735 ILCS 5/9-316
Every landlord shall have a lien upon the crops grown or growing upon the demised premises for the rent thereof, whether the same is payable wholly or in part in money or specific articles of property or products of the premises, or labor, and also for the faithful performance of the terms of the lease. Such lien shall continue for the period of 6 months after the expiration of the term for which the premises are demised, and may be enforced by distraint as provided in Part 3 of IX of this Act.
A good faith purchaser shall, however, take such crops free of any landlord's lien unless, within 6 months prior to the purchase, the landlord provides written notice of his lien to the purchaser by registered or certified mail. Such notice shall contain the names and addresses of the landlord and tenant, and clearly identify the leased property.
A landlord may require that, prior to his tenant's selling any crops grown on the demised premises, the tenant disclose the name of the person to whom the tenant intends to sell those crops. Where such a requirement has been imposed, the tenant shall not sell the crops to any person other than a person who has been disclosed to the landlord as a potential buyer of the crops.
A lien arising under this Section shall have priority over any agricultural lien as defined in, and over any security interest arising under, provisions of 9 of the Uniform Commercial Code.
735 ILCS 5/9-316