Grand Rapids, MI Tree Protection: Protected Tree Species (2026)

TREE, PROTECTED. Any tree having a diameter of six (6) inches DBH or larger or having an aggregate diameter of fifteen (15) inches DBH or greater.5.TREE AND ROOT PROTECTION PLAN. A written document included in construction plans and specifications that defines the protection perimeter and details measures designed to project and prevent damage to existing trees during all phases of the project.6.TREE PROTECTION ZONE (TPZ). The area surrounding a tree defined by a perimeter, in which excavation and other construction-related activities should be avoided.7.TREE PROTECTION ZONE BARRIERS. Devices such as fencing, berms, or signs installed to define and limit access to tree protection zones, or soil protection layers, as appropriate to accomplish the Tree and Root Protection Plan.8.TREE, UNHEALTHY. As determined by the City Forester, a tree demonstrating one (1) or more signs of decline, as indicated by severe insect or disease infestation, or with damage or structural defects that may include, but are not limited to: Severed or damaged roots within the critical root zone; signs of previous topping or other improper pruning practices; evidence of decay or structural defect; cracks, wounds, or cavities within the trunk or limbs; or any other defect that cannot be corrected through standard arboricultural practices. TRELLIS

An outdoor garden frame used to partition an area and/or as a support for vines or other climbing plants.

TWENTY-FOUR HOUR (24) OPERATIONS