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Emerald Ash Borer

Our Ash trees are under attack, and now is the time to come together to address this and future challenges. Participate in the mapping activities below to help our expert foresters understand what the status of Ash trees in Boulder is AND what our future urban forest will look like. By helping us know more about our urban forest today, you are helping to prevent future problems. So, thank you!


Be a part of the solution, below!


Our Ash trees are under attack, and now is the time to come together to address this and future challenges. Participate in the mapping activities below to help our expert foresters understand what the status of Ash trees in Boulder is AND what our future urban forest will look like. By helping us know more about our urban forest today, you are helping to prevent future problems. So, thank you!


Be a part of the solution, below!


Our Future Forest

6 months

Help us build a resilient Future Forest in Boulder by sharing which trees you have on your property.

The goal? To have less than 5% of each tree species in urban areas of Boulder County.

Why? A diverse urban forest is more resilient to pests.

What can I do? Glad you asked!

  1. Identify the family/species of trees on your property. Need help? Check out: What Tree Is That?
  2. Click "Go To Map" aboveĀ and drop a pin for each family/species of tree on your property. Hint: You can easily search for your address by clicking on the magnifying glass in the...Read more

Help us build a resilient Future Forest in Boulder by sharing which trees you have on your property.

The goal? To have less than 5% of each tree species in urban areas of Boulder County.

Why? A diverse urban forest is more resilient to pests.

What can I do? Glad you asked!

  1. Identify the family/species of trees on your property. Need help? Check out: What Tree Is That?
  2. Click "Go To Map" above and drop a pin for each family/species of tree on your property. Hint: You can easily search for your address by clicking on the magnifying glass in the top right hand corner of your screen.
  3. Plant a new species of tree on your property! Hint: Don't forget that our climate is warming, pick a tree species that will do well in our future climate.


Map Our Ash

6 months

Help Boulder understand the status of our Ash! Drop a pin to reflect the status on Ash trees on your property.

Need help identifying Ash trees on your property? Check out this handy guide from Michigan State University:


Help Boulder understand the status of our Ash! Drop a pin to reflect the status on Ash trees on your property.

Need help identifying Ash trees on your property? Check out this handy guide from Michigan State University: