PDFWAC 16-750-015

State noxious weed list—Class C noxious weeds.

Common Name
Scientific Name
absinth wormwood
Artemisia absinthium
Austrian fieldcress
Rorippa austriaca
babysbreath
Gypsophila paniculata
black henbane
Hyoscyamus niger
blackberry, evergreen
Rubus laciniatus
blackberry, Himalayan
Rubus bifrons
blackgrass
Alopecurus myosuroides
buffalobur
Solanum rostratum
cereal rye
Secale cereale
common barberry
Berberis vulgaris
common catsear
Hypochaeris radicata
common groundsel
Senecio vulgaris
common St. Johnswort
Hypericum perforatum
common teasel
Dipsacus fullonum
curly-leaf pondweed
Potamogeton crispus
English hawthorn
Crataegus monogyna
English ivy 4 cultivars only:
Hedera hibernica 'Hibernica'
 
Hedera helix 'Baltica'
 
Hedera helix 'Pittsburgh'
 
Hedera helix 'Star'
Eurasian watermilfoil hybrid
Myriophyllum spicatum x M. sibiricum
field bindweed
Convolvulus arvensis
fragrant water lily
Nymphaea odorata
green alkanet
Pentaglottis sempervirens
hairy whitetop
Lepidium appelianum
hoary cress
Lepidium draba
Italian arum
Arum italicum
Japanese eelgrass
Nanozostera japonica
jointed goatgrass
Aegilops cylindrica
jubata grass
Cortaderia jubata
lawnweed
Soliva sessilis
longspine sandbur
Cenchrus longispinus
Medusahead
Taeniatherum caput-medusae
nonnative cattail species and hybrids
Including, but not limited to, Typha angustifolia, T. domingensis and T. x glauca
old man's beard
Clematis vitalba
oxeye daisy
Leucanthemum vulgare
pampas grass
Cortaderia selloana
perennial sowthistle
Sonchus arvensis ssp. arvensis
reed canarygrass
Phalaris arundinacea
Russian olive
Elaeagnus angustifolia
scentless mayweed
Tripleurospermum inodorum
smoothseed alfalfa dodder
Cuscuta approximata
spikeweed
Centromadia pungens
spiny cocklebur
Xanthium spinosum
spotted jewelweed
Impatiens capensis
Swainsonpea
Sphaerophysa salsula
thistle, bull
Cirsium vulgare
thistle, Canada
Cirsium arvense
tree-of-heaven
Ailanthus altissima
ventenata
Ventenata dubia
white cockle
Silene latifolia
wild carrot (except subs. sativus where grown commercially or for food)
Daucus carota
yellow flag iris
Iris pseudacorus
yellow toadflax
Linaria vulgaris
[Statutory Authority: Chapters 17.10 and 34.05 RCW. WSR 22-01-040, § 16-750-015, filed 12/7/21, effective 1/1/22; WSR 20-24-098, § 16-750-015, filed 11/30/20, effective 1/1/21; WSR 17-24-035, § 16-750-015, filed 11/29/17, effective 1/1/18; WSR 15-24-078, § 16-750-015, filed 11/30/15, effective 12/31/15; WSR 14-24-103, § 16-750-015, filed 12/2/14, effective 1/2/15; WSR 14-02-072, § 16-750-015, filed 12/30/13, effective 1/30/14; WSR 13-01-038, § 16-750-015, filed 12/12/12, effective 1/12/13; WSR 12-01-050, § 16-750-015, filed 12/15/11, effective 1/15/12; WSR 10-24-037, § 16-750-015, filed 11/22/10, effective 12/23/10; WSR 09-01-071, § 16-750-015, filed 12/15/08, effective 1/16/09; WSR 07-24-023, § 16-750-015, filed 11/28/07, effective 1/1/08; WSR 06-24-056, § 16-750-015, filed 12/4/06, effective 1/4/07; WSR 05-01-012, § 16-750-015, filed 12/2/04, effective 1/2/05. Statutory Authority: Chapter 17.10 RCW. WSR 04-13-014, § 16-750-015, filed 6/4/04, effective 7/5/04. Statutory Authority: Chapters 17.10 and 34.05 RCW. WSR 03-24-012, § 16-750-015, filed 11/20/03, effective 12/21/03; WSR 03-04-001, § 16-750-015, filed 1/22/03, effective 2/22/03. Statutory Authority: Chapter 17.10 RCW. WSR 01-24-035, § 16-750-015, filed 11/28/01, effective 12/29/01; WSR 00-24-017, § 16-750-015, filed 11/28/00, effective 1/2/01; WSR 99-24-029, § 16-750-015, filed 11/23/99, effective 1/3/00; WSR 98-24-026, § 16-750-015, filed 11/23/98, effective 1/2/99; WSR 97-06-108, § 16-750-015, filed 3/5/97, effective 4/5/97. Statutory Authority: RCW 17.10.080. WSR 96-06-030, § 16-750-015, filed 2/29/96, effective 3/31/96. Statutory Authority: Chapter 17.10 RCW. WSR 95-06-002, § 16-750-015, filed 2/16/95, effective 3/19/95; WSR 94-01-076, § 16-750-015, filed 12/10/93, effective 1/10/94; WSR 93-01-004, § 16-750-015, filed 12/2/92, effective 1/2/93; WSR 91-24-072, § 16-750-015, filed 12/2/91, effective 1/2/92; WSR 91-01-016, § 16-750-015, filed 12/7/90, effective 1/7/91; WSR 90-01-004, § 16-750-015, filed 12/7/89, effective 1/7/90; WSR 88-24-002 (Order 26, Resolution No. 26), § 16-750-015, filed 11/29/88. Statutory Authority: RCW 17.10.080. WSR 88-07-016 (Order 22, Resolution No. 22), § 16-750-015, filed 3/7/88.]