An annual Arborist workshop focused on practical knowledge
about mature tree care.

Register before May 1, 2024 for the Early Bird discount!

Date: Friday, July 19, 2024
Time: 8:30am – 4:30pm (welcome and coffee at 8am)
Cost: $175 (coffee & lunch provided)
EARLY BIRD PRICING: $150
Location: 144 Geddes Street, Elora
Elora Public Library

Workshop Registration

Payment can be made via e-transfer to [email protected] and please put in the memo “2024 Arborist Workshop”
or a cheque made out to the Elora Environment Centre can be mailed to 75 Melville St, Elora, ON N0B 1S0 and please add a memo to include “2024 Arborist Workshop”
Once payment is received you will be emailed a confirmation for your spot in the workshop!


Visit TreeTrust.ca for more information about our projects
Presenter: Philip van Wassenaer, B.Sc. Environmental Sciences, Master of Forest Conservation


July 9th, 2024 Itinerary


This full day workshop will be a mix of lecture, case studies and ideas exchange coupled with outdoor, field learning. Come prepared to be part of the discussion, hear interesting illustrative case studies, and learn arboriculture techniques that will appeal to your clients who want to retain their trees not remove them.

Philip van Wassenaer, B.Sc. Environmental Sciences, Master of Forest Conservation, is the principal consultant for Urban Forest Innovations, Inc., which specializes in the preservation, enhancement, and management of the urban forest using a research- and science-based approach. He is an ISA Certified Arborist, ASCA Registered Consulting Arborist, current Director at ASCA, a Past President and Director of the Ontario Urban Forest Council and a 2009 recipient of the ISA True Professionals of Arboriculture Award.

Topic A:  Conservation Arboriculture for Older and Aging Trees

  • Describe the role and value of mature trees on the landscape, Compare and contrast the approaches and perspective  associated with conservation arboriculture for older and aging trees versus conventional /traditional tree care

Topic B: Tree Risk Assessment

  • Explain circumstances (when) and reasons why a more advanced risk assessment might  be appropriate, Explain how traditional risk evaluation equations may underestimate strength of older trees, Describe the tools/methods and information/outputs associated with advanced tree risk assessment (tree pulling and sonic tomography) 

Topic C:  Reduce the Crown/Retain the Tree

  • Describe the impact of crown reduction of older trees on tree rigor, biomechanics and risk, What are the factors to consider when determining the appropriate dose amount (of crown reduction)

Started in 2019 by the Elora Environment Centre, TreeTrust.ca is a platform that allows local community-based Chapters to raise charitable donations to invest in preserving important local legacy trees.
Each of the chapters works with one Tree Trust Approved Arborist who meets rigorous criteria to work on valuable legacy trees and who attend annual workshops to share experiences and expand their knowledge.
This July Tree Trust is offering a this special workshop open to any arborist who wants to gain practical knowledge about mature tree care. An increasing number of your clients are seeking professionals who can offer an alternative to wholesale removals – this workshop will help equip you to deliver.

Thank you to our 2024 workshop sponsors!

Sponsorship opportunity for Your Company at the summer Tree Trust Arborist Workshop

Sponsorship Benefits:
We will list you our promotional materials including on the ISAO calendar listing
Acknowledge your support on our Social Media and website
Signage at the workshop
Plus! One free admission to the workshop

Sponsorship cost: $500
To find out more, please contact:
Toni Ellis, ED Tree Trust 519-362-9469 [email protected]

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