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Wisconsin Statewide Rule

Wisconsin Noxious Weed Destruction Statute

Some RestrictionsApplies statewide across Wisconsin (2026)

Key Facts

Statute
Wis. Stat. 66.0407
Applies To
All Wisconsin land
Core Weeds
Thistle, spurge, bindweed
Enforcement
Town weed commissioner
Cost Recovery
Special property tax
Last verified: August 20, 2026Source: Wisconsin State Legislature

Summary

Wisconsin Statute 66.0407 universally requires every property owner to destroy noxious weeds, including Canada thistle, leafy spurge, and field bindweed, on their land. Municipalities may add additional weeds by ordinance, but the destruction duty applies statewide.

66.0407 66.0407 Noxious weeds. 66.0407(1) (1) In this section: 66.0407(1)(a) (a) “Destroy” means the complete killing of weeds or the killing of weed plants above the surface of the ground by the use of chemicals, cutting, tillage, cropping system, pasturing livestock, or any or all of these in effective combination, at a time and in a manner as will effectually prevent the weed plants from maturing to the bloom or flower stage. 66.0407(1)(b) (b) “Noxious weed” means Canada thistle, leafy spurge, field bindweed, any weed designated as a noxious weed by the department of natural resources by rule, and any other weed the governing body of any municipality or the county board of any county by ordinance or resolution declares to be noxious within its respective boundaries. 66.0407(3) (3) 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. The highway patrolman on all federal, state or county trunk highways shall destroy all noxious weeds on that portion of the highway which that highway patrolman patrols. The town board is responsible for the destruction of all noxious weeds on the town highways. 66.0407(4) (4) The chairperson of each town, the president of each village and the mayor or manager of each city may annually on or before May 15 publish a class 2 notice, under ch.

Source: Wisconsin State LegislatureView official code

Full Breakdown

Under Wis. Stat. 66.0407, all landowners must destroy noxious weeds growing on their property each year. The statute defines noxious weeds as Canada thistle, leafy spurge, field bindweed (creeping jenny), weeds designated by the Department of Natural Resources, and any others a municipality or county declares noxious by ordinance. Town boards designate weed commissioners who may enter property to destroy weeds when owners fail to comply. Costs of destruction are charged back to the landowner as a special tax. Highway patrolmen handle weeds in highway rights-of-way. The duty applies uniformly to all Wisconsin property regardless of municipality.

Violations & Penalties

Failure to destroy noxious weeds allows the weed commissioner to enter property, destroy them, and charge costs (typically $50-$300+) to the owner as a property tax assessment.

Frequently Asked Questions

Which weeds must I destroy under Wisconsin law?
Canada thistle, leafy spurge, and field bindweed are designated statewide. Your municipality or county may add additional weeds by ordinance, and the DNR may designate others.
What happens if I do not destroy noxious weeds?
The local weed commissioner may enter your property, destroy the weeds, and bill the cost back to you as a special charge added to your property tax bill.
Are there any exemptions to the weed destruction rule?
Canada thistle and annual noxious weeds on DNR land maintained as habitat for wild birds are exempt. Otherwise, the duty applies to all property owners.

Sources

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