PDFWAC 16-750-005
State noxious weed list—Class A noxious weeds.
Common Name | Scientific Name |
broom, French | Genista monspessulana |
broom, Spanish | Spartium junceum |
common crupina | Crupina vulgaris |
cordgrass, common | Spartina anglica |
cordgrass, dense-flowered | Spartina densiflora |
cordgrass, salt meadow | 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 |
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 |
Syrian bean-caper | 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 |
[Statutory Authority: Chapters 17.10 and 34.05 RCW. WSR 23-23-168, § 16-750-005, filed 11/21/23, effective 1/1/24; WSR 20-24-098, § 16-750-005, filed 11/30/20, effective 1/1/21; WSR 19-24-052, § 16-750-005, filed 11/26/19, effective 1/1/20; WSR 17-24-035, § 16-750-005, filed 11/29/17, effective 1/1/18; WSR 16-24-031, § 16-750-005, filed 11/30/16, effective 1/1/17; WSR 14-24-103, § 16-750-005, filed 12/2/14, effective 1/2/15; WSR 14-02-072, § 16-750-005, filed 12/30/13, effective 1/30/14; WSR 13-01-038, § 16-750-005, filed 12/12/12, effective 1/12/13; WSR 12-01-050, § 16-750-005, filed 12/15/11, effective 1/15/12; WSR 09-01-071, § 16-750-005, filed 12/15/08, effective 1/16/09; WSR 07-24-023, § 16-750-005, filed 11/28/07, effective 1/1/08; WSR 05-24-026, § 16-750-005, filed 11/30/05, effective 12/31/05; WSR 03-04-001, § 16-750-005, filed 1/22/03, effective 2/22/03. Statutory Authority: Chapter 17.10 RCW. WSR 99-24-029, § 16-750-005, filed 11/23/99, effective 1/3/00; WSR 98-24-026, § 16-750-005, filed 11/23/98, effective 1/2/99; WSR 97-24-051, § 16-750-005, filed 11/26/97, effective 1/2/98. Statutory Authority: RCW 17.10.080. WSR 96-06-030, § 16-750-005, filed 2/29/96, effective 3/31/96. Statutory Authority: Chapter 17.10 RCW. WSR 93-01-004, § 16-750-005, filed 12/2/92, effective 1/2/93; WSR 91-24-072, § 16-750-005, filed 12/2/91, effective 1/2/92; WSR 91-01-016, § 16-750-005, filed 12/7/90, effective 1/7/91; WSR 90-01-004, § 16-750-005, filed 12/7/89, effective 1/7/90; WSR 88-24-002 (Order 26, Resolution No. 26), § 16-750-005, filed 11/29/88. Statutory Authority: RCW 17.10.080. WSR 88-07-016 (Order 22, Resolution No. 22), § 16-750-005, filed 3/7/88.]