The city shall have the right to plant, prune, maintain and remove trees, plants and shrubs within the lines of all streets, alleys, avenues, lanes, squares and public grounds, as may be necessary to insure safety when servicing city utilities or to preserve the symmetry and beauty of public grounds.  The city may remove or cause or order to be removed, any tree or part thereof which is in an unsafe condition or which by reason of its nature is injurious to sewers, electric power lines, gas lines, water lines or other public improvements, or is affected with any injurious fungus, insect or other pest. 

(Code 2007)

The city shall have the authority to treat or to remove any tree, or to remove any dead tree as mentioned herein, which is located within the limits of any public right-of-way within the city.  The adjacent property owners shall not be responsible for the cost of treatment or removal of any such trees within the public right-of-way and this expense shall be borne by the city at large. 

(Code 2007)