Noxious Weeds

B Noxious Weeds Search

Class B noxious weeds are nonnative species whose distribution is limited to portions of Washington State.

 

Annual Bugloss
Anchusa arvensis

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Black Knapweed
Centaurea nigra

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Blueweed
Echium vulgare

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Bohemian Knotweed
Polygonum x bohemicum

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Brazilian Elodea
Egeria densa

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Brown Knapweed
Centaurea jacea

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Butterfly Bush
Buddleja davidii

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Camelthorn
Alhagi maurorum

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Common Bugloss
Anchusa officinalis

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Common Fennel
Foeniculum vulgare

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Common Reed
Phragmites australis

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Dalmatian Toadflax
Linaria dalmatica ssp. dalmatica

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Diffuse Knapweed
Centaurea diffusa

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Eurasian Watermilfoil
Myriophyllum spicatum

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Fanwort
Cabomba caroliniana

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Garden Loosestrife
Lysimachia vulgaris

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Giant Knotweed
Polygonum sachalinense

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Gorse
Ulex europaeus

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grass-leaved arrowhead
Sagittaria graminea

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Hairy Willow-Herb
Epilobium hirsutum

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Hawkweed Oxtongue
Picris hieracioides

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Herb-Robert
Geranium robertianum

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Himalayan Knotweed
Polygonum polystachyum

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Hoary Alyssum
Berteroa incana

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Houndstongue
Cynoglossum officinale

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Indigobush
Amorpha fruticosa

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Japanese Knotweed
Polygonum cuspidatum

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Kochia
Kochia scoparia

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Leafy Spurge
Euphorbia esula

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Lesser celandine
Ficaria verna

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Meadow Knapweed
Centaurea jacea x nigra

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Musk Thistle
Carduus nutans

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Myrtle Spurge
Euphorbia myrsinites

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Nonnative species & hybrids of meadow subgenus
Hieracium subgenus Pilosella

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Nonnative species & hybrids of wall subgenus
Hieracium subgenus Hieracium

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Orange Hawkweed
Hieracium aurantiacum

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Parrotfeather
Myriophyllum aquaticum

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Perennial Pepperweed
Lepidium latifolium

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Plumeless Thistle
Carduus acanthoides

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Poison Hemlock
Conium maculatum

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Policeman's Helmet
Impatiens glandulifera

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Puncturevine
Tribulus terrestris

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Purple Loosestrife
Lythrum salicaria

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Rush Skeletonweed
Chondrilla juncea

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Russian Knapweed
Acroptilon repens

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Saltcedar
Tamarix ramosissima

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Scotch Broom
Cytisus scoparius

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Scotch Thistle
Onopordum acanthium

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Spotted Knapweed
Centaurea stoebe

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Spurge Laurel
Daphne laureola

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Sulfur Cinquefoil
Potentilla recta

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Tansy Ragwort
Senecio jacobaea

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Velvetleaf
Abutilon theophrasti

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Wand Loosestrife

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Water Primrose
Ludwigia hexapetala

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White Bryony
Bryonia alba

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Wild Chervil
Anthriscus sylvestris

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Yellow Archangel
Lamiastrum galeobdolon

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Yellow Floating Heart
Nymphoides peltata

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Yellow Nutsedge
Cyperus esculentus

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Yellow Starthistle
Centaurea solstitialis

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