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Forestry

Routine Street Tree Pruning

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2017-18 street pruning map.jpgThis fall, the City of Ann Arbor will begin its first full scale street tree pruning program in 15 years, with funding from the Stormwater Utility.  

This map shows (PDF) the areas that will be part of this year's pruning program. Please note these areas are subject to change. Based on current resources, it will take approximately 10 years (PDF) to prune all City street trees. Pruning for Year 1 of the program will begin in late October 2017 and will be completed by end of June 2018.

Pruning will be done by trained professionals, in accordance with City specifications.  Most street trees have not been pruned in over 15 years; and some may require extensive pruning to ensure safety and the health of the tree.

City staff and the City's contractor, Davey Tree Expert Company, will make every effort to keep driveways clear and roads accessible during work. Streets will be posted "No Parking", when necessary.

What are the benefits of a routine street tree pruning?

Trees pruned on a routine basis develop proper form and structure leading to a variety of benefits, including:

  • Lower cost per tree trimmed compared to reactive pruning done in response to storm damage, sight clearance or immediate hazards
  • Healthier tree canopy as a result of removing dead, dying or diseased limbs, earlier identification and correction of insect/disease problems
  • Reduction in storm related tree damage
  • Better clearance and less obstructions in the public right-of-way as well as better sight lines for signs, signals and intersections
  • Lower future maintenance costs
  • Improvement of tree's structure to better withstand stresses from wind, ice and rain. 

Reminders

  • At this time, we are unable to provide a schedule of when a street will be pruned.
  • No requests will be accepted to exempt a street tree from the program.
  • Some tree species require pruning during the dormant season to prevent the spread of diseases. These tree species will be pruned first. Pruning crews will return to prune the remaining trees at a later date.   
  • Debris created during the pruning program will be removed.