Noxious Weeds

C Noxious Weeds Search

Class C noxious weeds are either already widespread in Washington or are of special interest to the agricultural industry.

 

absinth wormwood
Artemisia absinthium

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Austrian fieldcress
Rorippa austriaca

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baby's breath
Gypsophila paniculata

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black henbane
Hyoscyamus niger

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blackgrass
Alopecurus myosuroides

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buffalobur
Solanum rostratum

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bull thistle
Cirsium vulgare

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Canada thistle
Cirsium arvense

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cereal rye
Secale cereale

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common barberry
Berberis vulgaris

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common catsear
Hypochaeris radicata

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common groundsel
Senecio vulgaris

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common St. Johnswort
Hypericum perforatum

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common tansy
Tanacetum vulgare

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common teasel
Dipsacus fullonum

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curlyleaf pondweed
Potamogeton crispus

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English ivy
Hedera helix

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evergreen blackberry
Rubus laciniatus

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field bindweed
Convolvulus arvensis

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fragrant water lily
Nymphaea odorata

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hairy whitetop
Cardaria pubescens

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Himalayan blackberry
Rubus armeniacus

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hoary cress
Cardaria draba

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Japanese eelgrass
Zostera japonica

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jointed goatgrass
Aegilops cylindrica

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lawnweed
Soliva sessilis

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lepyrodiclis
Lepyrodiclis holosteoides

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longspine sandbur
Cenchrus longispinus

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nonnative cattails
Typha species

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old man's beard
Clematis vitalba

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oxeye daisy
Leucanthemum vulgare

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perennial sowthistle
Sonchus arvensis ssp. arvensis

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reed canarygrass
Phalaris arundinacea

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Russian olive
Elaeagnus angustifolia

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scentless mayweed
Matricaria perforata

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smoothseed alfalfa dodder
Cuscuta approximata

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spikeweed
Hemizonia pungens

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spiny cocklebur
Xanthium spinosum

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Swainsonpea
Sphaerophysa salsula

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tree-of-heaven
Ailanthus altissima

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white cockle
Silene latifolia ssp. alba

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wild carrot
Daucus carota

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yellow flag iris
Iris pseudacorus

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yellow toadflax
Linaria vulgaris

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