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Latest News

Z133 Accredited Standards Committee

APPLICATION OPEN FROM JUNE 14 - AUGUST 11, 2017 (NO LATE APPLICATIONS WILL BE ACCEPTED) Membership on the Z133 committee or one of its task groups is generally by an organization, such as a trade association, technical association, business, labor organization, or similar entity that represents more than one individual. Individuals with particular expertise in the activities of the committee may be also considered for membership. Membership on the committee, or one of its task groups, is subject to review and approval by the secretariat, the International Society of Arboriculture (ISA).

August Issue of Arborist News Online

Check out the latest issue with articles on Sidewalk Solutions, Palms, and Sustainability. Plus Climbers' Corner: Call for An Emergency

Results of the ISA Board of Directors Elections

View the results. The terms for these elected positions will begin in August 2017 in conjunction with the ISA Annual International Conference and Trade Show in Washington, DC, and will end in August 2020.

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.

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

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

Member Get A Member - Thank you to all who participated

View the list of ISA members who helped us successfully recruit 176 new members.

Volunteer Now for the 2017 APTCC

Sign up on line to volunteer for the 2017 APTCC in Perth, Australia on October 21-22

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

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 23, 2017

Tree Law: Your Blueprint for Success

August 23, 2017 - August 25, 2017

Tree Risk Assessment Qualification - Dover, DE

August 24, 2017 - August 26, 2017

Tree Risk Assessment Qualification - Leawood, KS

August 24, 2017

Aerial Rescue Emergency Preparedness Training

August 24, 2017

Trees and the Law in Canada

August 25, 2017

Aerial Rescue Emergency Preparedness Training

August 25, 2017

Tree Law: Your Blueprint for Success

October 20, 2017 - October 22, 2017

2017 North American Tree Climbing Championship

October 21, 2017 - October 22, 2017

2017 Asia Pacific Tree Climbing Championship

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