No person shall place or maintain upon the ground in any public way or place of the city any stone, brick, sand, concrete or other material or article which may injure or in any way impede the full and free passage of water, air or fertilizer to the roots of any tree, shrub, vine or plant, without leaving an open space of ground not less than four feet in diameter around the same.
(`73 Code, 30.109, § 4.99)  (Am. Ord. passed 8-24-99)  Penalty see § 10.99