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 5 February 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

January 10, 2019

WCISA - Western Tree Failure Database Conference

Woodside, CA United States Filoli Gardens

January 14, 2019

Effective Report Writing: Guidance for Arborists and Urban Foresters

Surrey, British Columbia Canada Surrey Nature Centre

January 14 - February 18, 2019

ISA Arborist Prep Course

Oakland Park, FL United States Tree Trimmers And Associates

January 22-24, 2019

Indiana Arborist Association Annual Conference

Indianapolis, IN United States Indianapolis Marriott East

January 23, 2019

Advanced Arboriculture - The Structure and Function of Trees

Plant City, FL United States John R. Trinkle Center