Showing the world the benefits of trees

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

Read More

Keep up with ISA

ISA Office Closure
The ISA Headquarters will be closed on Thursday and Friday, 22 and 23 November 2018 for the Thanksgiving Holiday. Orders received after 2:00 p.m. CST on 21 November will ship on Monday, 26 November.

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

December 11-12, 2018

Illinois Arborist Association 36th Annual Conference & Trade Show

Tinley Park, IL United States Tinley Park Convention Center

December 12, 2018

Report Writing for Arborists

Oregon City, Oregon United States Clackamas Community College, Environmental Learning Center

December 12-14, 2018

Pesticide Applicator Recertification Workshop

Casper, WY United States All Trees LLC

December 13, 2018

WCISA's Annual Pest and Disease Conference

Oakland, CA United States Jack London Aquatic Center

December 13, 2018

2018 GAA Winter Workshop and Awards Luncheon

Atlanta, GA United States TBD