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Using the MyTreeKeeper Interactive Map, you can identify all of the trees (ash trees and otherwise) on your property and in the adjacent public rights-of-way. Is there an ash tree on your property OR adjacent to it in the public right-of-way? Please Be a Smart Ash and begin getting a plan in place NOW. (NOTE: Permits are required prior to the removal or planting of any right-of-way trees. Permits can be requested by sending an email to


To identify your trees using the MyTreeKeeper Interactive Map, simply:

  1. Enter your address in the search bar in the upper left-hand portion of the screen
  2. Click the Picture1 “Filters” button in the upper right-hand portion of the map. The “Filters” menu will open to the right of the icon.
  3. From that menu, click the ash-leaf-my-tree-keeper “Ash trees” button to illuminate ash trees on your property or adjacent to it in the public right-of-way. (NOTE: Please be patient while MyTreeKeeper illuminates these ash trees. It may take up to 1 minute to load.)
  4. Click on the tree icons on and around your property to identify the tree type (NOTE: All ash trees will be illuminated in yellow)
  5. For a guide to all the icons on the map, click the Picture2 “Legends” button located on the same menu where you found the “Filters” button.


  • Because of the massive amount of data collected by the Office of the City Forester and included in this map, there may be some delays while it loads. Thanks in advance for your patience.
  • MyTreeKeeper is best used on a desktop. It may not function on some mobile devices.
  • Tree inventory is still underway in Southeast Denver, so some data may not currently be available.


Your friendly City Forester has mapped each and every one of the public ash trees in Denver. Feel like you missed out on the fun? Well you’re in luck! Now you can join the tree mapping party thanks to an app called Curio.

In many ways, Curio serves as a social network for trees. It gives their human companions the ability to tag a tree on an interactive map, add stories, photos and data about a favorite tree, search for trees within the app and even add tree-based missions for you and your friends to conquer.

Not only are they a lot of fun, apps like Curio also allow us to protect our urban tree canopies through the sharing of valuable data. Be A Smart Ash, and get in on the act!