It shall be the duty of any person growing a tree within a public highway or responsible for trees growing on property abutting on public places supporting trees or plants to:
(a) Trim his trees so as not to cause a hazard to public places or interfere with the proper lighting of public highways by the street lights, and so that the minimum clearance of any overhanging portion thereof shall be nine feet over footways and thirteen feet over vehicular ways.
(b) Treat or remove any tree or plant so diseased or insect-ridden as to constitute a hazard to trees or plants in public places.
(c) Remove and refrain from planting any of the species mentioned in Section 905.06.