WeedScan priority list
Afghan melon (Citrullus lanatus)
African boxthorn (Lycium ferocissimum)
African feathergrass (Cenchrus macrourus)
African lovegrass (Eragrostis curvula)
African olive (Olea europaea subsp. cuspidata)
African rue (Peganum harmala)
African turnip weed (Sisymbrium thellungi)
Aleppo pine (Pinus halepensis)
Alisma (Alisma lanceolatum)
Alkali sida (Malvella leprosa)
Alligator weed (Alternanthera philoxeroides)
Amsinckia (Amsinckia species)
Anchored water hyacinth (Eichhornia azurea)
Apple of Sodom (Solanum linnaeanum)
Arum lily (Zantedeschia aethiopica)
Athel pine (Tamarix aphylla)
Austrocylindropuntia cacti (Austrocylindropuntia species)
Awnless barnyard grass (Echinochloa colona)
Azarola (Crataegus sinaica)
Barbary fig (Opuntia ficus-indica)
Barley grass (Hordeum leporinum)
Bathurst burr (Xanthium spinosum)
Bellyache bush (Jatropha gossypiifolia)
Bent grass (Agrostis capillaris)
Berry heath (Erica baccans)
Besom heath (Erica scoparia)
Bifora (Bifora testiculata)
Bitou bush (Chrysanthemoides monilifera subsp. rotundata)
Bitter weed (Helenium amarum)
Black knapweed (Centaurea x moncktonii)
Black willow (Salix nigra)
Blackberry (Rubus anglocandicans)
Blackberry (Rubus fruticosus species aggregate)
Bladder campion (Silene vulgaris)
Bladder ketmia (Hibiscus trionum)
Blue hound’s tongue (Cynoglossum creticum)
Blue mustard (Chorispora tenella)
Blue periwinkle (Vinca major)
Bluebell creeper (Billardiera heterophylla)
Boar thistle (Cirsium vulgare)
Boneseed (Chrysanthemoides monilifera subsp. monilifera)
Box elder (Acer negundo)
Boxing glove cactus (Cylindropuntia fulgida var. mamillata)
Bridal creeper (Asparagus asparagoides)
Bridal veil creeper (Asparagus declinatus)
Broad kernel espartillo (Amelichloa caudata)
Broad-leaf pepper tree (Schinus terebinthifolius)
Brome grass (Bromus alopecuros)
Broomrapes (Orobanche species)
Buffel grass (Cenchrus ciliaris)
Buffel grass (Cenchrus pennisetiformis)
Bulbil watsonia (Watsonia meriana var. bulbillifera)
Bundy blackberry (Rubus laudatus)
Bunny ears (Opuntia microdasys)
Burr ragweed (Ambrosia confertiflora)
Button grass (Dactyloctenium radulans)
Cabomba (Cabomba caroliniana)
Calomba daisy (Oncosiphon suffruticosum)
Calotrope (Calotropis procera)
Camel thorn (Alhagi maurorum)
Canadian fleabane (Conyza canadensis)
Candle bush (Senna alata)
Candle cholla (Cylindropuntia kleiniae)
Cane needle grass (Nassella hyalina)
Cape broom (Genista monspessulana)
Cape weed (Arctotheca calendula)
Carrion flower (Orbea variegata)
Cat’s claw creeper (Dolichandra unguis-cati)
Chilean needle grass (Nassella neesiana)
Chincherinchee (Ornithogalum thyrsoides)
Chinee apple (Ziziphus mauritiana)
Chinese knotweed (Persicaria chinensis)
Chinese violet (Asystasia gangetica subsp. micrantha)
Cleavers (Galium aparine)
Climbing asparagus fern (Asparagus plumosus)
Climbing bluebell creeper (Billardiera fusiformis)
Clockweed (Oenothera curtiflora)
Coastal tea-tree (Leptospermum laevigatum)
Common barnyard grass (Echinochloa crus-galli)
Common lantana (Lantana camara)
Common thornapple (Datura stramonium)
Coolatai grass (Hyparrhenia hirta)
Coral cactus (Austrocylindropuntia cylindrica)
Cream-flowered Mexican poppy (Argemone ochroleuca)
Creeping knapweed (Rhaponticum repens)
Creeping lantana (Lantana montevidensis)
Cutleaf mignonette (Reseda lutea)
Cylindropuntia cacti (Cylindropuntia species)
Desert ash (Fraxinus angustifolia)
Devil’s fig (Solanum torvum)
Devil’s rope (Cylindropuntia imbricata)
Distichlis (Distichlis spicata)
Dodder (Cuscuta species)
Dog rose (Rosa canina)
Drooping prickly pear (Opuntia monacantha)
Dune onionweed (Trachyandra divaricata)
East Indian hygrophila (Hygrophila polysperma)
Elmleaf blackberry (Rubus ulmifolius)
Elodea (Elodea canadensis)
Erect pricky pear (Opuntia stricta)
Eurasian water milfoil (Myriophyllum spicatum)
Eve’s pin cactus (Austrocylindropuntia subulata)
