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

2020 Awards of Distinction and True Professionals

Nominations will be available soon, learn more about the awards.

2020 ISA Conference Call for Presentations

The International Society of Arboriculture will be accepting presentation submissions for the 2020 ISA Annual International Conference & Trade Show in the coming weeks. Learn more!

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

December 13, 2019

Intermediate Climbing & Rigging

Orlando, FL United States Vermeer Southeast - Orlando

December 14, 2019


Hayward, CA United States California State University, East Bay (CSUEB), Library Mall Walkway

December 16-17, 2019

Soil and Plant Relationships

New Brunswick, New Jersey United States Extension Conference Center

December 20-22, 2019

Malaysia Tree Climbing Championship 2019

Wilayah Persekutuan Putrajaya , SELANGOR Malaysia New Millenium Park Putrajaya

January 3 - March 13, 2020

Landscape Plants: Identification, Selection and Application

New Brunswick, New Jersey United States Extension Conference Center