Author: Sonya Wieler


Explore the Outdoors with our Spring Discovery Walk!

Take a walk outdoors this spring with ACER’s Spring Discovery Walk as your guide!  For our full Exploring the Outdoors collection, click here! Includes two new additions to our tree, shrub and flower activity suites: tulip and crab apple!


Reminder: Upcoming “Get Tech Savvy” Webinar!

Join us Sunday Feb. 25 from 1:30-2:30 PM for our “Get Tech Savvy” online webinar brought to you by our Seniors Measure UP Program. Sign up to learn some tips from an expert on how to use your Apple iPhone and iPad efficiently like a pro! All are welcome to attend.


ACER Newsletter – Fall/Winter 2023

We are happy to announce that our newsletter is back! 2023 was a very productive year for ACER, and also a year of celebration of ACER’s 35th anniversary! To look inside, check it out here!


Announcing our New Seniors Measure UP Webinar Series!

Join us this February and March for a special live webinar series designed especially for seniors as part of our Seniors Measure UP program, funded by the New Horizons for Seniors Program (Government of Canada). See below for details! All are welcome to attend. If you are interested please fill


A Tree Planted for Alice

After 35 years of planting trees with schools and communities across Ontario, ACER founder and President Alice Casselman was celebrated this past August with a maple tree planted in her honour at Mississauga’s Fleetwood Park. At the ceremony, Mississauga City Councillors Stephen Dasko (Ward 1) and Chris Fonseca (Ward 3)


The Do’s and Don’ts of Tree Mulching

November 2023 – Winter is fast approaching and replenishing the mulch around our trees ahead of winter is good practice,  to ensure its continuing benefits. Mulching adds nutrition to the soil, helps aerate it, regulates its temperature, holds in moisture, and suppresses weed growth. And, when added in the autumn,


ACER AGM 2023 – Livestream

AGM 2023 Livestream Find out more about ACER’s successes in 2022 and the exciting plans for 2023! Click below to view our live-streamed presentation that kicked-off the 2023 Annual General Meeting on Sunday June 11.


ACER Newsletter – Fall/Winter 2022

Well, we made it through another amazing year despite the persistence of COVID-19! Under the pandemic’s radar, ACER managed to plant P4C tree suites in three schoolyards; complete our federally funded Canadian Healthy Communities Initiative project in Mississauga and launch our newest Riparian Rangers initiative in the Ganaraska River watershed,


ACER Awarded Great Lakes Local Action Fund Grant – November 2022

November, 2022: ACER is excited to announce our latest Riparian Rangers initiative in the Ganaraska region funded by the Great Lakes Local Action Fund, kicked off on November 12 at the Sylvan Glen Conservation Area east of Toronto. During this one-year initiative ACER will take the lead working with the Ganaraska


Celebrating 1000 trees planted in Mississauga! Fleetwood Park, Oct. 15, 2022

On October 15, 2022, ACER celebrated 1000 trees planted in Mississauga Wards 1, 3 and 7, in collaboration with communities and the City of Mississauga, funded by the Canada Healthy Communities Initiative. Left to right in the photo:Chris Fonseca, Ward 3 CouncillorStephen Dasko, Ward 1 CouncillorAlice Casselman, ACER FounderLinda Casselman,



ABSOLUTELY BREATHTAKING! HOW IS THIS POSSIBLE? IN THE BEGINNING … there were green leaves ! What makes a leaf green? Chlorophyll, of course, but there are other colours hidden all year! Chlorophyll is PACKAGED in chloroplasts each cell in each green leaf!  See them in this magnified image. The leaves