Welcome to ISA Ontario

CERTIFIED TREE WORKER EXAM scheduled for MONDAY, 16 APRIL 2018 in AURORA, ONTARIO has been rescheduled for MONDAY, 23 APRIL 2018 If you think you might be interested in TAKING THIS EXAM, please register directly with ISA International! Click HERE to find out more information OR contact ISA directly at: 217-355-9411.   Enrollment Deadline: March 28, 2018

REGISTRATION IS OPEN FOR DR. ED GILMAN'S WORKSHOPS. 
Guelph Arboretum will host on ROOTS and OTTAWA will host PRUNING.  SIGN UP TODAY!
  Our GUELPH WORKSHOP IS FULL.  OTTAWA IS FULL...REGISTRATION CLOSES WEDNESDAY 18 APRIL.  NO ONSITE REGISTRATIONS.   Click HERE for more information...

Warren Buffett
Someone's sitting in the shade today because someone planted a tree a long time ago. "Warren Buffett"

Our mission is to enhance and promote the care and benefit of trees for present and future generations in Ontario through education, research and awareness.

News & Events

Mar 15
If you are an arborist or own a tree or arboricultural company, you will soon be required to obtain a licence, in Oakville.
Mar 06
ISA new website is live!
Mar 06
Results from the 2017 Municipality Tree Demand Survey
Feb 07
Early release of the Annual Meeting of Members (AMM) Booklet for Members

Connect With Us