Can I post signs; hang banners, ribbons, etc. in the parks?

Per CO 907.06: “Unless specifically authorized by the city manager, no person shall intentionally damage, cut, carve, transplant or remove any public tree or shrub; attach any rope, wire, nails, advertising posters or other contrivance to any tree or shrub, allow any gaseous liquid, or solid substance which is harmful to such trees or shrubs to come in contact with them; or set fire or permit fire to burn when such fire or the heat thereof will injure any portion of any public tree or shrub.” The Park & Forestry crew routinely removes such items during regular maintenance, mowing, and trash removal. Items removed also include abandoned chairs, athletic equipment, water bottles, bikes, and other items left in city parks. If the items removed have obvious value, they are retained are the Public Service Center for 30 days and can be retrieved during normal business hours.