The owner or agent of any lot or parcel of land fronting on any street, avenue or public ground in the City, in which shade trees are planted and growing, shall trim or cause to be trimmed, the branches from the trees in or in front of their respective lots or lands, near which any street lamp is placed, so as not to obstruct the passage of light from such lamp to the street or sidewalk adjacent, and shall trim all branches overhanging any sidewalk or roadway, so as to have a clear height of eight (8) feet above the surface of the sidewalk, and a clear height of ten (10) feet above the surface of the roadway, unobstructed by branches, and shall remove from the trees all dead, decaying and broken limbs or branches that overhang the sidewalk or street, or are liable to fall thereon. When any trees are dead the owner thereof shall take up, or cause to be taken up, the dead trees and remove the same from the lot or parcel of land. If any owner or agent of any lot or land in which shade trees are planted fails or refuses to comply with the requirements of this section, after being duly notified to do so, the Shade Tree Commissioner shall cause the same to be done at the expense of the owner of the property in or in front of which the trees may be located, which expense, together with the cost of suit, may be collected by a suit in Municipal Court.