| Common Name | Scientific Name |
| archangel, yellow | Lamiastrum galeobdolon |
| babysbreath | Gypsophila paniculata |
| beard, old man's | Clematis vitalba |
| bindweed, field | Convolvulus arvensis |
| canarygrass, reed | Phalaris arundinacea |
| cockle, white | Silene latifolia ssp. alba |
| cocklebur, spiny | Xanthium spinosum |
| cress, hoary | Cardaria draba |
| dodder, smoothseed alfalfa | Cuscuta approximata |
| goatgrass, jointed | Aegilops cylindrica |
| groundsel, common | Senecio vulgaris |
| hawkweed, common | Hieracium lachenalii |
| hawkweed, other nonnative species | Hieracium sp., except species designated in the note in the left-hand column |
| Note: | |
| This listing includes all species of Hieracium, except the following: | |
| • Species designated as Class A noxious weeds in WAC 16-750-005; | |
| • Species designated as Class B noxious weeds in WAC 16-750-011; | |
| • Native species designated below: | |
| – Canada hawkweed (H. canadense) | |
| – houndstongue hawkweed (H. cynoglossoides) | |
| – long-beaked hawkweed (H. longiberbe) | |
| – narrow-leaved hawkweed (H. umbellatum) | |
| – slender hawkweed (H. gracile) | |
| – western hawkweed (H. albertinum) | |
| – white-flowered hawkweed (H. albiflorum) | |
| – woolley-weed (H. scouleri) | |
| henbane, black | Hyoscyamus niger |
| iris, yellow flag | Iris pseudacorus |
| ivy, English, 4 cultivars only: | Hedera hibernica 'Hibernicia' |
| Hedera helix 'Baltica' | |
| Hedera helix 'Pittsburgh' | |
| Hedera helix 'Star' | |
| mayweed, scentless | Matricaria perforata |
| pondweed, curly-leaf | Potamogeton crispus |
| rye, cereal | Secale cereale |
| spikeweed | Hemizonia pungens |
| St. Johnswort, common | Hypericum perforatum |
| tansy, common | Tanacetum vulgare |
| thistle, bull | Cirsium vulgare |
| thistle, Canada | Cirsium arvense |
| toadflax, yellow | Linaria vulgaris |
| water lily, fragrant | Nymphaea odorata |
| whitetop, hairy | Cardaria pubescens |
| willow-herb, hairy | Epilobium hirsutum |
| wormwood, absinth | Artemisia absinthium |