What are the opening hours?

Monday 9am - 4pm Tuesday 9am - 4pm Wednesday 9am - 4pm Thursday 9am - 4pm Friday 9am - 4pm

ISA Ontario

Home
Canada
Milton, ON
ISA Ontario

Call Directions Website Contact the organization

The mission of the ISAO is to enhance and promote the care and benefit of trees for present & future generations through education, research & awareness.

The ISAO is a membership association of dedicated tree care professionals or professional arborists. We promote research, technology and education to advance best tree care practices and provide opportunities for our members to develop their knowledge, skills and arboricultural expertise. By hiring an ISAO certified arborist, you can be assured you are hiring a professional arborist who values safety, education, quality, good work/management practices - all things that are the foundation of the ISA and over 30,000 members in 29 countries, worldwide.

10/15/2026

Working in the canopy is dangerous enough, but adding power lines into the mix raises the stakes to a whole new level. Electrical hazards are one of the leading causes of serious injury in our industry.

Let’s make sure every climber goes home at the end of the day.

Visit ISA Ontario's safety resource page here for links to electrical safety and many other workplace hazards:
https://www.isaontario.com/safetyresources/

10/13/2026

🏆 Exciting News! Nominations are NOW OPEN! 🏆
Who will you nominate for the ISA Ontario Awards of Distinction? 🤔

These awards play a significant role in the way the ISA Ontario recognizes individuals and organizations that are making significant contributions to the Arboriculture Industry here in Ontario. They celebrate the dedication, hard work, and commitment of those who are shaping the future of our industry. By nominating a deserving candidate, you'll be helping to highlight their outstanding achievements and inspire others to strive for excellence.

For award information, descriptions, and nomination forms, visit: https://www.isaontario.com/awards/ and get ready to recognize the best of the best in our industry! 🌟

10/12/2026

Good food, great company, and deep gratitude for all of you who support ISA Ontario every single day.
Happy Turkey Day! 🥧

10/08/2026

Advance your arborist skills at Turf & Rec’s FREE three-part online event, designed for professionals in tree care and urban forestry.

📣 Julie Tucker - Executive Director of ISA Ontario
📣 Peter Dewey - Grand River Conservation Authority
📣 Michael Yost - University of Guelph

October 14, 2026 @ 1:00 pm (ONLINE)
Register and secure your spot - FREE Registration
Earn up to 3 CEUs

https://webinars.annexbusinessmedia.com/webinar/arborist-summit/

10/05/2026

We're Going to Vertical Expo!
Stop by and see us at the ISA Ontario booth. Let's get the conversation started!

When: October 7–8, 2026
Where: Liftwerxs Hamilton Building - 243 Queen St N, Hamilton, ON

Get your tickets here: https://www.mapleleafropes.com/events/maple-leaf-ropes-vertical-expo-2026

10/02/2026

ISA Ontario's Bookstore in Milton has a wide selection of books to purchase. Looking for something specific? Contact the office at [email protected] to purchase and have it shipped!

Don't forget you can shop in-person at any of our ISAO events throughout the year.

09/28/2026

ENROLL NOW!
We’ll be hosting exams for the: ISA Certified Arborist, Utility Specialist, Certified Urban Forest Professional (Municipal Specialist) and Tree Climber Exam (both Written & Skills) on Friday Nov 06, 2026 in Whitby, Ontario.

It can take ISA 1-2 weeks or more to approve an application – so plan to submit your application at least 2 weeks before the enrollment deadline of October 15, 2026.

Enroll through your ISA account (LINK IN OUR BIO): https://wwv.isa-arbor.com/myAccount/login

To be eligible to write the exam you must meet the eligibility requirements (generally a certain # years work experience), submit an application and be approved by ISA International.

09/24/2026

Through the Arborist Ground Worker Training Program, ISA Ontario (ISAO) and the Ontario Commercial Arborist Association (OCAA) are looking for Curriculum Developers to help develop two NEW Upskill Training courses!

We’re seeking skilled, organized individuals with experience in curriculum development, training, or adult education to lead the development of two new workshops for incumbent workers in the arboriculture industry. Knowledge or experience in areas of focus is an asset.

🌱 ISAO Workshop: Focus on Root Management - 2 positions

🐛 OCAA Workshop: Focus on Control Methods for Tree Pests - 2 positions

If you’re passionate about training, arboriculture, and supporting the arboriculture industry, this could be the opportunity for you!

Application deadline: October 9th, 2026

📌 Learn more & apply by visiting the ISAO Job Board (link in bio) https://www.isaontario.com/job-board/

09/22/2026

We are beginning to plan for the 2027 ISA Ontario Experience Arboriculture Conference & Trade Show, and we’re looking for knowledgeable and engaging presenters to join us!

We are anticipating 500+ attendees, 50+ vendors and approximately 25 guest speakers at this year’s conference. Our audience includes arborists, tree care professionals, researchers, educators, municipal arborists and students, with the majority of attendees coming from across Ontario.

Here's some of the Presentation formats we are seeking:
🌳 1-hour presentations – including time for questions
🌳 2-hour sessions – with a break
🌳 General presentation sessions – PowerPoint or similar format
🌳 Keynote presentation – one keynote opportunity available
🌳 Hands-on workshops – workshops will be repeated 2 times
🌳 Practical Tree Work related presentations - We won't have a tree this year, but are happy to try and get creative!

Interested in presenting?
Please visit our Call for Presentations page (link in bio) or: https://www.isaontario.com/call-for-conf-presentations/

09/20/2026

The countdown begins now! ⏱️ In 5 months, we are bringing the Arboricultural community together in Huntsville, ON at the beautiful Deerhurst Resort .

Clear your schedules for ISA Ontario's Annual Conference + Trade Show this coming February 17-19, 2027 and Experience Arboriculture—you won’t want to miss this.

🌳🌲

Address

7856 5th Line, South
Milton, ON
L9T2X8

Opening Hours

Monday	9am - 4pm
Tuesday	9am - 4pm
Wednesday	9am - 4pm
Thursday	9am - 4pm
Friday	9am - 4pm

Telephone

+18884632316

Website

https://isaontario.com/

Alerts

Be the first to know and let us send you an email when ISA Ontario posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.

Contact The Organization

Send a message to ISA Ontario:

Want your organization to be the top-listed non profit organization in Milton?