| Common Name | Scientific Name | | | |
| African Clubmoss | Selaginella kraussiana | | | |
| African Cornflag | Chasmanthe floribunda | Description | Photograph | Diagram |
| African rue | Peganum harmala | Description | Photograph | Diagram |
| Agapanthus | Agapanthus praecox | Description | Photograph | Diagram |
| Agonis | Agonis species | Description | Photograph | Diagram |
| Alligator Weed | Alternanthera philoxeroides | Description | Photograph | Diagram |
| Amaranth | Amaranthus species | Description | Photograph | Diagram |
| Amaranth; Dwarf | Amaranthus macrocarpus | Description | Photograph | Diagram |
| Amaranth; Green | Amaranthus viridis | Description | Photograph | Diagram |
| Amaranth; Native | Amaranthus interruptus | Description | Photograph | Diagram |
| Amaranth; Powell's | Amaranthus powellii | Description | Photograph | Diagram |
| Amaranth; Redroot | Amaranthus retroflexus | Description | Photograph | Diagram |
| Apple of Sodom | Solanum linnaeanum | Description | Photograph | Diagram |
| Arum Lily | Zantedeschia aethiopica | Description | Photograph | Diagram |
| Asparagus | Asparagus officinalis | Description | Photograph | Diagram |
| Asparagus Fern | Asparagus scandens | | | |
| Asparagus Fern; Climbing | Asparagus plumosus | Description | | Diagram |
| Asparagus; Ground | Asparagus aethiopicus | | | |
| Athel Pine | Tamarix aphylla | | Photograph | |
| Baboon flower (Babiana) | Babiana angustifolia | Description | | Diagram |
| Baby's Breath | Gypsohila paniculata | Description | Photograph | Diagram |
| Bamboo; Heavenly | Nandina domestica | Description | Photograph | Diagram |
| Barley Grass | Hordeum leporinum | Description | Photograph | Diagram |
| Barley; Volunteer | Hordeum vulgare | Description | Photograph | Diagram |
| Barnyard Grass | Echinochloa crus-galli | Description | Photograph | Diagram |
| Bartsia; Common | Parentucellia latifolia | Description | Photograph | Diagram |
| Bartsia; Sticky | Parentucellia viscosa | Description | Photograph | Diagram |
| Bartsia; White | Bellardia trixago | Description | Photograph | Diagram |
| Bean; Faba | Vicia faba | Description | Photograph | Diagram |
| Bean; Mung | Vigna radiata | Description | Photograph | Diagram |
| Bean; Narbon | Vicia narbonensis | Description | Photograph | Diagram |
| Beardgrass; Annual | Polypogon monspeliensis | Description | Photograph | Diagram |
| Bedstraw; Three horned | Galium tricornutum | Description | Photograph | Diagram |
| Bent; Braventop | Agrostis capillaris | Description | Photograph | Diagram |
| Bifora | Bifora testiculata | Description | Photograph | Diagram |
| Bindweed; Australian | Convolvulus erubescens | Description | Photograph | Diagram |
| Bindweed; Black | Fallopia convolvulus | Description | Photograph | Diagram |
| Bindweed; Field | Convolvulus arvensis | Description | Photograph | Diagram |
| Bindweed; Greater | Calystegia sepium & silvatica | Description | Photograph | Diagram |
| Biserrula; Volunteer | Biserrula pelicinus | Description | Photograph | Diagram |
| Bittercress; Common | Cardamine hirsuta | Description | Photograph | Diagram |
| Black Flag | Ferraria crispa | Description | Photograph | Diagram |
| Blackberry | Rubus fruticosus | Description | Photograph | |
| Blackberry; Cutleaf | Rubus laciniatus | | | |
| Blackberry; Elmleaf | Rubus ulmifolius | Description | | Diagram |
| Blackberry; English | Rubus anglocandicans | Description | | |
| Blackberry; Plains | Rubus laudatus | | | |
| Blackwood | Acacia melanoxylon | Description | | Diagram |
| Bladder Ketmia | Hibiscus trionum | Description | Photograph | Diagram |
| Blady Grass | Imperata cylindrica | Description | Photograph | Diagram |
| Bleeding Heart | Homalanthus novo-guineensis | | | |
| Blind Grass | Stypandra glauca | | | |
| Blister Bush | Rhadinothamnus anceps | Description | Photograph | Diagram |
| Boggabri | Chenopodium carinatum | Description | Photograph | Diagram |
| Boggabri Weed | Amaranthus mitchellii | Description | Photograph | Diagram |
| Boneseed | Chrysanthemoides monilifera | Description | Photograph | Diagram |
| Boxthorn; African | Lycium ferocissimum | Description | Photograph | Diagram |
| Bracelet Honey Myrtle | Melaleuca armillaris | Description | | Diagram |
| Bracken | Pteridium esculentum | Description | Photograph | Diagram |
| Briar; Sweet | Rosa rubiginosa | Description | Photograph | Diagram |
| Bridal Creeper | Asparagus asparagoides | Description | Photograph | Diagram |
| Bridal Veil | Asparagus declinatus | Description | | Diagram |
| Brome Grass | Bromus species | Description | Photograph | Diagram |
| Brome; Drooping | Bromus tectorum | Description | Photograph | Diagram |
| Brome; False | Brachypodium distachyon | Description | Photograph | Diagram |
| Brome; Great | Bromus diandrus | Description | Photograph | Diagram |
| Brome; Great M(Glyph)Resistant | Bromus diandrus | Description | Photograph | Diagram |
| Brome; Madrid | Bromus madritensis | Description | Photograph | Diagram |
| Brome; Red | Bromus rubens | Description | Photograph | Diagram |
| Brome; Sand | Bromus arenarius | Description | Photograph | Diagram |
| Brome; Soft | Bromus hordeaceus | Description | Photograph | Diagram |
| Broom | Cytisus scoparius | Description | Photograph | Diagram |
| Broom; Montpellier | Genista monspessulana | Description | Photograph | Diagram |
| Broom; White Weeping | Retama raetam | | | |
| Broomrape; Australian | Orobanche cernua | Description | Photograph | Diagram |
| Broomrape; Branched | Orobanche ramosa | Description | Photograph | Diagram |
| Broomrape; Lesser | Orobanche minor | Description | Photograph | Diagram |
| Buchan Weed | Hirschfeldia incana | Description | Photograph | Diagram |
| Buckthorn | Rhamnus alaternus | | | |
| Buckwheat | Fagopyrum esculentum | Description | Photograph | Diagram |
| Buddleja | Buddleja madagascariensis | Description | Photograph | Diagram |
| Buffalo Grass | Stenotaphrum secundatum | Description | Photograph | Diagram |
