The Director shall have the right and duty to trim any tree existing on any public place in this City, so as to insure the public safety or to preserve the function or beauty of such public place. He shall further have the right to remove any such tree, or any part thereof, which is in an unsafe condition or which, by reason of its location or nature, is injurious or detrimental to other public improvements in this City or is infected with any injury, fungus, insect, or other pest or disease which cannot otherwise be controlled. (Ord. 67-58. Passed 4-28-58.)