Creates the Protecting Illinois Native Landscapes Act. Provides that a unit of local government may not enact or enforce an ordinance or resolution that prohibits or unreasonably restricts an owner, authorized agent, or authorized occupant of privately owned residential land or a premises from allowing Illinois native species to voluntarily grow within the landscape or to install and maintain Illinois native species within a managed native landscape. Provides that native landscaping that may not be prohibited includes small or large areas of native landscaping in the front, back, or side yard or in areas that do not fit a standard definition of yard, such as areas on farms, rural properties, corporate campuses, school campuses, and large estates. Excludes from the scope of the Act an ordinance or resolution of a unit of local government that prohibits plants, trees, or other landscaping from interfering with public transportation, vehicular traffic, or driveway or entrance road sight lines or from crossing sidewalks or property boundaries. Limits the concurrent exercise of home rule powers.