| Buffel Grass | Cenchrus ciliaris | Description | Photograph | Diagram |
| Bugloss; Vipers | Echium vulgare | Description | Photograph | Diagram |
| Burr; Bathurst | Xanthium spinosum | Description | Photograph | Diagram |
| Burr; Noogoora | Xanthium occidentale | Description | Photograph | Diagram |
| Burrgrass; Hillside | Cenchrus caliculatus | Description | Photograph | Diagram |
| Burrgrass; Spiny | Cenchrus longispinus | Description | Photograph | Diagram |
| Burrweed; Yellow | Amsinckia calycina | Description | Photograph | Diagram |
| Buttercup; Australian | Ranunculus lappaceus | Description | Photograph | Diagram |
| Buttercup; Creeping | Ranunculus repens | Description | Photograph | Diagram |
| Buttercup; Sharp | Ranunculus muricatus | Description | Photograph | Diagram |
| Button Grass | Dactyloctenium radulans | | | |
| Cabomba | Cabomba caroliniana | | | |
| Cactus; Harrisia | Eriocereus martinii | Description | Photograph | Diagram |
| Calandrinia; Purple | Calandrinia ciliata | Description | Photograph | Diagram |
| Calotrope | Calotropis procera | Description | Photograph | Diagram |
| Caltrop | Tribulus terrestris | Description | Photograph | Diagram |
| Camel Thorn | Alhagi maurorum | Description | Photograph | Diagram |
| Canary Creeper | Senecio angulatus | Description | Photograph | Diagram |
| Canary grass | Phalaris canariensis | Description | Photograph | Diagram |
| Canary grass; Lesser | Phalaris minor | Description | Photograph | Diagram |
| Canary Grass; Reed | Phalaris arundinacea | Description | Photograph | Diagram |
| Canola; Glyphosate tolerant | Brassica napus var. napus | Description | Photograph | Diagram |
| Canola; Imadazolinone tolerant | Brassica napus var. napus | Description | Photograph | Diagram |
| Canola; Triazine tolerant | Brassica napus var. napus | Description | Photograph | Diagram |
| Canola; Volunteer | Brassica napus var. napus | Description | Photograph | Diagram |
| Cape Tulip; 1 leaf | Moraea flaccida | Description | Photograph | Diagram |
| Cape Tulip; 2 leaf | Moraea miniata | Description | Photograph | Diagram |
| Capeweed | Arctotheca calendula | Description | Photograph | Diagram |
| Carpet Grass; Broad-leaved | Axonopus compressus | Description | Photograph | Diagram |
| Castor Oil Plant | Ricinus communis | Description | Photograph | Diagram |
| Catchfly; French | Silene gallica | Description | Photograph | Diagram |
| Catchfly; Mallee | Silene apetala | Description | Photograph | Diagram |
| Catsear; Smooth | Hypochaeris glabra | Description | Photograph | Diagram |
| Caustic Weed | Chamaesyce drummondii | Description | Photograph | Diagram |
| Cedar; White | Melia azedarach | Description | Photograph | Diagram |
| Century Plant | Agave americana | | | |
| Cereals; Volunteer | Triticum,Hordeum,Avena species | Description | Photograph | Diagram |
| Charlock | Sinapis arvensis | Description | Photograph | Diagram |
| Chickpea; Volunteer | Cicer arietinum | Description | Photograph | Diagram |
| Chickweed | Stellaria media | Description | Photograph | Diagram |
| Chickweed; Mouse-eared | Cerastium fontanum | Description | Photograph | Diagram |
| Chickweed; StickyMouseEar | Cerastium glomeratum | Description | Photograph | Diagram |
| Chicory | Cichorium intybus | Description | Photograph | Diagram |
| Chincherinchee | Ornithogalum thyrsoides | Description | Photograph | Diagram |
| Chinese Tallow Tree | Sapium sebiferum | Description | Photograph | Diagram |
| Chromolaena (Siam weed) | Chromolaena odorata | | | |
| Cinquefoil; Sulphur | Potentilla recta | Description | Photograph | Diagram |
| Cleavers | Galium aparine | Description | Photograph | Diagram |
| Clover; Alsike | Trifolium hybridum | Description | Photograph | Diagram |
| Clover; Annual | Trifolium species | Description | | Diagram |
| Clover; Arrowleaf | Trifolium vesiculosum | Description | Photograph | Diagram |
| Clover; Balansa | Trifolium balansae | Description | Photograph | Diagram |
| Clover; Cluster | Trifolium glomeratum | Description | Photograph | Diagram |
| Clover; Crimson | Trifolium incarnatum | Description | Photograph | Diagram |
| Clover; Gland | Trifolium glandulosum or glanduliferum | Description | Photograph | Diagram |
| Clover; Hare's foot | Trifolium arvense | Description | Photograph | Diagram |
| Clover; Perennial | Trifolium species | Description | | Diagram |
| Clover; Red | Trifolium pratense | Description | Photograph | Diagram |
| Clover; Shaftal | Trifolium resupinatum | Description | Photograph | Diagram |
| Clover; Subterranean | Trifolium subterraneum | Description | Photograph | Diagram |
| Clover; Suckling | Trifolium dubium | Description | Photograph | Diagram |
| Clover; White | Trifolium repens | Description | Photograph | Diagram |
| Clover; Woolly | Trifolium tomentosum | Description | Photograph | Diagram |
| Cobbler's-pegs | Bidens pilosa | Description | Photograph | Diagram |
| Cocksfoot | Dactylis glomerata | Description | Photograph | Diagram |
| Cockspur; Maltese | Centaurea melitensis | Description | Photograph | Diagram |
| Coolatai Grass | Hyparrhenia hirta | Description | Photograph | Diagram |
| Coreopsis | Coreopsis lanceolata | Description | Photograph | Diagram |
| Coriander; Volunteer | Coriandrum sativum | Description | Photograph | Diagram |
| Corn Gromwell | Buglossoides arvensis | Description | Photograph | Diagram |
| Cornflower | Centaurea cyanus | Description | Photograph | Diagram |
| Cotoneaster | Cotoneaster species | Description | Photograph | Diagram |
| Cotton Fireweed | Senecio quadridentatus | Description | Photograph | Diagram |
| Cotton; Glyphosate tolerant | Gossypium hirsutum | Description | Photograph | Diagram |
| Cotton; Volunteer | Gossypium hirsutum | Description | Photograph | Diagram |
| Cotton-leaved Physic Nut or Bellyache Bush | Jatropha gossypiifolia | | | |
| Cotula; Common | Cotula australis | Description | Photograph | Diagram |
