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

March 19, 2019

WCISA - Resetting the Standards of Tree Care Tour

Mesa, AZ United States University of Nevada Cooperative Extension - Lifelong Learning Center

March 20-22, 2019

Introductory Tree Climbing

Philadelphia, PA United States Morris Arboretum

March 21, 2019

TCIA's Electrical Hazard Awareness Program (EHAP)

Milwaukie, OR United States The Public Safety Building Community Meeting Room

March 21, 2019

Diagnosis and Identification of Plant Diseases

Philadelphia, PA United States Morris Arboretum

March 22, 2019

Precision Chainsaw Cutting & Felling

Richmond Hill, GA United States Vermeer Southeast - Savannah