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Latest News

International Society of Arboriculture Announces Selection of New Executive Director

The ISA Board has selected Caitlyn Pollihan as the organization's new executive director. Learn more about Caitlyn and the expected transition timeline in the official news release from ISA.

The June Issue of the Arborist News Now Online

Read the latest issue. Be sure to check out the articles from conference speakers like keynote presenters John Gathright and Mark Buscaino.

Use of ISC’s Rope Wrench in European Competitions

ISA will accept only the new CE certified Rope Wrench (with proper markings on the equipment) in European climbing competitions, effective immediately. Read the details on this decision.

NATCC 2017 - ISA is Now AcceptingVolunteers.

Sign up by August 31 to help out in Salt Lake City.

Recall on STIHL gas-powered chain saws

The Consumer Product Safety Commission (CPSC) announced a recall of 100,000 STIHL chainsaws that are at risk of fire and burn hazards.

ITCC Update: Approval for use of ISC’s D4 & D5

ISA has issued a notice regarding approval for use of ISC's D4 & D5

Safety is Critical Requirement when Looking to Hire an Arborist for Tree Care

Tree work can be dangerous. The International Society of Arboriculture reminds consumers to choose professional arborists who are well-trained in safety and industry best practices.

2017 ITCC Rules Available Online

The revisions for the 2017 ITCC rules are now available on line. These rules take effect as of the ITCC being held 28-30 July. Email questions to

Update: Mechanical Devices Approved for Stationary Rope Systems

In an effort to offer the latest in innovation for climbing equipment and techniques, ISA has clarified terms and approvals for stationary rope systems. Please view the complete update.
Upcoming Events

June 27, 2017 - June 29, 2017

Tree Risk Assessment Qualification - Reynoldsburg, OH

June 29, 2017

WCISA - Following the Z's - Safety Rules to Live by - Wailuku

June 29, 2017

More Conifer Pests and Diseases

June 30, 2017

ISA Certified Arborist Preparation Course

June 30, 2017

WCISA - Following the Z's - Safety Rules to Live by - Kailua-Kona

July 28, 2017 - August 2, 2017

2017 ISA Annual International Conference & Trade Show with ITCC

July 28, 2017 - July 30, 2017

2017 International Tree Climbing Championship

August 7, 2017 - August 9, 2017

Tree Risk Assessment Qualification - Folsom, CA

August 21, 2017 - August 23, 2017

Tree Risk Assessment Qualification - Victoria, BC

August 23, 2017 - August 25, 2017

Tree Risk Assessment Qualification - Des Moines, IA

August 24, 2017 - August 26, 2017

Tree Risk Assessment Qualification - Leawood, KS

September 21, 2017 - September 23, 2017

Tree Risk Assessment Qualification - Springfield, MO

October 20, 2017 - October 22, 2017

2017 North American Tree Climbing Championship

October 23, 2017 - October 25, 2017

Tree Risk Assessment Qualification - Dorval, Quebec

November 6, 2017 - November 8, 2017

Tree Risk Assessment Qualification - Liverpool, NY

November 9, 2017 - November 11, 2017

Tree Risk Assessment Qualification - Philadelphia, PA

November 16, 2017 - November 18, 2017

Tree Risk Assessment Qualification - Oyster Bay, NY

©International Society of Arboriculture 2009-2017
PO Box 3129 • Champaign, IL 61826, USA • +1.217.355.9411

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