Sustainability & Natural Resources

No Mow May

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Ann Arbor ​​​City Council unanimously approved Resolution R-22-094 - Resolution to Support The No Mow May Initiative, which encourages property owners to voluntarily refrain from mowing open spaces in May to help support survival of pollinators. No Mow May is supported by the volunteers on the A2 Pollinator Network, a workgroup of the Environmental Commission. ​​Ann Arbor's No Mow May follows the model established by Bee City USA​

The end of May is near. Are you ready to get your mowers running?
If you participated in No Mow May, please not that as of June 1, enforcement of city code that limits grass height to no greater than 12 inches will resume. A complaint about longer grass can result in a citation for violation of the code. Now that you have had May to view your yard in a different way, we want to be sure that you end with a positive outcome. 


Please be ready to take a break from your spring break, and prepare to cut the grass! Make sure that mower blades are sharp. Be prepared for a slower than usual process. You may need to use a weed whacker on tall grass first, followed by mowing at a high setting. As you resume cutting your grass, continue to support the environment by mulching your lawn clippings back into the lawn. There are numerous benefits of mulching lawn clippings - from providing nutrients for the soil and soil life, to saving a significant amount of having to bag the clippings for yard waste pick-up. Mulching your lawn clippings just makes sense!


Thank you for being a part of No Mow May. We hope you will join in again, and that you have considered adding a variety of native plants that flower throughout the season, to support pollinators. 

No Mow May strives to: 

  • ​Delay mowing of lawns through the month of May to allow emergence ​and maturation of pollinators that overwinter in grassy open spaces and below trees.
  • Increase available early season flowers that provide pollen and nectar for pollinators. 
  • Reduce emissions from fossil fuel-based lawn mowers. 
  • Reduce noise pollution from lawn mowers. 
  • Reduce compaction of soil from lawn mowers and allow greater infiltration of stormwater. 
  • Allow property owners some additional leisure time to consider expanding flower garden spaces to support pollinators, and to reduce turf grass. ​​

How to Participate

​​​Interested in participating in No Mow May? Register here​.  

Other ways to be involved include: 

  • ​Join iNaturalist ​and find out what other people are seeing in their yard during the month of May. 
  • ​Follow this Instagram page and post your No Mow May observations: #A2NoMowMay. 
  • Share this website and registration page with your friends!
  • Print and display this flier​ to let your friends and neighbors know you are participating in No Mow May. ​

Local Resources to Support Pollinators

  • Wildtype Nursery

Additional Information about Pollinators and our Food System and/or Articles of Interest​​

​​*The No Mow May initiative does not apply to violations of the ordinance that affects public safety under Ann Arbor City Code sections 3:15 and 3:16. Vegetation must be maintained to ensure an unaccompanied minor, a person in a wheelchair, and a person walking a bike can be adequately visible to a driver. Vegetation must not intrude on the right of way in such a manner as to create a hazard for pedestrians using the sidewalk.