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

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 21 December 2018 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.

See You In Knoxville!

We're looking ahead to the 2019 ISA International Conference & Trade Show and ITCC in Knoxville, TN!

Upcoming Events

October 24-26, 2018

L1 ArborMaster Tree Climbing Methods, Work Positioning & Best Practice

Attleboro, MA United States

October 25, 2018

EHAP Workshop

Denver, CO United States Balistreri Event Center

October 26-28, 2018

Latin American Tree Climbing Championship

Medellín, Antioquia Colombia Parque La Floresta

October 26-30, 2018

III Congreso de Arboricultura ACA / II Congreso Latinoamericano de la ISA

Medellin, Antioquia Colombia Universidad Nacional de Colombia

October 27, 2018

Advance Climbing Workshop

, Wiltshire United Kingdom Acer Tree Surgeons Ltd