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

2023 Awards of Distinction and True Professionals

The nomination period for the 2023 Awards of Distinction and True Professionals will be opening soon.


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November 30 - December 2, 2022

ArborMaster L1 Tree Climbing Methods, Work Positioning & Best Practice

Chambersburg, PA United States Rhodes Grove Camp

December 2, 2022

2022 Winter Pruning Workshop, Augusta

Augusta, GA United States Augusta University: University Hall

December 2, 2022

Advanced Arboriculture and Tree Science

, United States Webinar

December 7, 2022

WCISA - Urban Deforestation: What Do We Know & What Can We Do? - Presented on Zoom

Porterville, CA United States Online Event

December 8-9, 2022

Hands On Course: Introduction to Climbing

Austell, GA United States Private Residence