"DO NOT SPRAY" signs  
The property owner is responsible to remove all noxious weeds, trees and brush from the county road right-of-way.  The property owner is not authorized to plant anything in the right-of-way.  The county will still mow the shoulder and may mow the entire right-of-way.  In these locations the county will avoid using herbicides.  Winona County has had this program since around 1995.
Download "DO NOT SPRAY" form