Vista, CA Invasive Plant Rules: Prohibited Species (2026)

010 as any plant species that is troublesome, aggressive, intrusive, detrimental, or destructive to agriculture, silviculture, or important native species and difficult to control or eradicate, expressly borrowing that definition from California Food and Agricultural Code Section 5004 rather than writing its own botanical list. 020(C) then turns that definition into an operative rule: any noxious or invasive weed or plant that a federal, state, or county government has designated as injurious to public health, agriculture, recreation, wildlife, or property is automatically a public nuisance on whatever parcel it's growing on, city-wide, with no separate local listing process required.

The nuisance duty falls on the parcel's owner or 'responsible party,' a term the chapter defines broadly enough to include renters, lessees, or anyone else controlling the land. 020(C) shifts as the California Department of Food and Agriculture, the county agricultural commissioner, or federal agencies add or remove species from their own noxious and invasive weed lists. 62 applies here: a written Notice to Abate, a twenty-one day compliance window, and forced abatement with a lien on the property if the owner doesn't act.