Dates & Locations:
Sydney: 4 - 6 August 2026
Melbourne (Geelong): 4 - 6 August 2026
Melbourne (Burnley University): 6-8 October 2026
Perth: 14 - 16 October 2026
Sydney: 10 - 12 November 2026
Adelaide: 18 - 20 Nov 2026

The program expands your fundamental knowledge of tree risk assessment by learning a standardised, systematic process for assessing tree risk.

Dates & Locations:
Geelong: 6 August 2026
Melbourne (Burnley University): 8 October 2026
Perth: 16 October 2026
Sydney: 12 November 2026
Adelaide: 20 Nov 2026

Arboriculture Australia in collaboration with New Zealand Arboricultural Association is delighted to announce the development of the AANZAA Tree Risk and Tree Valuation Assessment methods and app.

AANZAA offers a structured, evidence-based framework to help arborists assess, communicate and manage more effectively.

AANZAA Tree Valuation and Risk methods recognise the benefits of trees and supports balanced, consistent, robust decision making.

Learn more

Date: 10 - 12 August
Location: Detroit, Michigan, USA

Join us for the ISA 2026 Annual International Conference in Detroit, Michigan, U.S., 10-12 August 2026! Known as the birthplace of the Model T and the Motown sound, Detroit boasts unique architecture, historic green spaces, and a vibrant, revitalized downtown. Experience the energy of Detroit while expanding your knowledge and network at this year’s conference. 

Date: Tuesday 11 August
Time: 12:00–1:00pm AEST

• Public liability & professional indemnity explained

• Insurance & subcontractors

• Standard conditions of cover

• What to do in a claim

• Other covers to consider

Two day training - Fundamentals and Field tour of the eucs!

Date: 27 - 28 August
Location: Sydney

Unlock the mystery of Australia’s most iconic trees with a hands-on workshop tailored to your region. With over 1,000 species, eucalypts can be famously tricky to ID -  this immersive course breaks it down using localised samples and practical techniques.

​Workshops blend engaging presentations, ID tools, specimen handling, and field-based learning.

Date: 3rd & 4th September

Location: National Wine Centre, Adelaide

Tour: optional post-symposium tour to Currency Creek on 5th September

The theme focussing on Trees Connecting Communities is clearly reflected in the draft program currently available on our website. 

TREENET’s symposium is famous for its networking opportunities and there are plenty in the program for 2026: before and after the plenary sessions, in breaks during the day sessions, an open bar following Thursday’s presentations, plus a cocktail dinner of canapes and more all included in the ticket price.

Registration is accessible via our website registration pages.  We recommend you register early to avoid missing out on earlybird rates.  

Please note the following dates:

11 June 2026: Earlybird registration closes

15 August 2026: complimentary registration closes

20 August 2026: late fees apply

If you have any questions contact admin@treenet.org or 0491 768 866.

Date: 9 - 11 Oct
Location: St Louis, Missouri, USA

Date: 29 - 31 October
Location: Rotorua NZ

In 2026, we gather in Rotorua—a city rich in history, culture, and whenua connections—to celebrate the strength of our community and the stories that ground our profession. You can expect the Energy Event Centre to be buzzing with arborists from across the motu: business owners, business managers, practising arborists, municipal and utility arborists, consultants, researchers, educators, and students.