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

April 18, 2019

Trees and Construction

Kelowna, BC Canada Ramada Hotel & Conference Centre – Kelowna

April 22-23, 2019

ArborMaster L1 Precision Tree Felling, Chainsaw Safety and Handling

Asheville, NC United States Biltmore Estate

April 22-24, 2019

Tecnicas Eficientes & Seguras de Trepa


April 23, 2019

Basic Tree Identification

Seattle, Washington United States Washington Park Arboretum – Graham Visitor’s Center

April 24-26, 2019

L1 ArborMaster Tree Climbing Methods, Work Positioning & Best Practice

Asheville, NC United States Biltmore Estate