Pasco, WA Invasive Plant Rules: Prohibited Species (2026)

050, Shoreline vegetation conservation, sets the operative rule: subsection (5) states that removal of noxious weeds and/or invasive species shall be incorporated in management and mitigation plans, as necessary, to facilitate establishment of a stable community of native plants. That duty attaches within the city's shoreline jurisdiction along the Columbia and Snake rivers, the area covered by Pasco's SMP. 070, gives the term teeth by pointing to an outside, updateable list: "Invasive, nonnative vegetation species" means the plants listed for Eastern Washington in Washington State Noxious Weed Board Publication No.

820-264E, or the latest version of that document. Because the definition tracks "the latest version," the list of regulated species updates automatically as the state board revises its Eastern Washington guidance, without the city having to amend its own code. 010(10) carves the same exception into the rules for new agricultural activities along cropland and pasture adjacent to waters or wetlands. 070 expressly excludes removal of invasive or noxious weeds from that definition. 25 can also credit invasive plant removal as an enhancement measure that improves ecological function.