Certification. Upon certification by the City Zoning Officer that one or more trees located on lands in the City, either public or private, is diseased or harboring destructive insects and should be destroyed because of danger of further infection or infestation of additional trees upon same or adjoining lands, the City Zoning Officer may, with or without the consent of the owner of the lands involved if private, order the destruction and/or removal of said trees, provided the lands involved are restored to their original condition using nursery stock that has been set aside by the tree banking program.