All plants and plant parts of the following are regulated articles under this chapter:
| Scientific Name | Common Name |
| Butomus umbellatus | flowering rush |
| Cabomba caroliniana | fanwort |
| Crassula helmsii | Australian swamp stonecrop |
| Egeria densa | Brazilian elodea |
| Epilobium hirsutum | hairy willow herb |
| Glossostigma diandrum | mud mat |
| Gyceria maxima | reed sweetgrass, tall manna grass |
| Hydrilla verticillata | hydrilla |
| Hydrocharis morsus-ranae | European frog-bit |
| Lagarosiphon major | African elodea |
| Ludwigia hexapetala | water primrose |
| Ludwigia peploides | floating primrose-willow |
| Lysimachia vulgaris | garden loosestrife |
| Murdannia keisak | marsh dew flower, Asian spiderwort |
| Myriophyllum aquaticum | parrotfeather |
| Myriophyllum heterophyllum | variable-leaf milfoil |
| Myriophyllum spicatum | Eurasian watermilfoil |
| Najas minor | slender-leaved naiad, brittle naiad |
| Nymphoides peltata | yellow floating heart |
| Sagittaria graminea | grass-leaved arrowhead |
| Sagittaria platyphylla | delta arrowhead |
| Schoenoplectus mucronatus | ricefield bulrush |
| Spartina alterniflora | smooth cordgrass |
| Spartina anglica | common cordgrass |
| Spartina densiflora | dense-flowered cordgrass |
| Spartina patens | salt meadow cordgrass |
| Stratiotes aloides | water soldier |
| Trapa natans | water chestnut, bull nut |
| Trapa bicornus | water caltrap, devil's pod, bat nut |
| Utricularia inflata | swollen bladderwort |
This list is comprised of the most recent and accepted scientific and common names of the quarantine plant species. Regulated status also applies to all synonyms of these botanical names.
[Statutory Authority: Chapters 17.10, 17.24, and 34.05 RCW. 09-19-006, § 16-752-505, filed 9/3/09, effective 10/4/09. Statutory Authority: Chapters 17.24 and 34.05 RCW. 05-21-028, § 16-752-505, filed 10/11/05, effective 11/11/05. Statutory Authority: Chapters 17.10, 17.24, and 34.05 RCW. 04-19-004, § 16-752-505, filed 9/2/04, effective 10/3/04. Statutory Authority: Chapters 17.24, 17.10, and 15.13 RCW. 01-01-014, § 16-752-505, filed 12/6/00, effective 1/6/01. Statutory Authority: RCW 17.10.235 and chapter 17.24 RCW. 92-07-024, § 16-752-505, filed 3/10/92, effective 4/10/92.]