Noxious Weed List
The Spokane County Noxious Weed Control Board adopts a Noxious Weed List (PDF) each year. The list categorizes weeds into 4 classes: Class A, Class B Designates, Class B and Class C, according to the seriousness of the threat they pose to the County.
Common Name | Scientific Name | Picture 1 | Picture 2 | Picture 3 |
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Blueweed Additional Information |
Echium vulgare |
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Broom, Scotch Additional Information |
Cytisus scoparius |
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Buffalobur Additional Information |
Solanum rostratum |
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Bugloss, Common Additional Information |
Anchusa officinalis |
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Chervil, Wild Additional Information |
Anthriscus sylvestris |
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Cress, Hoary Additional Information |
Lepidium draba |
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Daisy, Oxeye Additional Information |
Leucanthemum vulgare |
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Four O'Clock, Wild Additional Information |
Mirabilis nyctaginea |
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Hawkweed, Orange Additional Information |
Hieracium aurantiacum |
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Hawkweed, Yellow Additional Information |
Hieracium caespitosum |
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Helmet, Policeman's Additional Information |
Impatiens glandulifera |
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Herb-Robert Additional Information |
Geranium robertianum | |||
Knapweed, Diffuse Additional Information |
Centaurea diffusa |
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Knapweed, Russian Additional Information |
Acroptilon repens |
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Knapweed, Spotted Additional Information |
Centaurea stoebe |
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Kochia Additional Information |
Kochia scoparia |
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Loosestrife, Purple Additional Information |
Lythrum salicaria |
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Mustard, Garlic Additional Information |
Alliaria petiolata |
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Puncturevine Additional Information |
Tribulus terrestris |
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Saltcedar Additional Information |
Tamarix ramosissima |
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Skeletonweed, Rush Additional Information |
Chondrilla juncea |
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Spurge, Leafy Additional Information |
Euphorbia esula |
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Starthistle, Yellow Additional Information |
Centaurea solstitialis |
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Thistle, Canada Additional Information |
Cirsium arvense |
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Thistle, Musk Additional Information |
Carduus nutans |
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Thistle, Scotch Additional Information |
Onopordum acanthium |
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Toadflax, Dalmatian Additional Information |
Linaria dalmatica |