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Class A Noxious Weeds
Class A Weeds are non-native species with a limited distribution in Grant County and Washington State. Preventing new infestations and eradicating existing infestations is of the highest priority. Control of these species is required by law.
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Common Crupina
Crupina vulgaris
Cordgrass, Common
Spartina anglica
Cordgrass, Dense-Flowered
Spartina densiflora
Cordgrass, Saltmeadow
Spartina patens
Cordgrass, Smooth
Spartina alterniflora
Dyer's Woad
Isatis tinctoria
Eggleaf Spurge
Euphorbia oblongata
False Brome
Brachypodium sylvaticum
Floating Primrose-Willow
Ludwigia peploides
Flowering Rush
Butomus umbellatus
French Broom
Genista monspessulana
Garlic Mustard
Alliaria petiolata
Giant Hogweed
Heracleum mantegazzianum
Goatsrue
Galega officinalis
Hydrilla
Hydrilla verticillata
Johnsongrass
Sorghum halepense
Knapweed, Bighead
Centaurea macrocephala
Knapweed, Vochin
Centaurea nigrescens
Kudzu
Pueraria montana var. lobata
Meadow Clary
Salvia pratensis
Oriental Clematis
Clematis orientalis
Palmer amaranth
Amaranthus palmeri
Purple Starthistle
Centaurea calcitrapa
Reed Sweetgrass
Glyceria maxima
Ricefield Bulrush
Schoenoplectus mucronatus
Sage, Clary
Salvia sclarea
Sage, Mediterranean
Salvia aethiopis
Silverleaf Nightshade
Solanum elaeagnifolium
Small-flowered jewelweed
Impatiens parviflora
South American spongeplant
Limnobium laevigatum
Spanish Broom
Spartium junceum
Syrian Beancaper
Zygophyllum fabago
Texas Blueweed
Helianthus ciliaris
Thistle, Italian
Carduus pycnocephalus
Thistle, Milk
Silybum marianum
Thistle, Slenderflower
Carduus tenuiflorus
Thistle, Turkish
Carduus cinereus
Variable-leaf Milfoil and Hybrids
Myriophyllum heterophyllum, Myriophyllum heterophyllum x Myriophyllum hippuroides
Wild Four-o'Clock
Mirabilis nyctaginea
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