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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Please note: ISA’s customer care facility will be closed in observance of Presidents Day, Monday, 18 February. It will reopen at 8 a.m. EST (USA), Tuesday, 19 February. Online access to accounts and the ISA store will be uninterrupted. Orders received after 2 p.m. EST, Friday, 15 February will be processed Tuesday, 19 February.

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

February 17-19, 2019

2019 WAA/DNR Annual Conference

Green Bay, WI United States KI Convention Center

February 18, 2019

Assessment of Tree Junctions/ Dr. Duncan Slater

Madrid, Madrid Spain Jardín Botánico de Madrid

February 20-22, 2019

ISA Ontario 70th Annual Conference & Trade Show

Windsor, Ontario Canada Caesars Windsor

February 20, 2019

Tree Planting and Installation

New Brunswick, NJ United States Cook Student Center

February 21-22, 2019

KAA 2019 Annual Conference

Burlington, Kentucky United States Boone County Extension Enrichment Center