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

Orange & yellow flowers

bighead knapweed

buffalobur

common tansy

Dalmatian toadflax

dyer's woad

garden loosestrife

gorse

leafy spurge

myrtle spurge

orange hawkweed

perennial sowthistle

rush skeletonweed

Scot's broom

Spanish broom

common St. Johnswort

sulfur cinquefoil

tansy ragwort

Texas blueweed

velvetleaf

yellow hawkweed

yellow starthistle

yellow toadflax

Pink & purple flowers

annual bugloss

bittersweet nightshade

black knapweed

brown knapweed

bull thistle

Canada thistle

clary sage

common bugloss

common crupina

diffuse knapweed

goatsrue

herb Robert

kudzu

meadow clary

meadow knapweed

Mediterranean sage

milk thistle

musk thistle

policeman's helmet

purple loosestrife

purple starthistle

Russian knapweed

saltcedar

Scotch thistle

slenderflower thistle

spotted knapweed

viper's bugloss

vochin knapweed

wild four o'clock

White & green flowers

English ivy

field bindweed

garlic mustard

giant hogweed

giant knotweed

Himalayan knotweed

Japanese knotweed

kochia

lawnweed

old man's beard

oxeye daisy

perennial pepperweed

poison hemlock

Spurge Laurel (Daphne laureola)

Syrian bean-caper

wild carrot

yellow nutsedge

Aquatic plants

Brazilian elodea

common cordgrass

dense-flowered cordgrass

Eurasian watermilfoil

fanwort

floating primrose-willow (Ludwigia peploides)

yellow flag iris

fragrant water lily

hydrilla

parrotfeather

phragmites

reed canary grass

saltmeadow cordgrass

smooth cordgrass

water primrose

yellow floating heart

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).

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