Weeds Index - Declared Weeds Alphabetically by Common Name

​​​​​​​​​​The declared weeds list is available below, sorted alphabetically by common name. Follow the links to find information on the weeds, including images for identification and control guides plus information sheets and management plans (where available). Note: Property managers are required by law to control declared weeds.
See also:

Table: Declared Weeds in Tasmania

Common Name

Scientific Name

African Boxthorn

Lycium ferocissimum
African Boxthorn (thumbnail) 

African Feather Grass

Cenchrus macrourus(syn. Pennisetum macrourum)
African Feathergrass (thumbnail) 

African Lovegrass

Eragrostis curvula
African Lovegrass (thumbnail) 

African Thistle

Berkheya rigida
African Thistle (thumbnail) 

Alligator Weed

Alternanthera philoxeroides
Althernanthera Philox (thumbnail) 

Amsinckia species

Amsinckia species
Amsinckia (thumbnail) 
​Angled Heath ​Erica quadrangularis


Solanum sodomaeum
Apple of Sodom (thumbnail) 


Sagittaria montevidensis
Arrowhead (thumbnail) 

Artichoke Thistle

Cynara cardunculus
Artichoke thistle (thumbnail) 

Asparagus Fern

Asparagus scandens
Asparagus Fern 

Athel Pine

Tamarix aphylla
Athelpine (thumbnail) 

Bathurst Burr

Bathurst Burr (thumbnail)

Bear-skin Fescue

Festuca gautieri
Bearskin Fescue (thumbnail) 
​Bell HeatherErica cinerea
​​Bellyache BushJatropha gossypiifolia
image of Bellyache Bush

​​Berry HeathErica baccans
​​Besom HeathErica scoparia
image of Besom Heath
​​Bicolored HeathErica discolor


Bifora testiculata
Bifora Flower (thumbnail) 


Rubus fruticosus aggregate
Blackberry (thumbnail) 

Chrysanthemoides monilifera (including subspecies)
Boneseed (thumbnail) 

Bridal Creeper

Asparagus asparagoides
Bridalcreeper (thumbnail) 
​Bridal VeilAsparagus declinatus


Orobanche species (except O. minor and O. cernua var. australiana)

Broomrape (thumbnail)


Cabomba caroliniana
Fanwort (thumbnail) 

Californian Thistle

Cirsium arvense
Californian Thistle (thumbnail) 


Tribulus terrestris
Caltrop (thumbnail) 

Canadian Pondweed, Elodea

Elodea canadensis
Canadian Pondweed (thumbnail) 
Cane Needle Grass ​Nassella hyalina

Cape Tulips

Moraea species
Cape Tulip (thumbnail) 
​Cat's Claw CreeperDolichandra unguis-cati​

Chilean Needle Grass

Nassella neesiana
​​Climbing AsparagusAsparagus africanus
Climbing Asparagus FernAsparagus plumosus
Common Crupina

Crupina vulgaris
Common crupina (thumbnail) 

Common Heliotrope

Heliotropium europaeum
Common heliotrope (thumbnail) 
​Cornish Heath ​Erica vagans

​​Corsican Heath
​Erica terminalis

Cotton Thistles

Onopordum species

Creeping Knapweed

Acroptilon repens
Creeping Knapwood (thumbnail) 

Creeping Yellowcress

Rorippa sylvestris
Creeping yellowgrass (thumbnail) 
​Cross-leaved Heath ​Erica tetralix

Crow Garlic

Allium vineale
Crow garlic (thumbnail) 

Cut-Leaf Nightshade

Solanum triflorum
Cut leaf nightshade 

Darwin's Barberry

Berberis darwinii
Darwin's barberry (thumbnail) 


Datura species


Cuscuta species (excluding Cuscuta tasmanica)
Dodder (thumbnail) 
​Dorset HeathErica ciliaris
Dorset Heath 

Egeria, Dense Water Weed

Egeria densa (syn. Elodea densa)
Egeria (thumbnail) 

Elisha's Tears

Leycesteria formosa
Elisha's tears (thumbnails) 

English Broom

Cytisus scoparius
English Broom 
​Erica species ​Erica glandulosa
​​​Erica species ​Erica holosericea

​​​Erica speciesErica melanthera


Amelichloa caudata (syn. Achnatherum caudatum)
Espartillo (thumbnail) 

False Cleavers

Galium spurium
False cleavers (thumbnail) 

False Yellowhead

Dittrichia viscosa
False yellowhead (thumbnail) 


Cenchrus longisetus(syn. Pennisetum villosum)
Feathertop (thumbnail) 


Foeniculum vulgare
​Fireweed ​Senecio madagascariensis
​​Flax-leaf BroomGenista linifolia

Floating Water Chestnut

Trapa species
Floating water chestnut (thumbnail) 
​Gamba GrassAndropogon gayanus

Giant Hogweed

Heracleum mantegazzianum
Giant hogweed (thumbnail) 


Ulex europaeus
Gorse (thumbnail) 
Ground Asparagus ​Asparagus aethiopicus


Hieracium (syn. Pilosella) species
Hawkweed (thumbnail) 


Calluna vulgaris
Heather  (thumbnail) 
​Holly ​Ilex aquifolium

Holly-leaved Senecio

Senecio glastifolius
Holly-leaved senecio (thumbnail) 


Marrubium vulgare
Horehound (thumbnail) 


Ceratophyllum demersum
Hornwort (thumbnail) 


Equisetum species
Horsetail (thumbnail) 


