36 Pa. Stat. § 461
The Department of Highways may cause grasses, shrubs, and vines to be planted and maintained along State highways, the same to be paid for as a part of the cost of construction or maintenance of the road, and may enter into agreements with the Department of Forests and Waters regarding the planting and maintenance of such; and it shall be unlawful for any person or persons, firm or corporation, to cut, trim, remove, or otherwise damage any grasses, shrubs, or vines growing within the limits of a State highway, and which have been heretofore or shall hereafter be planted by any person or agency other than the abutting property owner, and without first having obtained the consent of the Secretary of Highways in writing, and any person or persons, firm or corporation who shall cut, trim, remove, or otherwise damage such grasses, shrubs, or vines without first having obtained such written consent, shall be subject to a fine of not less than twenty-five dollars ($25.00), or more than one hundred dollars ($100.00), for each and every act of cutting, trimming, removal, or damaging: Provided, however, That this act shall not be construed to permit the department to interfere with the right of any abutting property owner to establish entrances to his property from State highways at any point or points at which such owner may desire to establish such entrances.
36 P.S. § 461