It shall be unlawful for any person owning real estate within the city to permit any tree growing along and/or on said real estate to hang over or branch in such a manner as to obstruct the sidewalks, streets or obscure street lamps, traffic signals or signs. All such trees shall be kept trimmed by the owner so that limbs shall not be closer than nine (9) feet above the sidewalk and fifteen (15) feet above any street or alley. Any such tree in violation of this section shall be removed or trimmed by the owner as hereinafter directed. In all cases where any tree is required to be removed or trimmed, the city shall notify the owner in writing to remove or trim such tree within five (5) days after mailing of such notice to the owner at his address as listed on the assessment records. Failure to remove or trim the tree as directed within the time allowed shall constitute a municipal infraction. It shall thereafter be lawful for the city to remove or trim such tree and bill the reasonable costs thereof to said owner. The penalty for violation of this section shall be a fine in an amount not to exceed one hundred dollars ($100.00). (Code 1953, § 18.11; Ord. No. G-80-35, § 1, 8-21-80; Ord. No. G-84-2, § 1, 2-2-84; Ord. No. G-96-37, § 1, 8-15-96)