| Couch | Cynodon dactylon | Description | Photograph | Diagram |
| Couch; English | Elytrigia repens | Description | Photograph | Diagram |
| Couch; Mullumbimby | Cyperus brevifolius | Description | Photograph | Diagram |
| Couch; Water | Paspalum distichum | Description | Photograph | |
| Cowvine | Ipomoea lonchophylla | Description | Photograph | Diagram |
| Crabgrass | Digitaria sanguinalis | Description | Photograph | Diagram |
| Cranesbill; Cutleaf | Geranium dissectum | Description | Photograph | Diagram |
| Cranesbill; Dove's-foot | Geranium molle | Description | Photograph | Diagram |
| Crassula; Australian | Crassula sieberana | Description | Photograph | Diagram |
| Crassula; Dense | Crassula colorata | Description | Photograph | Diagram |
| Crassula; Spreading | Crassula decumbens | Description | Photograph | Diagram |
| Creeping inchplant | Callisia repens | | | |
| Crownbeard | Verbesina encelioides | Description | Photograph | Diagram |
| Crowsfoot grass | Eleusine indica | Description | Photograph | Diagram |
| Crumbweed; Green | Dysphania rhadinostachya | Description | Photograph | Diagram |
| Crumbweed; Small | Dysphania pumilio | Description | | Diagram |
| Cudweed; Japanese | Gnaphalium sphaericum | Description | Photograph | Diagram |
| Cudweed; Jersey | Helichrysum luteoalbum | Description | | Diagram |
| Cudweed; Spoon | Stuartina muelleri | Description | Photograph | Diagram |
| Cumbungi; Broad-leaved | Typha orientalis | Description | Photograph | Diagram |
| Daisy; African | Senecio pterophorus | Description | Photograph | Diagram |
| Daisy; Calomba | Oncosiphon suffruticosum | Description | Photograph | Diagram |
| Daisy; English | Bellis perennis | Description | Photograph | Diagram |
| Daisy; Ox-eyed | Leucanthemum vulgare | Description | Photograph | Diagram |
| Daisy; Poached-egg | Myriocephalus stuartii | Description | Photograph | Diagram |
| Daisy; Singapore | Sphagneticola trilobata | | | |
| Daisy; Tangled Burr | Calotis erinacea | Description | Photograph | Diagram |
| Dandelion | Taraxacum officinale | Description | Photograph | Diagram |
| Darnel | Lolium temulentum | Description | Photograph | Diagram |
| Dewberry | Rubus roribaccus | | | |
| Diosma | Coleonema album | Description | Photograph | Diagram |
| Dirty Dora | Cyperus difformis | Description | Photograph | Diagram |
| Dock; Bladder | Acetosa vesicaria | | | |
| Dock; Broad-leaved | Rumex obtusifolius | Description | Photograph | Diagram |
| Dock; Clustered | Rumex conglomeratus | Description | Photograph | Diagram |
| Dock; Curled | Rumex crispus | Description | Photograph | Diagram |
| Dock; Fiddle | Rumex pulcher | Description | Photograph | Diagram |
| Dock; Swamp | Rumex brownii | Description | Photograph | Diagram |
| Dodder | Cuscuta species | Description | Photograph | Diagram |
| Dodder; Golden | Cuscuta campestris | Description | Photograph | Diagram |
| Dodder; Small-seeded Alfalfa | Cuscuta planiflora | Description | Photograph | Diagram |
| Doublegee | Rumex hypogaeus | Description | Photograph | Diagram |
| Doveweed | Eremocarpus setiger | Description | Photograph | Diagram |
| Duckweed | Lemna disperma | | | |
| Elodea | Elodea canadensis | Description | Photograph | Diagram |
| Eucalypt; Blue Gum | Eucalyptus globulus | Description | Photograph | Diagram |
| Eucalypts | Eucalyptus species | Description | Photograph | Diagram |
| Eulalia | Miscanthus sinensis | Description | Photograph | Diagram |
| False Caper | Euphorbia terracina | Description | Photograph | Diagram |
| False Yellowhead | Dittrichia viscosa | Description | Photograph | Diagram |
| Fat Hen | Chenopodium album | Description | Photograph | Diagram |
| Feather grass; African | Pennisetum macrourum | Description | Photograph | Diagram |
| Feathertop | Pennisetum villosum | Description | Photograph | Diagram |
| Fennel | Foeniculum vulgare | Description | Photograph | Diagram |
| Fenugreek | Trigonella foenum-graecum | Description | Photograph | Diagram |
| Fescue; Demeter | Festuca arundinacea var. Demeter | Description | Photograph | Diagram |
| Fescue; Rat-tailed | Vulpia myuros | Description | Photograph | Diagram |
| Fescue; Sand | Vulpia fasciculata | Description | Photograph | Diagram |
| Fescue; Squirrel-tailed | Vulpia bromoides | Description | Photograph | Diagram |
| Fescue; Tall | Festuca arundinacea | Description | Photograph | Diagram |
| Fescue; Volunteer | Festuca species | Description | Photograph | Diagram |
| Field Cress | Lepidium campestre | Description | Photograph | Diagram |
| Field Madder | Sherardia arvensis | Description | Photograph | Diagram |
| Fig; Edible | Ficus carica | Description | Photograph | Diagram |
| Fireweed | Senecio madagascariensis | | | |
| Flatweed | Hypochaeris radicata | Description | Photograph | Diagram |
| Fleabane; Canadian | Conyza canadensis | Description | Photograph | Diagram |
| Fleabane; Flaxleaf | Conyza bonariensis | Description | Photograph | Diagram |
| Fleabane; Red Spot | Conyza parva | Description | | Diagram |
| Fleabane; Tall | Conyza sumatrensis | Description | Photograph | Diagram |
| Forget-me-not; Wood | Myosotis sylvatica | Description | Photograph | Diagram |
| Fountain Grass | Pennisetum setaceum | Description | Photograph | Diagram |
| Four O'Clock | Oxalis purpurea | Description | Photograph | Diagram |
| Four-leaved Allseed | Polycarpon tetraphyllum | Description | Photograph | Diagram |
| Foxglove | Digitalis purpurea | Description | Photograph | Diagram |
| Freesia | Freesia alba x leichtlinii | Description | Photograph | Diagram |
| Fumitory; Common | Fumaria officinalis | Description | Photograph | Diagram |
| Fumitory; Denseflower | Fumaria densiflora | Description | Photograph | Diagram |
| Fumitory; Smallflower | Fumaria parviflora | Description | Photograph | Diagram |
| Fumitory; Wall | Fumaria muralis | Description | Photograph | Diagram |
| Fumitory; Whiteflower | Fumaria capreolata | Description | Photograph | Diagram |
| Gamba grass | Andropogon gayanus | | | |
