58 Pa. Code § 53.3
(b) It is unlawful to remove or deface a sign, poster or property; to damage lands, fixtures, devices or structures; or to interfere with the flow of water over or through a structure owned, leased or controlled by the Commission.
<>(c) It is unlawful for a person to remove flowers, plants, shrubs or trees on Commission-owned or -controlled property except in compliance with a permit issued by the Executive Director.