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Class A Noxious Weeds, 2009 List
(eradication required throughout Washington State including King County)
| Common Name | Scientific Name |
|---|
| buffalobur |
Solanum rostratum |
| common crupina |
Crupina vulgaris |
| cordgrass, common |
Spartina anglica |
| cordgrass, dense flower |
Spartina densiflora |
| cordgrass, salt meadow |
Spartina patens |
| cordgrass, smooth |
Spartina alterniflora |
| dyers woad |
Isatis tinctoria |
| eggleaf spurge |
Euphorbia oblongata |
| false brome |
Brachypodium sylvaticum |
| floating primrose-willow |
Ludwigia peploides |
| flowering-rush |
Butomus umbellatus |
| garlic mustard |
Alliaria petiolata |
| giant hogweed |
Heracleum mantegazzianum |
| goatsrue |
Galega officinalis |
| hawkweed, European |
Hieracium sabaudum |
| hawkweed, yellow devil |
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 |
| reed sweetgrass |
Glyceria maxima |
| ricefield bulrush |
Schoenoplectus mucronatus |
| sage, clary |
Salvia sclarea |
| sage, Mediterranean |
Salvia aethiopis |
| shiny geranium |
Geranium lucidum |
| 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 |