| Garlic; Crow | Allium vineale | Description | Photograph | Diagram |
| Garlic; Three-cornered | Allium triquetrum | Description | Photograph | Diagram |
| Gazania | Gazania linearis | Description | | Diagram |
| Geranium; Native | Geranium solanderi | Description | Photograph | Diagram |
| Gladiolus | Gladiolus species | Description | Photograph | Diagram |
| Gladiolus; Wavy | Gladiolus undulatus | Description | Photograph | Diagram |
| Globe Chamomile | Oncosiphon piluliferum | Description | Photograph | Diagram |
| Gooseberry; Sticky Cape | Physalis viscosa | Description | Photograph | Diagram |
| Goosefoot; Nettle-leaved | Chenopodium murale | Description | Photograph | Diagram |
| Goosefoot; Purple | Scleroblitum atriplicinum | Description | Photograph | Diagram |
| Gorse/Furze | Ulex europaeus | Description | Photograph | Diagram |
| Gorteria | Gorteria personata | Description | Photograph | Diagram |
| Grape Hyacinth | Muscari species | Description | Photograph | Diagram |
| Grasses; Annual | Poaceae species | | | |
| Grasses; Perennial | Poaceae species | | | |
| Great Mullein | Verbascum thapsus | Description | Photograph | Diagram |
| Groundsel Bush | Baccharis halimifolia | Description | Photograph | Diagram |
| Groundsel; Common | Senecio vulgaris | Description | Photograph | Diagram |
| Groundsel; Purple | Senecio elegans | Description | Photograph | Diagram |
| Hairgrass | Aira species | Description | Photograph | Diagram |
| Hares-tail Grass | Lagurus ovatus | Description | Photograph | Diagram |
| Harlequin Flower; Tricolor | Sparaxis pillansii | Description | Photograph | Diagram |
| Harlequin Flower; White | Sparaxis bulbifera | Description | Photograph | Diagram |
| Hawkbit; Hairy | Leontodon saxatilis | Description | Photograph | Diagram |
| Hawthorn | Crataegus monogyna | Description | Photograph | Diagram |
| Heliotrope; Blue | Heliotropium amplexicaule | Description | Photograph | Diagram |
| Heliotrope; Common | Heliotropium europaeum | Description | Photograph | Diagram |
| Hemlock | Conium maculatum | Description | Photograph | Diagram |
| Hexham Scent | Melilotus indica | Description | Photograph | Diagram |
| Hoary Cress | Lepidium draba | Description | | Diagram |
| Holly | Ilex aquifolium | Description | Photograph | Diagram |
| Honey Locust | Gleditsia triacanthos | Description | | Diagram |
| Honeysuckle; Japanese | Lonicera japonica | Description | Photograph | Diagram |
| Horehound | Marrubium vulgare | Description | Photograph | Diagram |
| Hornwort | Ceratophyllum demersum | Description | Photograph | Diagram |
| Horsetail; Common | Equisetum arvense | | | |
| Hottentot Fig | Carpobrotus edulis | Description | Photograph | Diagram |
| Hound's-tongue; Sweet | Cynoglossum suaveolens | | | |
| Hydrocotyl | Hydrocotyle ranunculoides | | | |
| Iceplant | Mesembryanthemum crystallinum | Description | Photograph | Diagram |
| Iceplant; Slender | Mesembryanthemum nodiflorum | | | |
| Indian Hemp | Cannabis sativa | Description | Photograph | Diagram |
| Indian Jujube | Ziziphus mauritiana | | | |
| Inkweed | Phytolacca octandra | Description | Photograph | Diagram |
| Innocent Weed | Cenchrus species | Description | Photograph | Diagram |
| Ivy; Cape | Delairea odorata | Description | Photograph | Diagram |
| Ivy; English | Hedera helix | Description | Photograph | Diagram |
| Ixia | Ixia paniculata | Description | Photograph | Diagram |
| Jasmine | Jasminum polyanthum | Description | Photograph | Diagram |
| Johnson grass | Sorghum halepense | Description | Photograph | Diagram |
| Jo-jo | Soliva sessilis | Description | Photograph | Diagram |
| Jo-jo; Dwarf | Soliva anthemifolia | Description | Photograph | Diagram |
| Kangaroo Apple; Large-flowered | Solanum laciniatum | Description | Photograph | Diagram |
| Kangaroo Grass | Themeda triandra | Description | Photograph | Diagram |
| Kangaroo Paw | Anigozanthos species | | | |
| Kangaroo Thorn | Acacia paradoxa | Description | | Diagram |
| Keriberry | Rubus rugosus | | | |
| Khaki Weed | Alternanthera pungens | Description | Photograph | Diagram |
| Kikuyu grass | Pennisetum clandestinum | Description | Photograph | Diagram |
| Knapweed; Black | Centaurea nigra | Description | Photograph | Diagram |
| Knapweed; Creeping | Acroptilon repens | Description | Photograph | Diagram |
| Knotweed; Creeping | Polygonum prostratum | Description | Photograph | Diagram |
| Knotweed; Pale | Polygonum lapathifolium | Description | Photograph | Diagram |
| Kochia | Bassia scoparia | | | |
| Lablab; Volunteer | Lablab purpureus | Description | Photograph | Diagram |
| Lagarosiphon | Lagarosiphon major | Description | Photograph | Diagram |
| Lantana | Lantana camara | Description | Photograph | Diagram |
| Lavender; Topped | Lavandula stoechas | Description | Photograph | Diagram |
| Lentils; Volunteer | Lens culinaris | Description | Photograph | Diagram |
| Lesser Jack | Rumex spinosus | Description | Photograph | Diagram |
| Lettuce; Prickly | Lactuca serriola | Description | Photograph | Diagram |
| Linola | Linum usitatissimum | Description | Photograph | Diagram |
| Liquorice; Native | Glycyrrhiza acanthocarpa | Description | Photograph | Diagram |
| Locust; Black | Robinia pseudoacacia | Description | Photograph | Diagram |
| Loganberry | Rubus loganobaccus | Description | Photograph | Diagram |
| London Rocket | Sisymbrium irio | Description | Photograph | Diagram |
| Looking-glass Bush | Coprosma repens | Description | Photograph | Diagram |
| Loosestrife; Hyssop | Lythrum hyssopifolia | Description | Photograph | Diagram |
| Lotus | Lotus species | Description | Photograph | Diagram |
| Lovegrass; African | Eragrostis curvula | Description | Photograph | Diagram |
| Lovegrass; Weeping | Eragrostis parviflora | Description | Photograph | Diagram |
| Lucerne | Medicago sativa | Description | Photograph | Diagram |
| Lupin; Narrow-leaved | Lupinus angustifolius | Description | Photograph | Diagram |
