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 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.

See You In Knoxville!

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

Upcoming Events

November 14-16, 2018

ACTE - Arborist Technical Rigging

Whitby, Ontario Canada

November 14-16, 2018

QTRA Training Course

Madrid, Madrid Spain La Rosaleda

November 14, 2018

Chipper and Chainsaw Operation in Spanish

Philadelphia, PA United States Morris Arboretum

November 15-16, 2018

Roots and mycorrhiza. Symbiotic associations between fungus and plants

Pamplona, Navarra Spain Casa Gurbindo