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Washington State Weeds

Washington State Noxious Weed List


Absinth Wormwood

annual bugloss
Annual Bugloss

austrian fieldcress pierce county weed
Austrian Fieldcress


Balkan Catchfly

big head knapweed
Bighead Knapweed

black-henbane
Black Henbane

black knapweed
Black Knapweed


Blackgrass


Blooddrops


Blueweed


Bohemian Knotweed

Brazilian Elodia
Brazilian Elodia

Buffalobur
Buffalobur


Bull Thistle


Butterfly Bush

camelthorn
Camelthorn

Canada thistle
Canada Thistle

Cereal Rye
Cereal Rye

Cherry Laurel
Cherry Laurel

Clary Sage
Clary Sage

washington state noxious weeds
Common Barberry

Common Bugloss
Common Bugloss

common catsear
Common Catsear

Common Cordgrass
Common Cordgrass

Common Crupina
Common Crupina

Common Fennel
Common Fennel

Common Groundsel
Common Groundsel

Common Hawkweed
Common Hawkweed

Common Ivy
Common Ivy

Common Reed
Common Reed

Common St. Johns Wort
Common St. Johnswort

Common Tansy
Common Tansy

Common Teasel
Common Teasel

Creeping Fieldcress
Creeping Fieldcress

Curlyleaf Pondweed
Curlyleaf Pondweed

Dalmatian Toadflax
Dalmatian Toadflax

Dense-Flowered Cordgrass
Dense-Flowered Cordgrass

Diffuse Knapweed
Diffuse Knapweed

Distaffthistle
Distaff Thistle

Dyers Woad
Dyers Woad

Eggleaf Spurge
Eggleaf Spurge

English Holly
English Holly

Eurasian Frogs Bit
Eurasian Frogs-bit

Eurasian Watermilfoil
Eurasian Watermilfoil

European Coltsfoot
European Coltsfoot

European Hawkweed
European Hawkweed

European Mountain Ash
European Mountain Ash

Evergreen Blackberry
Evergreen Blackberry

Fanwort
Fanwort

Featherhead Knapweed
Featherhead Knapweed

Field Bindweed
Field Bindweed

Floating Primrose-Willow
Floating Primrose-Willow

Flowering Rush
Flowering Rush

Fragrant Water Lily
Fragrant Water Lily

Washington state noxious weeds
French Broom

Garden Loosestrife
Garden Loosestrife

Garlic Mustard
Garlic Mustard

Giant Hogweed
Giant Hogweed

Giant Knotweed
Giant Knotweed

Giant Reed
Giant Reed

Goatsrue
Goatsrue

Gorse
Gorse

Grass-Leaved Arrowhead
Grass Leaved-Arrowhead

Hairy Whitetop
Hairy Whitetop

Hairy Willow Herb
Hairy Willow Herb

Hawkweed Oxtongue
Hawkweed Oxtongue

Hawkweed
Hawkweed Species

Herb-Robert
Herb Robert


Himalayan Blackberry

Himalayan Knotweed
Himalayan Knotweed

Hoaryalyssum
Hoary Alyssum

Hoary Cress
Hoary Cress

Houndstongue
Houndstongue

Hydrilla
Hydrilla

Indigobush
Indigobush

Italian Thistle
Italian Thistle

Japanese Knotweed
Japanese Knotweed

Johnsongrass
Johnsongrass

Jointed Goatgrass
Jointed Goatgrass

Kochia
Kochia

Kudzu
Kudzu

Large Periwinkle
Large Perwinkle

Lawn Burweed
Lawn Burweed

Leafy Spurge
Leafy Spurge

Lesser Celandine
Lesser Celandine

Longspine Sandbur
Longspine Sandbur

Lovegrassedge
Lovegrass Sedge

Malta Starthistle
Malta Starthistle

Meadow Clary
Meadow Clary

Meadow Knapweed
Meadow Knapweed

Mediterranean Sage
Mediterranean Sage

Milk Thistle
Milk Thistle

Mouse-ear Hawkweed
Mouse-Ear Hawkweed

Myrtle Spurge
Myrtle Spurge

Narrowleaved Crosswort
Narrowleaved Crosswort

orange hawkweed
Orange Hawkweed

Oriental Clematis
Oriental Clemati

Oxeye daisy
Oxeye Daisy

Pampasgrass
Pampas Grass

Parrotfeather
Parrotfeather

Perennial Pepperweed
Perennial Pepperweed

Perennial Sowthistle
Perennial Sowthistle

periwinkle
Periwinkle

Plumeless Thistle
Plumeless Thistle

Poison Hemlock
Poison Hemlock

Polar Hawkweed
Polar Hawkweed

Policemans Helmet
Policemans Helmet

Puncturevine
Puncturevine

Purple Loosestrife
Purple Loosestrife

Purple Starthistle
Purple Starthistle

Queen-Devil Hawkweed
Queen-Devil Hawkweed

Reed Canarygrass
Reed Canarygrass

Reed Sweetgrass
Reed Sweetgrass

Ricefield Bulrush
Ricefield Bulrush

Rush Skeletonweed
Rush Skeletonweed

Russian Knapweed
Russian Knapweed

Salt Meadow Cordgrass
Salt Meadow Cordgrass

Saltcedar
Saltcedar

Scentless Mayweed
Scentless Mayweed

Scotch Broom
Scotch Broom

Scotch Thistle
Scotch Thistle

Shiny Geranium
Shiny Geranium

Silverlace Vine
Silverlace Vine


Silverleaf Nightshade

Silvery Cinquefoil
Silvery Cinquefoil

Skeletonleaf Pursage
Skeleton-Leaf Bursage

Slenderflower Thistle
Slenderflower Thistle

Small-Flowered Jewelweed
Sm-Flowered Jewelweed

Smooth Cordgrass
Smooth Cordgrass

Smooth Hawkweed
Smooth Hawkweed

Smoothseed Alfalfa Dodder
Smoothseed Dodder

Spanish Broom
Spanish Broom

Spikeweed
Spikeweed

Spiny Cocklebur
Spiny Cocklebur

Spotted jewelweed
Spotted Jewelweed

Spotted Knapweed
Spotted Knapweed

Spurge Flax
Spurge Flax

Spurge Laurel
Spurge Laurel

Sulfur Cinquefoil
Sulfer Cinquefoil

Swainsonpea
Swaisonpea

Swollen Bladderwort
Swollen Bladderwort

Syrian Beancaper
Syrian Beancaper

Tallhawkweed
Tall Hawkweed

Tallverbana
Tall Verbena

Tansy Ragwort
Tansy Ragwort

Texas Blueweed
Texas Blueweed

Tree of Heaven
Tree of Heaven

Variable-Leaf Milfoil
Variable-Leaf Milfoil

Velvetleaf
Velvetleaf

Venice Mallow
Venice Mallow

Vochin Knapweed
Vochin Knapweed

Wandloosestrife
Wand Loosestrife

Water Hyacinth
Water Hyacinth

Water Primrose
Water Primrose

watercress
Watercress

White Bryony
White Bryony

White Cockle
White Cockle

Wild Carrot
Wild Carrot

Wild Chervil
Wild Chervil

Yellow archangel
Yellow Archangel

Yellow-Devil Hawkweed
Yellow-Devil Hawkweed

Yellow Flag Iris
Yellow Flag Iris

Yellow Floating Heart
Yellow Floating Heart

Yellow Hawkweed
Yellow Hawkweed

Yellow Nutsedge
Yellow Nutsedge

Yellow Starthistle
Yellow Starthistle

Yellow Toadflax
Yellow Toadflax