Showing the world the benefits of trees

We promote the professional practice of arboriculture to foster a greater awareness of the benefits of trees.

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Keep up with ISA

ISA Accepting Nominations for 2019 Awards of Distinction and True Professionals

Nominate the best professionals in the arboriculture industry by 4 March 2019. Submit your nomination!

2019 ISA Conference Call for Presentations

The International Society of Arboriculture is now accepting presentation submissions for the 2019 ISA Annual International Conference & Trade Show. Submit your presentation before the 1 March 2019 deadline.

ISA Expands Certification Eligibility Requirements

ISA has announced expanded eligibility criteria for the ISA Certified Arborist® certification recognizing assessment-based programs to fulfill the education requirements to take the exam.

Upcoming Events

August 21-22, 2019

Introduction to Tree Climbing

Seattle, Washington United States Washington Park Arboretum – Graham Visitor’s Center

August 21, 2019

The Dirt on Soils for Urban Trees

Wimauma, Florida United States UF-IFAS Gulf Coast Research and Education Center

August 21-23, 2019

Farwest Show

Portland, Oregon United States Oregon Convention Center

August 23, 2019

The Dirt on Soils for Urban Trees

Jacksonville, Florida United States UF-IFAS Duval County Extension

August 30 - September 1, 2019

ANTCC 2019 - Austrian National Tree Climbing Championship

Waidhofen an der Thaya, LA Austria Thayapark