Invasive Plant Rules in Ada County, ID (2026)
1 county-level rule, plus city-specific rules for 1 city in Ada County, Idaho.
Verified from official government sources
Note: These county rules apply to unincorporated areas of Ada County. If you live within an incorporated city, that city's own rules apply: see the city list below.
Prohibited Species
Ada County makes it unlawful to knowingly keep a state-designated noxious weed on your land under Noxious Weed Control Ordinance section 5-8-3. The county doesn't publish its own species list: a plant is prohibited when Idaho's Department of Agriculture director designates it noxious, and the County Weed Superintendent enforces control.
Noxious Weed Species Rules in Ada County
Some RestrictionsAda County Code § 5-8-3; § 5-8-5
5-8-3: NOXIOUS WEEDS DECLARED UNLAWFUL: It is unlawful for any landowner to knowingly maintain noxious weeds on their land or property within Ada County. (Ord. 741, 1-19-2010) ... NOXIOUS WEED: Any plant having the potential to cause injury to public health, crops, livestock, land or other property; and which is designated as noxious by the director.
Invasive Plant Rules by City in Ada County
1 cities in Ada County have their own invasive plant rules rules. Each link goes to that city's dedicated page with code citations.
All Ada County ordinances
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Ada County Ordinance Hub →