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 22-23, 2018

ISA Prairie Chapter Annual Conference

Olds, Alberta Canada Pomeroy Hotel

October 22-23, 2018

ArborMaster L1 Precision Tree Felling, Chainsaw Safety and Handling

Wrentham, MA United States

October 22-25, 2018

2018 ISA Leadership Workshop

Champaign, Illinois United States

October 23-25, 2018

Roots and Trees: Different shapes and functions. Biology and biomecanics

Terrassa, Barcelona Spain Parc de Sant Jordi. Masía Freixa

October 23, 2018

Pruning Deciduous Trees

Philadelphia, PA United States Morris Arboretum