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Utah County, UT Invasive Plant Rules: Prohibited Species (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Authority
County Commission can designate local noxious weeds
Board
5-member Weed Control Board, 2+ farmers/ranchers
Annual notice
Posted and published before May 1 each year
Noncompliance window
5 working days before County can act
Cost recovery
Unpaid bill becomes a property tax lien
Appeal
10 days to Board, then 10 days to Commission

Summary

Utah County can declare a plant a County noxious weed even if it is not on the state's list, and can force any property owner to control or destroy it. Utah County Code § 7.11.060 lets the County Commission designate a County noxious weed, and § 7.11.100 lets the Weed Control Board order an owner to remove it or face a public nuisance charge.

City-specific rules exist: Eagle Mountain, and Lehi have their own prohibited species rules that differ from Utah County's county-level regulations. If you live in one of those cities, check the city-specific page instead.

The County Commission may declare a particular weed or competitive plant, not appearing on the state noxious weed list, a County noxious weed within the County. ... If the Utah County Weed Control Board determines that a particular property within the county requires prompt and definite attention to prevent or control noxious weeds, the board shall serve the owner or the person in possession of the property, personally or by certified mail, a notice specifying when and what action is required to be taken on the property. ... An owner or person in possession of property who fails to take action to control or prevent the spread of noxious weeds as specified in the notice is maintaining a public nuisance.

Full Breakdown

11, "Utah County Weed Control," carries out the state's Utah Noxious Weed Act locally. 060, after a duly noticed public hearing if the County later wants that weed removed from the state list. 070 to detect, treat, and investigate violations. 090 requires the board to post and publish a general notice of the County's noxious weeds. 110 then lets the County enter the property after five working days of noncompliance, perform the weed control itself, and bill the owner, who has 90 days to pay before the charge becomes a property tax lien collectible by the County Treasurer.

120 gives an owner 10 days to appeal a violation notice to the Weed Control Board, then another 10 days to appeal that decision to the County Commission, and finally to court.

Violations & Fines

Ignoring a weed-control notice under § 7.11.100 makes the property owner "maintaining a public nuisance," and § 7.11.110 lets the County enter the land after five working days, do the weed work itself, and bill the owner. An unpaid bill becomes a lien collectible with property taxes if not paid within 90 days of the demand under § 7.11.110.

Frequently Asked Questions

Can Utah County make me remove a weed that's not on the state noxious weed list?
Yes. Section 7.11.060 lets the County Commission declare a plant a "County noxious weed" if it is especially troublesome locally, even when it never appears on the state's noxious weed list, and the same control duties then apply to it under Chapter 7.11.
What happens if I ignore a notice to control weeds on my land?
Section 7.11.100 treats ignoring the notice as "maintaining a public nuisance," and § 7.11.110 lets the County enter the property after five working days, perform the weed control itself, and send the owner a bill for the cost.
What if I can't pay the County's weed-removal bill?
Section 7.11.110 gives the owner 90 days to pay after the demand. If the bill still goes unpaid, it becomes a lien against the property that the County Treasurer collects alongside the regular property tax bill.
Can I appeal a noxious weed violation notice?
Yes. Section 7.11.120 gives the owner 10 days to request a hearing before the Utah County Weed Control Board, another 10 days to appeal that decision to the County Commission, and the right to further appeal the Commission's decision to a court.

Sources & Official References

Other rules in Utah County

All Utah County rules

Compare Utah County to another location·View the Utah invasive plant rules overview

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