| Lupin; Sandplain | Lupinus cosentinii | Description | Photograph | Diagram |
| Lupin; White | Lupinus albus | Description | Photograph | Diagram |
| Lupin; Yellow | Lupinus luteus | Description | Photograph | Diagram |
| Madeira vine | Anredera cordifolia | | | |
| Maize | Zea mays | Description | Photograph | Diagram |
| Maize; IT tolerant | Zea mays | Description | Photograph | Diagram |
| Malcolmia | Malcolmia africana | Description | Photograph | Diagram |
| Mallow; Red-flowered | Modiola caroliniana | Description | Photograph | Diagram |
| Mallow; Small-flowered | Malva parviflora | Description | Photograph | Diagram |
| Mallow; Tall | Malva sylvestris | Description | Photograph | Diagram |
| Mallow-of-Nice | Malva nicaeensis | Description | Photograph | Diagram |
| Mayweed; Stinking | Anthemis cotula | Description | Photograph | Diagram |
| Medic; Angel Strand | Medicago littoralis cv. Angel | Description | Photograph | Diagram |
| Medic; Barrel | Medicago truncatula | Description | Photograph | Diagram |
| Medic; Burr | Medicago polymorpha | Description | Photograph | Diagram |
| Medic; Gama | Medicago rugosa | Description | Photograph | Diagram |
| Medic; Murex | Medicago murex | Description | Photograph | Diagram |
| Medic; Snail | Medicago scutellata | Description | Photograph | Diagram |
| Medic; Strand | Medicago littoralis | Description | Photograph | Diagram |
| Medic; Woolly Burr | Medicago minima | Description | Photograph | Diagram |
| Melon; Camel | Citrullus lanatus | Description | Photograph | Diagram |
| Melon; Prickly Paddy | Cucumis myriocarpus | Description | Photograph | Diagram |
| Melons | Citrullus & Cucurbita species | Description | Photograph | Diagram |
| Mesquite | Prosopis glandulosa × velutina | Description | Photograph | Diagram |
| Mignonette; Cutleaf | Reseda lutea | Description | Photograph | Diagram |
| Mignonette; Wild | Reseda luteola | Description | Photograph | Diagram |
| Milfoil | Achillea millefolium | Description | Photograph | Diagram |
| Milfoil; Brazilian Water | Myriophyllum aquaticum | Description | Photograph | Diagram |
| Milkwort; Myrtle-leaved | Polygala myrtifolia | Description | | Diagram |
| Millet Panic | Panicum miliaceum | Description | Photograph | Diagram |
| Millet; Japanese | Echinochloa esculenta | Description | Photograph | Diagram |
| Millet; Native | Panicum decompositum | Description | Photograph | Diagram |
| Mintweed | Salvia reflexa | Description | Photograph | Diagram |
| Morning Glory; Poison | Ipomoea muelleri | Description | Photograph | Diagram |
| Morning Glory; Purple | Ipomoea indica | Description | Photograph | Diagram |
| Mossman River grass | Cenchrus echinatus | Description | Photograph | Diagram |
| Mullamulla; Green | Ptilotus polystachyus | Description | Photograph | Diagram |
| Muskweed | Myagrum perfoliatum | Description | Photograph | Diagram |
| Mustard; Ball | Neslia paniculata | Description | Photograph | Diagram |
| Mustard; Blue | Chorispora tenella | Description | Photograph | Diagram |
| Mustard; Hare's-ear | Conringia orientalis | Description | Photograph | Diagram |
| Mustard; Hedge | Sisymbrium officinale | Description | Photograph | Diagram |
| Mustard; Indian | Brassica juncea | Description | Photograph | Diagram |
| Mustard; Indian Hedge | Sisymbrium orientale | Description | Photograph | Diagram |
| Mustard; White | Sinapis alba | Description | Photograph | Diagram |
| Mustard; White Ball | Calepina irregularis | Description | Photograph | Diagram |
| Nardoo; Common | Marsilea drummondii | | | |
| Nasturtium | Tropaeolum majus | Description | Photograph | Diagram |
| Nettle; Dead | Lamium amplexicaule | Description | Photograph | Diagram |
| Nettle; Dwarf | Urtica urens | Description | Photograph | Diagram |
| Nightshade; Blackberry | Solanum nigrum | Description | Photograph | Diagram |
| Nightshade; Silverleaved | Solanum elaeagnifolium | Description | Photograph | Diagram |
| Nutgrass | Cyperus rotundus | Description | Photograph | Diagram |
| Oat; Bearded | Avena barbata | Description | Photograph | Diagram |
| Oat; Ludo Wild | Avena sterilis ssp. ludo | Description | Photograph | Diagram |
| Oat; Volunteer | Avena sativa | Description | Photograph | Diagram |
| Oat; Wild | Avena fatua | Description | Photograph | Diagram |
| Oatgrass; Bulbous | Arrhenatherum elatius var. bulbosum | Description | Photograph | Diagram |
| Olive | Olea europaea | | | |
| Onion Grass | Romulea rosea | Description | Photograph | Diagram |
| Onion Grass; Small-flowered | Romulea minutiflora | Description | Photograph | Diagram |
| Onion Weed | Asphodelus fistulosus | Description | Photograph | Diagram |
| Onion Weed; Dune | Trachyandra divaricata | Description | Photograph | Diagram |
| Onion weed; False | Nothoscordum borbonicum | | | |
| Opuntoid Cacti | Cylindropunti,Opuntia,Austrocylindropuntia species | | | |
| Oxalis; Finger-leaf | Oxalis glabra | Description | Photograph | Diagram |
| Oxalis; Fishtail | Oxalis latifolia | Description | Photograph | Diagram |
| Oxalis; Pale-flowered | Oxalis incarnata | | Photograph | |
| Ox-tongue | Helminthotheca echioides | Description | Photograph | Diagram |
| Pale Goodenia | Goodenia glauca | Description | Photograph | Diagram |
| Pampas grass | Cortaderia selloana | Description | Photograph | Diagram |
| Pampas Lily of-the Valley | Salpichroa origanifolia | Description | Photograph | Diagram |
| Pansy; Field | Viola arvensis | Description | Photograph | Diagram |
| Paradoxa grass | Phalaris paradoxa | Description | Photograph | Diagram |
| Parkinsonia | Parkinsonia aculeata | Description | Photograph | Diagram |
| Parramatta Grass | Sporobolus indicus | Description | Photograph | Diagram |
| Parsley Piert | Aphanes arvensis | Description | Photograph | Diagram |
| Parthenium Weed | Parthenium hysterophorus | Description | Photograph | Diagram |
| Paspalum | Paspalum dilatatum | Description | Photograph | Diagram |
| Paterson's Curse | Echium plantagineum | Description | Photograph | Diagram |
