Noxious weed identification photos
Weed identification photos
Index for identification and control of noxious weeds
Select a plant common name (left) or Latin name (right) from the lists below or click on a thumbnail photo to read individual plant information.
Need help identifying your weed? Click here
Absinth wormwood
Annual bugloss
Bean-caper
Bighead knapweed
Bindweed (morning glory)
Bird cherry
Bishop's weed
Bittersweet nightshade
Black knapweed
Black locust
Blackberry
Bohemian (hybrid) knotweed
Brown knapweed
Buffalobur
Bull thistle
Butterfly bush
Cherry laurel
Clary sage
Common bugloss
Common cordgrass
Common crupina
Common hawkweed
Common hawthorn
Common holly
Common reed
Common tansy
Common teasel
Creeping buttercup
Creeping (Canada) thistle
Dalmatian toadflax
Dense-flowered cordgrass
Diffuse knapweed
Dyer's woad
Egeria
English ivy
English laurel (cherry laurel)
Eurasian watermilfoil
European coltsfoot
European hawkweed
European mountain-ash
Evergreen blackberry
False brome
Fanwort
Field bindweed
Floating primrose-willow
Flowering-rush
Fragrant waterlily
French broom
Garden loosestrife
Garlic mustard
Giant hogweed
Giant knotweed
Goatsrue
Gorse
Hairy Willow-herb
Hawkweed, Meadow subgenus
Hawkweed, Wall subgenus
Hedge bindweed
Herb Robert
Himalayan blackberry
Himalayan knotweed
Houndstongue
Hybrid knotweed
Hydrilla
Itadori knotweed (Japanese knotweed)
Knotweed Species
Kochia
Kudzu
Lawnweed (carpet burweed)
Leafy spurge
Meadow clary
Meadow knapweed
Mediterranean sage
Milk thistle
Morning-glory
Multiflora rose
Musk thistle
Myrtle spurge
Old man's beard
Orange hawkweed
Orange peel clematis
Oxeye daisy
Parrotfeather
Perennial pepperweed
Perennial sowthistle
Poison hemlock
Policeman's helmet
Purple loosestrife
Purple starthistle
Reed canarygrass
Reed sweetgrass
Ricefield bulrush
Rough chervil
Rush broom
Rush skeletonweed
Russian knapweed
Saltcedar
Saltmeadow cordgrass
Scotch thistle
Scotch broom
Shiny geranium
Short-fringed knapweed
Silver lace vine
Slenderflower thistle
Small-flowered jewelweed
Smooth cordgrass
Spotted knapweed
Spurge laurel
St. Johnswort
Sulfur cinquefoil
Tall buttercup
Tall hawkweed
Tansy ragwort
Texas blueweed
Variable-leaf milfoil
Velvetleaf
Viper's bugloss
Water primrose
Wild carrot
Wild chervil
Wild four o'clock
Yellow archangel
Yellow floating heart
Yellow hawkweed
Yellow flag iris
Yellow nutsedge
Yellow starthistle
Yellow toadflax
Abutilon theophrasti
Aegopodium podagraria
Alliaria petiolata
Anchusa officinalis
Anthriscus sylvestris
Artemisia absinthium
Bassia scoparia
Brachypodium sylvaticum
Buddleia davidii
Butomus umbellatus
Cabomba caroliniana
Calystegia sepium
Carduus nutans
Carduus tenuiflorus
Centaurea calcitrapa
Centaurea diffusa
Centaurea jacea
Centaurea macrocephala
Centaurea x moncktonii
Centaurea nigra
Centaurea nigrescens
Centaurea solstitialis
Centaurea stoebe
Chaerophyllum temulum
Chondrilla juncea
Cirsium arvense
Cirsium vulgare
Clematis orientalis
Clematis vitalba
Conium maculatum
Convolvulus arvensis
Convolvulus sepium
Crataegus monogyna
Crupina vulgaris
Cynoglossum officinale
Cyperus esculentus
Cytisus scoparius
Daphne laureola
Daucus carota
Dipsacus fullonum
Echium vulgare
Egeria densa
Epilobium hirsutum
Euphorbia myrsinites
Euphorbia virgata
Fallopia baldschuanica
Fallopia spp.
Fallopia x bohemica
Fallopia japonica
Fallopia sachalinensis
Galega officinalis
Genista monspessulana
Geranium lucidum
Geranium robertianum
Glyceria maxima
Hedera helix
Helianthus ciliaris
Heracleum mantegazzianum
Hieracium, subgenus Hieracium
Hieracium, subgenus Pilosella
Hieracium aurantiacum
Hieracium caespitosum
Hieracium lachenalii
Hieracium piloselloides
Hieracium sabaudum
Hydrilla verticillata
Hypericum perforatum
Ilex aquifolium
Impatiens glandulifera
Impatiens parviflora
Iris pseudacorus
Isatis tinctoria
Jacobaea vulgaris
Lamiastrum galeobdolon
Lepidium latifolium
Leucanthemum vulgare
Linaria dalmatica ssp. dalmatica
Linaria vulgaris
Ludwigia hexapetala
Ludwigia peploides
Lycopsis arvensis
Lysimachia vulgaris
Lythrum salicaria
Mirabilis nyctaginea
Myriophyllum aquaticum
Myriophyllum heterophyllum
Myriophyllum spicatum
Nymphaea odorata
Nymphoides peltata
Onopordum acanthium
Persicaria wallichii
Phalaris arundinacea
Phragmites australis
Polygonum sp.
Polygonum aubertii
Polygonum x bohemicum
Polygonum cuspidatum
Polygonum sachalinense
Potentilla recta
Prunus avium
Prunus laurocerasus
Pueraria montana var. lobata
Ranunculus acris
Ranunculus repens
Rhaponticum repens
Robinia pseudoacacia
Rosa multiflora
Rubus armeniacus
Rubus bifrons
Rubus discolor
Rubus laciniatus
Salvia aethiopis
Salvia pratensis
Salvia sclarea
Schoenoplectus mucronatus
Silybum marianum
Solanum dulcamara
Solanum rostratum
Solvia sessilis
Sonchus arvensis
Sorbus aucuparia
Spartina alterniflora
Spartina anglica
Spartina densiflora
Spartina patens
Spartium junceum
Tamarix ramosissima
Tanacetum vulgare
Tussilago farfara
Ulex europaeus
Zygophyllum fabago
Orange & yellow flowers
Pink & purple flowers
White & green flowers
Aquatic plants
Related information
Related agencies
Languages
Find information on noxious weed identification and control in multiple languages:
Program offices are located at 201 S. Jackson St., Suite 600, Seattle, WA 98104. To contact staff, see the Noxious Weed Control Program Directory , send an email , or call 206-477-WEED (206-477-9333).