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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Office Closure 

ISA will be closed Friday, 3 July 2020, in observance of the Independence Day holiday.

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2020 Awards of Distinction and True Professionals

The nomination period is closedThe 2020 award winners will be annouced at the ISA Annual International Conference and Trade Show.


Upcoming Events

July 10-12, 2020

CANCELLED-2020 ISA Europe Tree Climbing Championship

Budmerice, Slovakia Kastiel Budmerice

July 16-20, 2020

2° Campeonato Colombiano de Trepa de Árboles, Cali 2020

Cali, Valle del Cauca Colombia Parque de la Hormiga

July 20-21, 2020

ArborMaster L1 Precision Tree Felling, Chainsaw Safety and Handling

Ashford, CT United States