| Paulownia | Paulownia tomentosa | Description | Photograph | Diagram |
| Pea; Dolichos | Dipogon lignosus | Description | Photograph | Diagram |
| Pea; Gambia | Crotalaria goreensis | Description | Photograph | Diagram |
| Pea; Tangier | Lathyrus tingitanus | Description | | Diagram |
| Pea; Volunteer | Pisum sativum | Description | Photograph | Diagram |
| Pear; Tiger | Opuntia aurantiaca | Description | Photograph | Diagram |
| Pearlwort; Annual | Sagina apetala | Description | Photograph | Diagram |
| Pelargonium; Rose | Pelargonim capitatum | Description | Photograph | Diagram |
| Pennyroyal | Mentha pulegium | Description | Photograph | Diagram |
| Pennywort; Largeleaf | Hydrocotyle bonariensis | | | |
| Pepper Tree; Broad-leaved | Schinus terebinthifolius | Description | Photograph | Diagram |
| Peppercress; Common | Lepidium africanum | Description | Photograph | Diagram |
| Peppermint | Mentha x piperata | Description | Photograph | Diagram |
| Periwinkle; Blue | Vinca major | Description | Photograph | Diagram |
| Phalaris | Phalaris aquatica | Description | Photograph | Diagram |
| Pheasant's Eye | Adonis microcarpa | Description | Photograph | Diagram |
| Phlox; Spreading Night | Zaluzianskya divaricata | Description | Photograph | Diagram |
| Pigeon grass | Setaria species | Description | Photograph | Diagram |
| Pigweed | Portulaca oleracea | Description | Photograph | Diagram |
| Pimpernel; Blue & Scarlet | Anagallis arvensis | Description | Photograph | Diagram |
| Pincushion | Scabiosa atropurpurea | Description | Photograph | Diagram |
| Pine; Volunteer | Pinus species | Description | Photograph | Diagram |
| Pittosporum | Pittosporum undulatum | Description | Photograph | Diagram |
| Plantain; Buck's-horn | Plantago coronopus | Description | Photograph | Diagram |
| Plantain; Greater | Plantago major | Description | Photograph | Diagram |
| Plantain; Ribwort | Plantago lanceolata | Description | Photograph | Diagram |
| Poa; Annual | Poa annua | Description | Photograph | Diagram |
| Poa; Bulbous | Poa bulbosa | Description | Photograph | Diagram |
| Podalyria; Silver | Podalyria sericea | | | |
| Pokeweed | Phytolacca americana | | | |
| Poplar; White | Populus alba | Description | Photograph | Diagram |
| Poppy | Papaver species | Description | Photograph | Diagram |
| Poppy; Field | Papaver rhoeas | Description | Photograph | Diagram |
| Poppy; Long-headed | Papaver dubium | Description | Photograph | Diagram |
| Poppy; Mexican | Argemone ochroleuca | Description | Photograph | Diagram |
| Poppy; Opium | Papaver somniferum | Description | Photograph | Diagram |
| Poppy; Rough | Papaver hybridum | Description | Photograph | Diagram |
| Potamogeton | Potamogeton drummondii | | | |
| Potato haulm | Solanum tuberosum | Description | Photograph | Diagram |
| Potato Weed | Galinsoga parviflora | Description | Photograph | Diagram |
| Prairie grass | Bromus catharticus | Description | Photograph | Diagram |
| Pratia; Poison | Pratia concolor | Description | Photograph | Diagram |
| Prickly Pear; Common | Opuntia stricta | Description | Photograph | Diagram |
| Prickly Waternymph | Najas marina | Description | Photograph | Diagram |
| Primrose; Evening | Oenothera stricta | Description | Photograph | Diagram |
| Privet | Ligustrum species | Description | Photograph | Diagram |
| Pyp Grass | Ehrharta villosa | Description | Photograph | Diagram |
| Quaking Grass | Briza maxima | Description | Photograph | Diagram |
| Quena | Solanum esuriale | Description | Photograph | Diagram |
| Radish; Wild | Raphanus raphanistrum | Description | Photograph | Diagram |
| Radish; Wild B Resistant | Raphanus raphanistrum | Description | Photograph | Diagram |
| Radish; Wild C Resistant | Raphanus raphanistrum | Description | Photograph | Diagram |
| Radish; Wild I Resistant | Raphanus raphanistrum | Description | Photograph | Diagram |
| Ragweed; Annual | Ambrosia artemisiifolia | Description | Photograph | Diagram |
| Ragweed; Lacy | Ambrosia tenuifolia | Description | Photograph | Diagram |
| Ragweed; Perennial | Ambrosia psilostachya | Description | Photograph | Diagram |
| Ragwort | Senecio jacobaea | Description | Photograph | Diagram |
| Raspberry | Rubus idaeus | Description | Photograph | Diagram |
| Raspberry; Native | Rubus parvifolius | | | |
| Rattlepod | Crotalaria species | Description | Photograph | Diagram |
| Red Azolla | Azolla rubra | | | |
| Red Natal Grass | Melinis repens | | | |
| Redshank; (Amaranthus) | Amaranthus cruentus | Description | Photograph | Diagram |
| Redshank; (Persicaria) | Persicaria maculosa | Description | Photograph | Diagram |
| Reed Sweet grass | Glyceria maxima | Description | Photograph | Diagram |
| Reed; Giant | Arundo donax | Description | Photograph | Diagram |
| Rhodes Grass | Chloris gayana | | | |
| Rhodes grass; Feathertop | Chloris virgata | Description | Photograph | Diagram |
| Rose; Cherokee | Rosa laevigata | | | |
| Rose; Chestnut | Rosa roxburghii | | | |
| Rose; China | Rosa chinensis | | | |
| Rose; Dog | Rosa canina | | | |
| Rose; French | Rosa gallica | | | |
| Rose; Japanese | Rosa multiflora | | | |
| Rose; Macartney | Rosa bracteata | | | |
| Rose; Manetti | Rosa chinensis X moschata | | | |
| Rose; Musk | Rosa moschata | | | |
| Rose; Rambler | Rosa chinensis X multiflora | | | |
| Rose; Tea | Rosa odorata | | | |
| Roses | Rosa species | | Photograph | |
| Rough Dogstail | Cynosurus echinatus | Description | Photograph | Diagram |
| Rubber vine | Cryptostegia grandiflora | | | |
| Rush | Juncus species | Description | Photograph | Diagram |
| Rush; Common | Juncus usitatus | Description | Photograph | Diagram |
| Rush; Spiny | Juncus acutus | Description | Photograph | Diagram |
| Rye; Cereal Volunteer | Secale cereale | Description | Photograph | Diagram |
| Ryegrass; A Resistant | Lolium rigidum | Description | Photograph | Diagram |
| Ryegrass; AB Resistant | Lolium rigidum | Description | Photograph | Diagram |
