No person shall attach any wire or rope to any tree on public property without the permission of the Board of Trustees. Any person granted the right to maintain poles and wires in the streets, alleys or other public places in the Village shall, in the absence of provision in the franchise concerning the subject, keep such wires and poles free from and away from any trees or shrubs in such places so far as may be possible and shall keep all such trees and shrubs properly trimmed, subject to the supervision of the Building Commissioner, to ensure that injury shall not be done to the poles, wires, shrubs and trees by contact with the wires. (1975 Code § 5.14)