Know your trees
Start with an accurate tree identification and a site assessment. This independent guide explains planning questions and links to the authorities behind local safety and permit guidance. It does not diagnose trees or provide a professional inspection.
Maples (sugar, silver, Norway)
Identify the species before deciding what care it needs. Pruning timing and the amount of live growth removed should be chosen for the individual tree, not its name alone.
Oaks (red, white, bur)
Michigan DNR advises against pruning oaks April 15 through July 15 and recommends winter pruning. Grand Rapids Forestry gives more cautious local advice: wait until late October. For planned work in Grand Rapids, choose winter and confirm the timing with an arborist. Accidental oak wounds during the high-risk period need prompt professional advice; painting a wound is not permission for routine summer pruning.
White pine
Confirm the species with an arborist before work. A tree near buildings, wires or public space needs a site assessment regardless of whether it is evergreen or deciduous.
Ash (green, white)
Michigan reports tens of millions of ash trees killed statewide by emerald ash borer since its discovery in 2002. A qualified arborist can assess a declining ash and discuss next steps.
Spruce (Colorado blue, Norway)
A thinning crown can have several causes. Do not diagnose disease or prescribe removal from appearance alone; ask an arborist to inspect the tree.
Crabapple & ornamental cherry
For flowering trees, pruning timing can affect flowering. MSU Extension advises matching pruning to the growth and flowering habit of the plant.
The Grand Rapids tree-care calendar
Dormant season
Winter is the DNR-recommended pruning season for oaks. For other trees, discuss species and condition with an arborist before setting a date.
Spring growth
Michigan DNR advises against pruning oaks April 15 through July 15 and recommends winter pruning. Grand Rapids Forestry gives more cautious local advice: wait until late October. For planned work in Grand Rapids, choose winter and confirm the timing with an arborist. Accidental oak wounds during the high-risk period need prompt professional advice; painting a wound is not permission for routine summer pruning.
Summer storms
After a storm, inspect only from a safe distance. Do not approach hanging branches or downed lines. Planned oak pruning should follow the cautious local timing above.
Fall assessment
Use this time to arrange an assessment and plan winter work. Grand Rapids Forestry advises waiting until late October before pruning oaks.
Rules worth knowing
Street trees belong to the city
Trees in the strip between sidewalk and curb are typically in the public right-of-way and managed by the City of Grand Rapids. Work on them, including pruning and removal, requires a city permit. When in doubt about a tree's location, the city can confirm whether it is public or private.
Check rules for the actual property
Grand Rapids Forestry requires a permit for a private company to remove or prune a qualifying city right-of-way tree. Do not prune a city tree yourself. For a tree on private land, confirm the property boundary and check with the city or township about the specific project, including development, wetland and soil-erosion rules. This guide cannot determine permit requirements for an address.
Call 811 before anything goes underground
Before excavation, coordinate MISS DIG with the excavator. Michigan MPSC requires notice at least three business days ahead, plus the required responses and safe-digging steps.
Hiring well when certification is voluntary
ISA certification is voluntary. It demonstrates tested arboricultural knowledge but does not settle licensing or permit requirements for a particular job. Check credentials, insurance and a written scope before hiring.
- Insurance, verified. Ask for certificates of liability insurance and workers' compensation, not just a verbal "fully insured".
- Credentials. An ISA Certified Arborist on staff signals training, even on a crew where not everyone is certified.
- A written, specific quote. "Remove tree" is not a scope. Removal, stump depth, debris handling and lawn protection should each be named.
- No topping, no spikes on keepers, no pressure. Door-knockers after storms who demand cash today are a pattern, not a bargain.
Sources: City of Grand Rapids tree permit · Michigan DNR oak-wilt advisory · Michigan.gov on emerald ash borer · MSU-hosted MISIN emerald ash borer guide · Michigan MPSC on the MISS DIG law · Michigan EGLE soil-erosion permits · ISA Michigan on certification