| Ryegrass; Annual | Lolium rigidum | Description | Photograph | Diagram |
| Ryegrass; B Resistant | Lolium rigidum | Description | Photograph | Diagram |
| Ryegrass; C Resistant | Lolium rigidum | Description | Photograph | Diagram |
| Ryegrass; D Resistant | Lolium rigidum | Description | Photograph | Diagram |
| Ryegrass; Italian | Lolium multiflorum | Description | Photograph | Diagram |
| Ryegrass; L(Quat) Resistant | Lolium rigidum | Description | Photograph | Diagram |
| Ryegrass; M(Glyph) Resistant | Lolium rigidum | Description | Photograph | Diagram |
| Ryegrass; Perennial | Lolium perenne | Description | Photograph | Diagram |
| Safflower | Carthamus tinctorius | Description | Photograph | Diagram |
| Sage; Wild | Salvia verbenaca | Description | Photograph | Diagram |
| Sagittaria | Sagittaria platyphylla | Description | Photograph | Diagram |
| Salsify | Tragopogon porrifolius | Description | | Diagram |
| Saltbush; Old Man | Atriplex nummularia | | | |
| Saltwort; Prickly | Salsola tragus | Description | Photograph | Diagram |
| Salvinia | Salvinia molesta | Description | Photograph | Diagram |
| Sand Rocket | Diplotaxis tenuifolia | Description | Photograph | Diagram |
| Sandspurrey | Spergularia rubra | Description | Photograph | Diagram |
| Scorzonera | Podospermum resedifolium | Description | Photograph | Diagram |
| Sea Lavender; Perennial | Limonium sinuatum | Description | Photograph | Diagram |
| Sea Lavender; Winged | Limonium lobatum | Description | Photograph | Diagram |
| Sea Rocket | Cakile maritima | Description | Photograph | Diagram |
| Sedge; Umbrella | Cyperus eragrostis | Description | Photograph | Diagram |
| Self-heal | Prunella vulgaris | Description | Photograph | Diagram |
| Senecio; Holly-leaved | Senecio glastifolius | Description | Photograph | Diagram |
| Sensitive plant; Common | Mimosa pudica | Description | Photograph | Diagram |
| Sensitive plant; Giant | Mimosa pigra | Description | Photograph | Diagram |
| Serradella; French | Ornithopus sativus | Description | Photograph | Diagram |
| Serradella; Yellow | Ornithopus compressus | Description | Photograph | Diagram |
| Serrated Tussock | Nassella trichotoma | Description | Photograph | Diagram |
| Sheep's burr | Aceana echinata | | | |
| Shepherds Purse | Capsella bursa-pastoris | Description | Photograph | Diagram |
| Shivery grass | Briza minor | Description | Photograph | Diagram |
| Sida; Spinyhead | Sida acuta | Description | Photograph | Diagram |
| Skeleton Weed | Chondrilla juncea | Description | Photograph | Diagram |
| Slender celery | Ciclospermum leptophyllum | Description | Photograph | Diagram |
| Soapwort; Bladder | Vaccaria hispanica | Description | Photograph | Diagram |
| Soapwort; Common | Saponaria officinalis | | Photograph | |
| Soldiers | Lachenalia aloides | | | |
| Sorghum; Forage | Sorghum bicolor | Description | Photograph | Diagram |
| Sorrel | Acetocella vulgaris | Description | Photograph | Diagram |
| Sourgrass | Paspalum conjugatum | Description | Photograph | Diagram |
| Soursob | Oxalis pes-caprae | Description | Photograph | Diagram |
| Sowthistle; Common | Sonchus oleraceus | Description | Photograph | Diagram |
| Sowthistle; Rough | Sonchus asper | Description | Photograph | Diagram |
| Soybeans; Volunteer | Glycine max | Description | Photograph | Diagram |
| Speedwell; Creeping | Veronica persica | Description | Photograph | Diagram |
| Speedwell; Ivy leaf | Veronica hederifolia | Description | Photograph | Diagram |
| Speedwell; Wall | Veronica arvensis | | | |
| Spider Plant | Chlorophytum comosum | | | |
| Spinach; New Zealand | Tetragonia tetragonoides | Description | Photograph | Diagram |
| Spinach; Sea | Tetragonia decumbens | Description | Photograph | Diagram |
| Spurge; Caper | Euphorbia lathyrus | Description | Photograph | Diagram |
| Spurge; Petty | Euphorbia peplus | Description | Photograph | Diagram |
| Spurge; Sea | Euphorbia paralias | Description | | Diagram |
| Spurge; Sun | Euphorbia helioscopia | Description | Photograph | Diagram |
| Spurrey; Corn | Spergula arvensis | Description | Photograph | Diagram |
| Squirting Cucumber | Ecballium elaterium | Description | Photograph | Diagram |
| St John's Wort | Hypericum perforatum | Description | Photograph | Diagram |
| Stagger Weed | Stachys arvensis | Description | Photograph | Diagram |
| Star-of-Bethlehem | Ornithogalum umbellatum | Description | Photograph | Diagram |
| Starwort; Bushy | Symphyotrichum subulatum | Description | | Diagram |
| Stinkgrass | Eragrostis cilianensis | Description | Photograph | Diagram |
| Stinking Roger | Osteospermum clandestinum | Description | Photograph | Diagram |
| Stinkwort | Dittrichia graveolens | Description | Photograph | Diagram |
| Stock; Night-scented | Matthiola longipetala | Description | Photograph | Diagram |
| Stonewort | Chara species | Description | Photograph | Diagram |
| Storksbill; Common | Erodium cicutarium | Description | Photograph | Diagram |
| Storksbill; Long | Erodium botrys | Description | Photograph | Diagram |
| Storksbill; Musky | Erodium moschatum | Description | Photograph | Diagram |
| Sudax | Sorghum hybrid | Description | Photograph | Diagram |
| Summer grass | Digitaria ciliaris | Description | Photograph | Diagram |
| Sunflower | Helianthus annuus | Description | Photograph | Diagram |
| Swan plant | Gomphocarpus fruticosus | Description | Photograph | Diagram |
| Swinecress | Coronopus squamatus | Description | Photograph | Diagram |
| Swinecress; Lesser | Lepidium didymum | Description | | Diagram |
| Tagasaste | Chamaecytisus palmensis | | Photograph | |
| Tar Vine | Boerhavia species | Description | Photograph | Diagram |
| Taro | Colocasia esculenta | Description | Photograph | Diagram |
| Taylorina | Psoralea pinnata | Description | Photograph | Diagram |
| Teasel; Wild | Dipsacus fullonum | Description | Photograph | Diagram |
| Teatree; Coast | Leptospermum laevigatum | Description | Photograph | Diagram |
