Bonneville County, ID Invasive Plant Rules: Prohibited Species (2026)
Key Facts
- Basis
- Idaho Code Title 22, Chapter 24 incorporated
- Height trigger
- None; regulated regardless of height
- Local list
- Non-inclusive list attached as Exhibit A
- Enforcer
- County Weed Control Supervisor
- Penalty
- Misdemeanor; lien if county abates
- Adopted
- Ordinance 163-94, passed 5-4-1994
Summary
Bonneville County Code § 91.01 declares NOXIOUS WEEDS, as listed under Idaho Code Title 22, Chapter 24, to be offensive plants regardless of height, and incorporates the state noxious-weed law into the county code. Property owners may not let these species grow anywhere in the county.
NOXIOUS WEEDS are declared to be offensive plants regardless of their height. NOXIOUS WEEDS shall include, but not be limited to, all noxious weeds described as part of Idaho Code Title 22, Chapter 24, and by this reference, all provisions of the aforementioned Code are hereby affirmed and made a part of this subchapter.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: 2026 S-1: Ordinance 280-26, passed 1-20-2026).
Full Breakdown
01 defines two categories of regulated vegetation. Ordinary 'weeds and offensive plants' are any plants over ten inches tall growing in open spaces on county land, except food, ornamental or fuel crops. NOXIOUS WEEDS are treated differently: the code declares them 'offensive plants regardless of their height' and states that noxious weeds 'shall include, but not be limited to, all noxious weeds described as part of Idaho Code Title 22, Chapter 24,' expressly making every provision of that state chapter part of the county subchapter by reference.
A non-inclusive list of the county's noxious species is attached to the underlying ordinance as Exhibit A. 09: the County Weed Control Supervisor issues an abatement notice, unresolved violations can be cited to magistrate court, and uncorrected infestations can be cleared at county expense with the cost placed as a lien on the property. The underlying ordinance, 163-94, was passed May 4, 1994, and remains the operative source of the county's noxious-weed definition today.
Violations & Fines
Allowing a noxious weed species to grow is a public nuisance under § 91.02 and a misdemeanor under §§ 91.01-91.09, per § 91.99(B), punished as state law provides for misdemeanors. Each ten-day period the infestation continues after a citation or abatement notice is a separate offense, and the county can abate the noxious growth itself and lien the property for the cost.
Frequently Asked Questions
Does Bonneville County have its own noxious weed list?
Why are noxious weeds regulated no matter how short they are?
What happens if I refuse to remove noxious weeds from my land?
Sources & Official References
Other rules in Bonneville County
Compare Bonneville County to another location·View the Idaho invasive plant rules overview
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