Injury to trees and shrubs is prohibited in that no person shall, without the consent of the owner in the case of a private tree or shrub, or without a written permit from the Mayor, in the case of a public tree or shrub, do, or cause to be done by others, any of the following acts:
(a) Secure, fasten or run any rope, wire, sign or other device or material to, around or through a tree or shrub;
(b) Break, injure, mutilate, deface, kill or destroy or permit any fire to burn where it will injure any tree or shrub;
(c) Permit any toxic chemical, gas, smoke, brine, oil or other injurious substance to seep, drain or to be emptied upon or about any tree or shrub;
(d) Excavate any ditch, tunnel or trench, or lay any drive within a radius of fifteen feet from any tree or shrub;
(e) Erect, alter, repair or raze any building or structure without placing suitable guards around all nearby trees or shrubs which may be injured or defaced;
(f) Remove any guard, stake or other device or material intended for the protection of any public tree or shrub or close or obstruct any open space about the base of a public tree or shrub designed to permit access of air, water and fertilizer.