Wash. Admin. Code § 16-750-015
| Common Name | Scientific Name |
| absinth wormwood | Artemisia absinthium |
| Austrian fieldcress | Rorippa austriaca |
| babysbreath | Gypsophila paniculata |
| beach grass, European, American, and hybrids | Ammophila arenaria, A. breviligulata, and A. arenaria x breviligulata |
| black henbane | Hyoscyamus niger |
| blackberry, evergreen | Rubus laciniatus |
| blackberry, Himalayan | Rubus bifrons |
| blackgrass | Alopecurus myosuroides |
| black locust | Robinia pseudoacacia |
| buffalobur | Solanum rostratum |
| cereal rye | Secale cereale |
| common barberry | Berberis vulgaris |
| common catsear | Hypochaeris radicata |
| common groundsel | Senecio vulgaris |
| common holly | Ilex aquifolium, except where commercially grown |
| 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 |
| Norway maple | Acer platanoides |
| 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 25-24-076, s 16-750-015, filed 12/1/25, effective 1/1/26; WSR 25-08-024, s 16-750-015, filed 3/25/25, effective 4/25/25; WSR 23-23-168, § 16-750-015, filed 11/21/23, effective 1/1/24; 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.]