Invasive Plant Rules in Norwalk, CA (2026)
2 verified invasive plant rules for Norwalk, California, sourced directly from the municipal code and official government pages.
Verified from official government sources
Prohibited Species
Norwalk's Water Efficient Landscape Ordinance defines invasive plant species as plants not historically found in California that spread outside cultivated areas and damage environmental or economic resources, and it strongly discourages using them, such as those on the California Invasive Plant Council's list, in any new or rehabilitated landscape design plan.
Norwalk Invasive Plant Species in Landscape Design
Light RestrictionsNorwalk, CA, Municipal Code § 17.03.020(B); § 17.03.020(E)(1)(f)
§ 17.03.020(B). Definitions. "Invasive plant species" means species of plants not historically found in California that spread outside cultivated areas and can damage environmental or economic resources. Invasive species may be regulated by County agricultural agencies as noxious species. Lists of invasive plants are maintained at the California Invasive Plant Inventory and USDA invasive and no...
Tree-of-Heaven Removal
Norwalk's Street Tree Ordinance names Ailanthus, commonly called tree of heaven, among the species it flatly bars from being planted in any street or public place. Municipal Code Section 12.32.240 lists it alongside Poplar, Willow, Cottonwood, Mountain Ash and Bigleaf Maple as prohibited trees maintained on a public list by the Director of Public Services.
Norwalk Bans Planting Tree of Heaven as Street Tree
Some RestrictionsNorwalk, CA, Municipal Code § 12.32.240
§ 12.32.240. Prohibited trees. No person shall plant in any street or public place any of the following species of trees: Poplar, Willow, Cottonwood, fruit trees (except ornamental type), nut trees, Ailantus, Mountain Ash, Organ or BigLeafed Maple, or any other tree contained on a prohibited trees list maintained by the Director of Public Services and available to the public.
Looking for Los Angeles County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Norwalk city rules.
Invasive Plant Rules in Los Angeles County →