The owner of any premises abutting on any street of this city shall trim all trees and shrubbery growing in the parking, between the sidewalks and the roadway, of any such street, and all trees and shrubbery growing on any part of the premises adjacent to the sidewalks or any street or alley, in such manner that the boughs or limbs thereof shall not obstruct free and convenient passage and travel along the streets, sidewalks and alleys. When such premises is occupied by some person other than the owner, such occupant shall trim the trees and shrubbery in the same manner as hereinafter required of the owner. Such trees and shrubbery shall be trimmed so that the lowest branches or foliage shall not be lower than ten feet (10') above the roadway of a street or alley, nor lower than eight feet (8') above the sidewalk. (2000 Code § 14-101)