Welcome to ISA Ontario


Ice-Covered Trees Hide Hazards Beyond the Obvious

In the months following December's rare winter storm, “homeowners and clean-up crews need to remember to be extremely careful when working around damaged and ice-covered trees,” cautions ISAO. Cautionary notes and homeowner tips...  Detailed pdfs on safety, tree assessment, pruning, future care and when to call for help are available here: Caring for ice-damaged trees & Caring for ice-damaged woodlots or plantations...

TRAQ Toronto & Ottawa Courses are FULL. Stay Tuned for More Course Dates.

LOOKING TO OBTAIN YOUR TREE RISK ASSESSMENT QUALIFICATION?. ISA’s new TRAQ program was launched Spring 2013, in Ontario, and has been incredibly popular. The two courses slated for Toronto in May, and one for Ottawa in June, are full.  Please contact us for further registration dates.  Email for details...

Just Trees, Naturally. Our Recent 65th Annual Conference & Trade Show in Huntsville Was Another Success!

ISAO'S 65TH ANNUAL EDUCATIONAL CONFERENCE & TRADE SHOW. February 12-14, 2014, Deerhurst Resort, Huntsville. Stay tuned to the next issue of the Ontario Arborist for coverage...

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

Apr 24
Registration is now open for the 11th Canadian Urban Forest Conference...
Apr 18
Fall Protection Products with Yoke Snaphooks
Apr 18
Competitive tree climber, Krista Strating, is comfortable being out on a limb...
Apr 09
FREE Advice clinic for property owners on 22 April, 6:30pm - 9:30pm