Evergreen buckthorn (Rhamnus alaternus)
False caper (Euphorbia terracina)
Feathertop Rhodes grass (Chloris virgata)
Fever tree (Vachellia xanthophloea)
Field bindweed (Convolvulus arvensis)
Field garlic (Allium vineale)
Fireweed (Senecio madagascariensis)
Flaxleaf broom (Genista linifolia)
Flaxleaf fleabane (Conyza bonariensis)
Floating water chestnut (Trapa species)
Fountain grass (Cenchrus setaceus)
Frogbit (Limnobium laevigatum)
Gamba grass (Andropogon gayanus)
Gazania (Gazania species)
Giant arrowhead (Sagittaria montevidensis)
Giant devil’s fig (Solanum chrysotrichum)
Giant Parramatta grass (Sporobolus fertilis)
Giant rat’s tail grass (Sporobolus pyramidalis)
Giant rat’s tail trass (Sporobolus natalensis)
Giant reed (Arundo donax)
Globe chamomile (Oncisiphon piluliferum)
Glory lily (Gloriosa superba)
Glush weed (Hygrophila costata)
Golden dodder (Cuscuta campestris)
Gorse (Ulex europaeus)
Grader grass (Themeda quadrivalvis)
Great brome (Bromus diandrus)
Grey sallow (Salix cinerea)
Ground asparagus (Asparagus aethiopicus)
Groundsel bush (Baccharis halimifolia)
Hairy sicklepod (Senna hirsuta)
Harrisia cactus (Harrisia species)
Hawkweeds (Pilosella species)
Hawthorn (Crataegus monogyna)
Heather (Calluna vulgaris)
Hoary cress (Lepidium draba)
Holly-leaved senecio (Senecio glastifolius)
Horehound (Marrubium vulgare)
Horsetails (Equisetum species)
Hudson pear (Cylindropuntia pallida)
Hudson pear (Cylindropuntia tunicata)
Hydrocotyl (Hydrocotyle ranunculoides)
Hymenachne (Hymenachne amplexicaulis and hybrids)
Hymenachne (Hymenachne x calamitosa)
Illyrian thistle (Onopordum illyricum)
Indian hedge mustard (Sisymbrium orientale)
Japanese knotweed (Fallopia japonica)
Japanese walnut (Juglans ailantifolia)
Java bean (Senna tora)
Karamu (Coprosma robusta)
Karroo thorn (Vachellia karroo)
Kei apple (Dovyalis caffra)
Keriberry (Rubus rugosus)
Khaki weed (Alternanthera pungens)
Kidney-leaf mud plantain (Heteranthera reniformis)
Kochia (Bassia scoparia)
Kochia (Kochia scoparia)
Koster’s curse (Clidemia hirta)
Kudzu (Pueraria lobata)
Lagarosiphon (Lagarosiphon major)
Laurel clockvine (Thunbergia laurifolia)
Leaf cactus (Pereskia aculeata)
Leafy elodea (Egeria densa)
Leucaena (Leucaena leucocephala)
Lincoln weed (Diplotaxis tenuifolia)
Lobed needle grass (Nassella charruana)
Long-leaved willow primrose (Ludwigia longifolia)
Ludwigia (Ludwigia peruviana)
Madeira vine (Anredera cordifolia)
Mahonia (Berberis lomariifolia)
Marshmallow (Malva parviflora)
Mesquite (Prosopis species)
Mexican bean tree (Cecropia species)
Mexican feather grass (Nassella tenuissima)
Miconia (Miconia species)
Mikania vine (Mikania micrantha)
Mimosa (Mimosa pigra)
Ming asparagus fern (Asparagus macowanii var. zuluensis)
Mirror bush (Coprosma repens)
Monkey’s comb (Pithecoctenium crucigerum)
Mother-of-millions (Bryophyllum species)
Muskweed (Myagrum perfoliatum)
Mysore thorn (Caesalpinia decapetala)
Narrow kernel espartillo (Amelichloa brachychaeta)
Narrow-leaved cotton bush (Gomphocarpus fruiticosus)
Navua sedge (Cyperus aromaticus)
Neem tree (Azadirachta indica)
Nightstock (Matthiola longipetala)
Nodding thistle (Carduus nutans subsp. nutans)
Noogoora burr (Xanthium occidentale)
Noogoora burrs (Xanthium strumarium)
Northern barley grass (Hordeum glaucum)
Nutgrass (Cyperus rotundus)
Old man’s beard (Clematis vitalba)
One-leaf cape tulip (Moraea flaccida)
Opuntia cacti (Opuntia species)
Ornamental asparagus (Asparagus africanus)
Pampas grass (Cortaderia species)
Paper mulberry (Broussonetia papyrifera)
Parkinsonia (Parkinsonia aculeata)
Parrot’s feather (Myriophyllum aquaticum)
Parthenium weed (Parthenium hysterophorus)
Paterson’s curse (Echium plantagineum)
Peppercorn (Schinus species)
Perennial ground cherry (Physalis longifolia)
Perennial sea lavender (Limonium sinuatum)
Perennial thistle (Cirsium arvense)
Plains prickly pear (Opuntia polyacantha)
Plumerillo (Jarava plumose)