Hydrilla verticillata
Hydrilla (thumbnail) 


Hymenachne amplexicaulis and Hymenachne x calamitosa
weeds; pests

Innocent Weed (Spiny Burrgrass)

Cenchrus longispinus
Innocent Weed (small)
​Irish Heath ​Erica erigena

Japanese Knotweed

Fallopia japonica
Japanese knotweed (thumbnail) 


Coprosma robusta
Karamu (thumbnail) 


Bassia scoparia (syn. Kochia scoparia)
Kochia (thumbnail) 

Lagarosiphon (Oxygen Weed)

Lagarosiphon major
Lagarosiphon (thumbnail) 


Lantana camara
Lantana (thumbnail) 
Lobed Needle Grass Nassella charruana
​Madeira VineAnredera cordifolia

Mallee Cockspur

Centaurea eriophora
Mallee Cockspur (thumbnail) 

Meadow Parsley

Oenanthe pimpinelloides
Meadow parsley (thumbnail) 

Mediterranean Daisy

Urospermum dalechampii
Mediterranean daisy (thumbnail) 


Prosopis species
Mesquite (thumbnail) 


Nassella tenuissima


Miconia (thumbnail) 
​MimosaMimosa pigra

Montpellier Broom

Genista monspessulana
Montpellier broom (thumbnail)​ 

New Zealand Sedges

Carex albula, C. buchananii, C. flagellifera and C. testacea
New Zealand sedge (thumbnail) 

Nodding Thistle

Carduus nutans
Nodding thistle (thumbnail)

Onion Weed

Asphodelus fistulosus
Onion weed (thumbnail)
​Opuntioid CactiAustrocylindropuntia species
​​Opuntioid CactiCylindropuntia species
​​Opuntioid CactiOpuntia species (excluding Opuntia ficus-indica)

Pampas Grasses

Cortaderia species
Pampas (thumbnail)

Pampas Lily-of-the-Valley

Salpichroa origanifolia
Pampas Lily of the Valley (thumbnail) 


Parkinsonia aculeata
Parkinsonia (thumbnail)


Eleocharis parodii

Parrot's Feather

Myriophyllum aquaticum (syn. M. brasiliense)
Parrot's feather (thumbnail)
Parthenium Weed
Parthenium hysterophorusParthenium (thumbnail)

Paterson's Curse

Echium plantagineum L.
Paterson's curse (thumbnail)

Pond Apple

Annona glabra
Pond apple (thumbnail)

Prickly Acacia

Acacia nilotica ssp. indica
Prickly acacia (thumbnail) 
Purple Nut Grass
Cyperus rotundus
Purple Nut Grass (thumbnail)


Senecio jacobaea
Ragwort (thumbnail) 
​​Rubber Vine
Cryptostegia grandiflo
Rubber vine (thumbnail)

Saffron Thistle

Carthamus lanatus L.
Saffron thistle (thumbnail) 


Sagittaria platyphylla (syn. Sagittaria graminea)
Sagittaria graminea 
SalviniaSalvinia molestaSalvinia (thumbnail)

Senegal Tea Plant, Temple Plant

Gymnocoronis spilanthoides
Senegal tea plant (thumbnail) 
Serrated TussockNassella trichotomaSerrated tussock (thumbnail)

Silver-leaf Nightshade

Solanum elaeagnifolium
Silver-leaf nightshade (thumbnail) 

Skeleton Weed

Chondrilla juncea
Skeleton weed (thumbnail) 

Slender Thistle

Carduus pycnocephalus and
Carduus tenuiflorus

Slender thistle (thumbnail) 
Spanish HeathErica lusitanicaSpanish heath (thumbnail)

Spiny Burrgrass, (Innocent Weed)

Cenchrus longispinus and Cenchrus incertus
Spiny Burrgrass (thumbnail) 

Spiny Emex

Emex australis
Spiny Emex (thumbnail) 

Square Stemmed St John's Wort

Hypericum tetrapterum
Square-stemmed St Johns Wort (thumbnail) 

St John's Wort

Hypericum perforatum
St Johns Wort (thumbnail) 

Star Thistle

Centaurea calcitrapa
Star thistle (thumbnail) 

Stemless Thistle

Onopordum acaulon
Stemless thistle

Stinking Mayweed

Anthemis cotula
Stinking mayweed (thumbnail) 

Texas Needle Grass

Nassella leucotricha


Three-horned Bedstraw

Galium tricornutum
Three-horned bedstraw (thumbnail) 
​Tree HeathErica arborea


Amaranthus albus
Tumbleweed (thumbnail) 

Viper's Bugloss

Echium vulgare L.
Paterson's curse (thumbnail) 
​Water Heath ​Erica caffra

Water Hyacinth

Eichhornia crassipes
Water Hyacinth (thumbnail) 
​Western Cape Bridal CreeperAsparagus asparagoides Western Cape form

White Spanish Broom

Cytisus multiflorus
White Spanish Broom 

Whiteweed (Hoary Cress)

Lepidium draba
Whiteweed (hoary cress) (thumbnail) 

White-edged Nightshade

Solanum marginatum
White-edged Nightshade

Wild Rice

Zizania species
Wild rice (thumbnail) 


(Salix species, excluding S. babylonica, S. x calodendron and S. x reichardtii )
Willows (thumbnail) 
​Winter HeathErica carnea


Striga species (all non-indigenous species)
Witchweed (thumbnail) 

Yellow Nut Grass / Yellow Nut Sedge

Cyperus esculentus
Yellow nut grass (thumbnail)