |
| Echinochloa stagnina | |
Egeria densa |
Dense waterweed |
Elodea canadensis |
Canadian pondweed |
| Equisetum ramosissimum | Horsetail, Scouring rush |
| Equisetum spp. | Horsetails |
| Eriocaulon truncatum | |
Eriocereus martinii |
Harrisia cactus |
| Eriochloa polystachya | Carib grass |
| Fimbristylis umbellaris | Globular Fimbristylis |
| Hybanthus attenuatus | |
| Hyptis brevipes | Lesser Roundweed |
| Ischaemum timorense | Centipede grass |
| Kochia | Burning bush |
| Kochia scoparia (all except subsp. Trichopyla) | |
Lagarosiphon major |
Lagarosiphon |
| Leptochloa chinensis | Red sprangletop, Feathergrass |
| Leptochloa panicea | Sprangletop |
| Limnocharis flava | Yellow burrhead, yellow sawah lettuce |
| Miconia spp. | Velvet tree |
| Mikania cordata | |
| Mikania micrantha | Mile a minute |
Mimosa invisa |
Giant sensitive plant |
| Myriophyllum spicatum | Erasian watermilfoil |
| Orabanche spp. (all except O.minor and O.cernua var.australiana) | Broomrape |
| Paederia foetida | Lesser Malayan stinkwort |
| Piper aduncum | |
| Rhodomyrtus tomentosa | Downy rose myrtle |
| Rotala indica | Toothcup |
| Sacciolepis interrupta | |
| Salvinia cucullata | Salvinia |
| Salvinia natans | Salvinia |
| Schoenoplectus juncoides | |
| Scirpus maritimus | |
Sorghum halepense |
Johnson grass |
| Spermacoce mauritiana | |
| Striga angustifolia | Witchweed |
| Striga asiatica | Witchweed |
| Striga spp. (all non-indigenous) | Witchweed |
| Trapa spp. | Floating Water Chestnut |
Xanthium spp. |
Burrs |
The Weed Risk Assessment (WRA) process is currently evaluating existing weeds on this list as well as new invasive species.
The Northern Territory Weed Management Act 2001 determines weed management responsibilities.
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