505 ILCS 100/12
The cost of controlling and eradicating noxious weeds on all land, including highways, roadways, streets, alleys and rights-of-way, owned or controlled by a State department, agency, commission or board shall be paid by the State department, agency, commission or board in control thereof out of funds appropriated to its use.
The cost of controlling and eradicating noxious weeds on all land including highways, roadways, streets, alleys and rights-of-way, owned or controlled by a Control Authority shall be paid by the Control Authority in control thereof out of the Noxious Weed Control Fund, and until the establishment of such Fund, out of the general funds of such Control Authority. Until the establishment of the Noxious Weed Control Fund by a Control Authority, the cost of controlling and eradicating noxious weeds on all land, including highways, roadways, streets, alleys and rights-of-way, owned or controlled by a township or city or other municipal corporation shall be paid by the township or city or other municipal corporation in control thereof out of the general funds of such township or city or other municipal corporation. After the establishment of the Noxious Weed Control Fund of the county in which such township or city is located, such cost shall be paid from the Noxious Weed Control Fund of such county.
505 ILCS 100/12