Washington State Noxious Weed Control Board

Class A noxious weeds are non-native species whose distribution in Washington State is still limited.


buffalobur Solanum rostratum	common crupina Crupina vulgaris	cordgrass, common Spartina anglica	cordgrass, dense flower Spartina densiflora	cordgrass, salt meadow Spartina patens

dyers woad Isatis tinctoria	eggleaf spurge Euphorbia oblongata	floating primrose-willow Ludwigia peploides	garlic mustard Alliaria petiolata	giant hogweed Heracleum mantegazzianum

goatsrue Galega officinalis	hawkweed, European Hieracium sabaudum NEW LISTING 2008	hawkweed, yellow devi l Hieracium floribundum	hydrilla Hydrilla verticillata	johnsongrass Sorghum halepense

knapweed, bighead Centaurea macrocephala	knapweed, Vochin Centaurea nigrescens	kudzu Pueraria montana var. lobata	meadow clary Salvia pratensis	purple starthistle Centaurea calcitrapa
	Picture coming soon!
reed sweetgrass Glyceria maxima	ricefield bulrush Schoenoplectus mucronatus	sage, clary Salvia sclarea	sage, Mediterranean Salvia aethiopis	silverleaf nightshade Solanum elaeagnifolium

Spanish broom Spartium junceum	spurge flax Thymelaea passerina	Syrian bean-caper Zygophyllum fabago	Texas blueweed, Helianthus ciliaris	thistle, Italian Carduus pycnocephalus

thistle, milk Silybum marianum	thistle, slenderflower Carduus tenuiflorus	variable-leaf milfoil Myriophyllum heterophyllum	velvetleaf Abutilon theophrasti	wild four o'clock Mirabilis nyctaginea

Class A Noxious Weeds