§ 19-103  SHADE TREES.
   All shade trees planted upon any street or avenue in the city shall be as follows, to-wit.  They shall be not less than one-inch in diameter and six feet in height, planted or set out in straight rows not more than 20 feet and not less than 12 feet apart, and shall be ten feet from the property line in the residence part of the city.
(`90 Code, § 19-58)