Class "B" Noxious Weeds
Non-native species presently limited to portions of Washington state. Species are designated for control in regions where they are not yet widespread. Preventing new infestations in these areas is a high priority.
Class "B" plants are designated for control in locations where not yet widespread.
Class "B" noxious weeds found in Benton County are shown below. If you click on the image a larger image will be displayed. If you click on "*details*" the link will take you to the Washington State Noxious Weed Control Board website's description of the plant.
camelthorn, Alhagi maurorum details
common reed, Phragmites australis details
Dalmatian toadflax, Linaria dalmatica ssp. dalmatica details
Eurasian watermilfoil, Myriophyllum spicatum details
hairy willow-herb, Epilobium hirsutum details
houndstongue, Cynoglossum officinale details
indigobush, Amorpha fruticosa details
diffuse knapweed, Centaurea diffusa details
Russian knapweed, Acroptilon repens details
spotted knapweed, Centaurea stoebe details
Bohemian knotweed, Polygonum x bohemicum details
Japanese knotweed, Polygonum cuspidatum details
kochia, Kochia scoparia details
purple loosestrife, Lythrum salicaria details
perennial pepperweed, Lepidium latifolium details
poison hemlock, Conium maculatum details
puncturevine, Tribulus terrestris details
rush skeletonweed, Chondrilla juncea details
Scotch thistle, Onopordum acanthium details
velvetleaf, Abutilon theophrasti details
white bryony, Bryonia alba details
