Events Calendar
ISA 2025 Annual International Conference
19 Oct, Ōtautahi | Christchurch

Next month, for the first time ever, New Zealand will host the International Society of Arboriculture (ISA) Annual International Conference.
Mid-October the world’s arboriculture community will gather in Christchurch—bringing together green industry leaders, movers, scholars, champions, and practitioners from across the globe.
This landmark event won’t return to our shores anytime soon. Don’t miss your chance to be part of history and contribute to the legacy it will leave for the arboriculture industry in Aotearoa.
A snapshot of the world-leading programme awaiting you:
- Opening keynote—Mark Johnston, Independent Scholar, UK
- Endurance & Expertise—Mike Lair, Seattle Tree Care
- Urban Tree Selection for a Changing Climate—Dr. Bert Cregg, Michigan State University
- Mature Tree Management in Singapore Botanic Gardens—Elango Velautham & team
- The Cutting Edge: AI and Innovation in Arboriculture—Mariah Menzie, Tree Wizard
- Creating History Through Trees—David Da Silva, Victoria Racing Club
- Human Factors in Arboriculture: Safety & Workflows—Graeme McMahon
- Plus dozens more world-class sessions, panels, and networking events
Date: 19–22 October 2025
Location: Te Pae Christchurch Convention Center, 188 Oxford Terrace, Christchurch, 8011
Pre- and post-conference workshops
Pre- and post conference tours
Register and secure your spot!
This is the international programme you’d normally have to travel halfway around the world to access—but this year, it’s in Christchurch!
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