Illinois Weed Ordinances Law: Statewide Landscaping Rules Rules (2026)

Key Facts

Statute: 505 ILCS 100
Exotic Weeds: 525 ILCS 10
Enforcement: County weed commissioner
Cost Recovery: Property lien

Full Breakdown

The Illinois Noxious Weed Law (505 ILCS 100) directs the Department of Agriculture to designate noxious weeds such as Canada thistle, musk thistle, and perennial sow thistle. Every landowner, including municipalities, must control designated weeds on their property. County weed commissioners may enter property to inspect and order eradication. The Exotic Weed Act (525 ILCS 10) similarly bans sale and propagation of listed invasive species statewide.

Violations & Penalties

Noncompliance is a petty offense; the county may eradicate weeds and assess costs as a property lien under 505 ILCS 100/8.

Frequently Asked Questions

Which weeds must Illinois landowners control?

Designated noxious weeds include Canada thistle, musk thistle, perennial sow thistle, and others listed in 8 Ill. Adm. Code 220 by the Department of Agriculture.

Can the county enter my property to remove weeds?

Yes. County weed commissioners may inspect property, order eradication, and if owners refuse, perform the work and assess costs as a lien on the property.

Illinois Noxious Weed Law Mandates Statewide Weed Control

Key Facts

Full Breakdown

Violations & Penalties

Frequently Asked Questions

Sources

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