| Thimbleberry | Rubus parviflorus | | | |
| Thistle; Afghan | Solanum hoplopetalum | Description | Photograph | Diagram |
| Thistle; African | Berkheya rigida | Description | Photograph | Diagram |
| Thistle; Artichoke | Cynara cardunculus | Description | Photograph | Diagram |
| Thistle; Glaucous Star | Carthamus leucocaulos | Description | Photograph | Diagram |
| Thistle; Illyrian | Onopordum illyricum | Description | Photograph | Diagram |
| Thistle; Nodding | Carduus nutans | Description | Photograph | Diagram |
| Thistle; Perennial | Cirsium arvense | Description | Photograph | Diagram |
| Thistle; Saffron | Carthamus lanatus | Description | Photograph | Diagram |
| Thistle; Scotch | Onopordum acanthium | Description | Photograph | Diagram |
| Thistle; Slender | Carduus pycnocephalus | Description | Photograph | Diagram |
| Thistle; Soldier | Picnomon acarna | Description | Photograph | Diagram |
| Thistle; Spear | Cirsium vulgare | Description | Photograph | Diagram |
| Thistle; St Barnaby's | Centaurea solstitialis | Description | Photograph | Diagram |
| Thistle; Star | Centaurea calcitrapa | Description | Photograph | Diagram |
| Thistle; Stemless | Onopordum acaulon | Description | Photograph | Diagram |
| Thistle; Variegated | Silybum marianum | Description | Photograph | Diagram |
| Thistle; Winged Slender | Carduus tenuiflorus | Description | Photograph | Diagram |
| Thornapple; Common | Datura stramonium | Description | Photograph | Diagram |
| Thyme; Water | Hydrilla verticillata | Description | Photograph | Diagram |
| Tick Bush | Kunzea ambigua | | | |
| Toad Rush | Juncus bufonius | Description | Photograph | Diagram |
| Toadflax; Twining | Kickxia elatine | Description | Photograph | Diagram |
| Tomato | Lycopersicon esculentum | Description | Photograph | Diagram |
| Tree Hogweed | Polygonum patulum | Description | Photograph | Diagram |
| Tree-of-Heaven | Ailanthus altissima | Description | Photograph | Diagram |
| Trefoil; Birdsfoot | Lotus corniculatus | Description | Photograph | Diagram |
| Triticale; Volunteer | Triticum X Secale | Description | Photograph | Diagram |
| Tumbleweed | Amaranthus albus | Description | Photograph | Diagram |
| Turnip Weed | Rapistrum rugosum | Description | Photograph | Diagram |
| Turnip; Mediterranean | Brassica tournefortii | Description | Photograph | Diagram |
| Turnip; Volunteer | Brassica rapa var. rapa | Description | Photograph | Diagram |
| Turnsole | Chrozophora tinctoria | Description | Photograph | Diagram |
| Umbrella Tree; Queensland | Schefflera actinophylla | Description | Photograph | Diagram |
| Valerian; Red | Centranthus ruber | Description | Photograph | Diagram |
| Veldtgrass; Annual | Ehrharta longiflora | Description | Photograph | Diagram |
| Veldtgrass; Perennial | Ehrharta calycina | Description | Photograph | Diagram |
| Vernal Grass; Sweet | Anthoxanthum odoratum | Description | | Diagram |
| Vetch; Chickling | Lathyrus sativus | Description | Photograph | Diagram |
| Vetch; Common | Vicia sativa ssp sativa | Description | Photograph | Diagram |
| Vetch; Crown | Coronilla varia | Description | Photograph | Diagram |
| Vetch; Fourseeded Slender | Vicia tetrasperma | Description | Photograph | Diagram |
| Vetch; Hairy | Vicia hirsuta | Description | Photograph | Diagram |
| Vetch; Narrow-leaved | Vicia sativa ssp. nigra or angustifolia | Description | Photograph | Diagram |
| Vetch; Purple | Vicia benghalensis | Description | Photograph | Diagram |
| Vetch; Russian | Vicia villosa | Description | Photograph | Diagram |
| Wall Rocket | Diplotaxis muralis | Description | Photograph | Diagram |
| Wallaby Grass | Austrodanthonia species | Description | Photograph | Diagram |
| Wandering Jew | Tradescantia fluminensis/albiflora | Description | | Diagram |
| Wards Weed | Carrichtera annua | Description | Photograph | Diagram |
| Water Hyacinth | Eichhornia crassipes | Description | Photograph | Diagram |
| Water Lettuce | Pistia stratiotes | Description | Photograph | Diagram |
| Waterblinks | Montia fontana | Description | Photograph | Diagram |
| Waterbuttons | Cotula coronopifolia | | | |
| Watercress | Rorippa nasturtium-aquaticum | Description | Photograph | Diagram |
| Waterlily | Nymphaea species | | | |
| Watsonia; Bulbil | Watsonia meriana var. bulbillifera | Description | Photograph | Diagram |
| Wattle | Acacia species | Description | Photograph | Diagram |
| Wattle; Cootamundra | Acacia baileyana | Description | Photograph | Diagram |
| Wattle; Early Black | Acacia decurrens | Description | | Diagram |
| Wattle; Flinders Ranges | Acacia iteaphylla | Description | | Diagram |
| Wattle; Golden | Acacia pycnantha | Description | Photograph | Diagram |
| Wattle; Golden-wreath | Acacia saligna | Description | | Diagram |
| Wattle; Mearns Black | Acacia mearnsii | Description | | Diagram |
| Wattle; Mountain Cedar | Acacia elata | Description | | Diagram |
| Wattle; Queensland Silver | Acacia podalyriifolia | Description | | Diagram |
| Wattle; Silver | Acacia dealbata | Description | Photograph | Diagram |
| Wattle; Sydney Golden | Acacia longifolia | Description | Photograph | Diagram |
| Wheat Grass; Tall | Lophopyrum elongatum | Description | Photograph | Diagram |
| Wheat; IT Volunteer | Triticum aestivum | Description | Photograph | Diagram |
| Wheat; Volunteer | Triticum aestivum | Description | Photograph | Diagram |
| Willow herb | Epilobium species | Description | Photograph | Diagram |
| Willows | Salix species | Description | Photograph | Diagram |
| Windmill grass | Chloris truncata | Description | Photograph | Diagram |
| Wireweed | Polygonum aviculare | Description | Photograph | Diagram |
| Witchgrass | Panicum capillare | Description | Photograph | Diagram |
| Wonga Vine | Pandorea pandorana | | | |
| Wood Sorrel; Yellow | Oxalis corniculata | Description | Photograph | Diagram |
| Yorkshire Fog | Holcus lanatus | Description | Photograph | Diagram |