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Rock County, WI Fire Regulations: Brush Clearance (2026)

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

Key Facts

Weed law
Wis. Stat. 66.0407
Landowner duty
Destroy all noxious weeds
Listed weeds
Canada thistle, leafy spurge, bindweed
Wildfire clearance
No state defensible-space mandate
Enforcer
Town weed commissioner

Summary

Wisconsin has no defensible-space wildfire law, but Wis. Stat. 66.0407 requires every landowner to destroy noxious weeds (Canada thistle, leafy spurge, field bindweed and locally designated weeds) on their land. Removal by open burning must still follow DNR NR 429 rules.

These county ordinances apply to unincorporated areas of Rock County. Incorporated cities within the county may have their own rules that take precedence over county-level regulations.

A person owning, occupying or controlling land shall destroy all noxious weeds on the land. The person having immediate charge of any public lands shall destroy all noxious weeds on the lands.

Full Breakdown

Unlike western states, Wisconsin does not mandate wildfire brush-clearance zones. The controlling vegetation rule is Wis. Stat. 66.0407, which makes each person owning, occupying or controlling land destroy all noxious weeds on it. Noxious weeds include Canada thistle, leafy spurge, field bindweed, any weed the DNR designates by rule, and any weed a municipality or county board declares noxious. Towns appoint weed commissioners who may order abatement. Rock County's Land Conservation Division administers related erosion-control and land-management ordinances. If you clear brush by burning, you must still obtain any required burn permit and follow DNR open-burning limits.

Violations & Fines

Weed commissioners may destroy noxious weeds not abated by the owner and assess the cost to the property (often as a tax lien). Fines are set by local weed ordinances.

Frequently Asked Questions

Am I required to clear brush for wildfire safety?
Wisconsin has no defensible-space law. You must, however, destroy noxious weeds like Canada thistle and leafy spurge on your land under Wis. Stat. 66.0407.
What happens if I ignore a weed notice?
The town weed commissioner can destroy the weeds and charge the cost back to the property, typically added to your tax bill.

Sources & Official References

Other rules in Rock County

All Rock County rules

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