Poison buttercup (Ranunculus sceleratus)
Poison ivy (Toxicodendron radicans)
Polygala (Polygala myrtifolia)
Pond apple (Annona glabra)
Prarie ground cherry (Physalis hederifolia)
Praxelis (Praxelis clematidea)
Prickly acacia (Vachellia nilotica)
Prickly lettuce (Lactuca saligna)
Prickly paddy melon (Cucumis myriocarpus)
Prickly sowthistle (Sonchus asper)
Puberula cactus (Opuntia puberula)
Purple witchweed (Striga hermonthica)
Ragweeds (Ambrosia species)
Ragwort (Senecio jacobaea)
Recurved thornapple (Datura inoxia)
Red sesbania (Sesbania punicea)
Red witchweed (Striga asiatica)
Red-flowered prickly pear (Opuntia elatior)
Rhus tree (Toxicodendron succedaneum)
Riverina pear (Opuntia elata)
Rubber vine (Cryptostegia grandiflora)
Saffron thistle (Carthamus lanatus)
Sagittaria (Sagittaria platyphylla)
Salt cedar (Tamarix ramosissima)
Salvinia (Salvinia molesta)
Salvinia (Salvinia species)
Scotch broom (Cytisus scoparius subsp. scoparius)
Scotch thistle (Onopordum acanthium)
Sea spurge (Euphorbia paralias)
Seeded banana (Musa species)
Senegal tea plant (Gymnocoronis spilanthoides)
Serrated tussock (Nassella trichotoma)
Shoebutton ardisia (Ardisia elliptica)
Siam weed (Chromolaena odorata)
Sicklepod (Senna obtusifolia)
Sicklethorn (Asparagus falcatus)
Silverleaf nightshade (Solanum elaeagnifolium)
Singapore daisy (Spagneticola trilobata)
Siscilian sea lavender (Limonium hyblaeum)
Skeleton weed (Chondrilla juncea)
Skunk vine (Paederia foetida)
Small-flowered tamarisk (Tamarix parviflora)
Snakefeather (Asparagus scandens)
South African weed orchid (Disa bracteata)
Sowthistle (Sonchus oleraceous)
Spanish broom (Spartium junceum)
Spanish heath (Erica lusitanica)
Spiked pepper (Piper aduncum)
Spiny burrgrass (Cenchrus longispinus)
Spiny emex (Emex australis)
Spiny rush (Juncus acutus)
Spongeplant (Limnobium spongia)
Spotted knapweed (Centaurea stoebe subsp. micranthos)
St. John’s wort (Hypericum perforatum)
Stemless thistle (Onopordum acaulon)
Stinking lovegrass (Eragrostis cilianensis)
Stinkwort (Dittrichia graveolens)
Swamp oak (Casuarina glauca)
Swamp oak (Casuarina obesa)
Sweet briar (Rosa rubiginosa)
Sweet pittosporum (Pittosporum undulatum)
Sweet summer grass (Moonochloa eruciformis)
Tall fleabane (Conyza sumatrensis)
Taurian thistle (Onopordum tauricum)
Texas needle grass (Nassella leucotricha)
Texas prickly pear (Opuntia engelmannii)
Thatch grass (Hyparrhenia rufa)
Three cornered garlic (Allium triquetrum)
Three-horned bedstraw (Galium tricornutum)
Tobacco bush (Solanum mauritianum)
Tobacco weed (Elephantopus mollis)
Tree heath (Erica arborea)
Tropical soda apple (Solanum viarum)
Turnip weed (Rapistrum rugosum)
Two-leaf cape tulip (Moraea miniata)
Variable groundsel (Senecio lautus)
Variegated thistle (Silybum marianum)
Velvet mesquite (Prosopis x glandulosa subsp. velutina)
Velvet tree pear (Opuntia tomentosa)
Viper’s bugloss (Echium vulgare)
Water caltrop (Trapa natans)
Water dropwort (Oenanthe pimpinelloides)
Water hyacinth (Eichhornia crassipes)
Water lettuce (Pistia stratiotes)
Water lilies (Nymphaea species)
Water mimosa (Neptunia oleracea)
Water soldier (Stratiotes aloides)
Water star grass (Heteranthera zosterifolia)
Wheel cactus (Opuntia robusta)
White blackberry (Rubus niveus)
White Spanish broom (Cytisus multiflorus)
White weeping broom (Retama monosperma)
White-edged nightshade (Solanum marginatum)
Wild artichoke (Cynara cardunculus)
Wild oats (Avena species)
Wild radish (Raphanus raphanistrum)
Wild turnip (Brassica tournefortii)
Willow rhus (Searsia lancea)
Willow-leaved lettuce (Lactuca serriola)
Willows (Salix species)
Windmill grass (Chloris truncata)
Winged sea lavender (Limonium lobatum)
Witchweeds (Striga species)
Yellow bells (Tecoma stans)
Yellow burrhead (Limnocharis flava)
Yellow nutgrass (Cyperus esculentus)
Yellow oleander (Cascabela thevetia)
Yellow-flowered Mexican poppy (Argemone mexicana)