Caldwell, ID Landscaping Rules: Weed Ordinances (2026)

Weed control in Caldwell operates on two levels. Locally, Caldwell City Code Chapter 7, Article 11 makes overgrown weeds a public nuisance: it is unlawful to allow a nuisance on your property or the abutting right-of-way (07-11-03), and the city's property-maintenance standards require premises to be kept free of weeds, trash, and debris. Enforcement runs through the Code Compliance Division, which issues a written request for voluntary compliance (about ten days) before the city may abate and bill the owner. Statewide, Idaho's Noxious Weed Law, Idaho Code Title 22, Chapter 24, applies in Caldwell as everywhere in Idaho. Section 22-2407 provides that it is the duty and responsibility of all landowners to control noxious weeds on their land, that the cost of control is the landowner's obligation, and that landowners must reimburse the county control authority for work done after a failure to comply with the statutory five-day notice (per Section 22-2405). Idaho's official noxious-weed list (administered by the Idaho State Department of Agriculture) names the regulated species. Canyon County also runs weed-control operations. Routine residential weed control, therefore, is driven mainly by Caldwell's nuisance code, while state-listed noxious weeds carry an additional mandatory control duty.