OUR MISSION: ACER supports communities, government agencies and corporations in taking action to reduce biodiversity loss and strengthen climate resilience by increasing and monitoring urban and riparian zone forest canopy.

Helping communities take action to fight global climate change and strengthen climate resilience
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Calling all retired teachers! Join us on Tuesday, October 22 at Centennial Park in Etobicoke for our first RTOERO Measures UP! event, sponsored by RTOERO District 22 and in partnership with the TRCA! Get outdoors with fellow colleagues and friends to help us mulch, measure and maintain!
 
Check out our new Trees & Biodiversity Quiz, the latest addition to our TREEVIA quiz series!
 
Introducing the newest addition to our TREEVIA quiz series!

Hot off the presses: our updated Fall Discovery Walk!

Sept. 24, 2024. Happy Fall from ACER! If you love to get outdoors to enjoy and explore the beauty of autumn, our recently updated Fall Discovery Walk might pique your interest! Discover why leaves change colour, uncover the science behind fall aromas, test your skills in identifying fall trees and flowers, and more! We’ve also released a brand new Summer Discovery Walk—perfect for those

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Come Join ACER in the Great Pawpaw Parade this September!

October is Pawpaw Month, a time to celebrate the beautiful but rare pawpaw tree! This unique tree, native to Southwestern Ontario, bears the largest native fruit in North America, fruit that is edible with a custard-like texture and flavour tones of mango, banana and melon! To help kick off the celebration of the pawpaw tree, the Carolinian Canada Coalition, in partnership with various host

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