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. Check back for further details.

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

September 23-24, 2019

ArborMaster L1 Precision Tree Felling, Chainsaw Safety and Handling

Wrentham, MA United States

September 24-25, 2019

Advanced Tree Climbing School

State College, PA United States Sunset Park

September 24, 2019

Time Management and Communication Etiquette for Green Industry Service Providers

Philadelphia, PA United States Morris Arboretum

September 25-27, 2019

ACTE - Tree Appraisal Qualification

Okotoks, Alberta Canada

September 25-27, 2019

ArborMaster L1 Tree Climbing Methods, Work Positioning & Best Practice

Attleboro, MA United States