ISA Holiday Break and Atlanta Relocation Information

The ISA headquarters will be closed for the holidays from 5 p.m. CST, 21 December 2018 through 8 a.m. EST, 7 January 2019. During this break, operations will transition from the office in Champaign, Illinois, to Atlanta, Georgia.

Beginning 26 December 2018, ISA will have customer support available for members and credential holders from 8:30 a.m. to 5 p.m. EST, Monday through Friday. Call +1-217-355-9411 or 888-472-8733 (US and Canada only) or email for assistance. ISA’s dedicated team of customer service professionals are ready to assist!

Read more to find answers to other frequently asked questions.

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2019 ISA Product Catalog Now Available

Find the resources you need on pruning and planting and to earn valuable CEUs. Also featured are products to help educate your customers on proper tree care. Flip through our mini-catalog to browse featured products and click through to shop in our web store.

Don't forget, ISA members enjoy significant savings with member discounts.

View the catalog now!

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ISA Seeks Qualified Nominees for the ISA Board of Directors

The structure of ISA’s Board of Directors consists of the president, the president-elect, and thirteen directors. Five directors are elected by the Council of Representatives (CoR) and eight are elected directly by ISA members.

The purpose of this notice is to solicit nominations for three Board Directors who will be elected by ISA members. The terms of three current Board Directors will expire in August 2019. ISA members can nominate ANY member of ISA in good standing. 

If you would like to nominate yourself or someone else as a candidate for the ISA Board of Directors, please send the name to Sheilah Trail at ISA. The person you nominate must be a current member of ISA.

Nominate someone today!

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December Issue of Arborist News Now Online

The latest issue of Arborist News is now online!

In this issue:
- Core Concepts of Plant Appraisal 
- A Future Under Climate Change
- Lightning & Tree Damage 
- Genus Use Limits Safeguard Street Tree Populations 
- Urban Forest Diversity: Past is Prologue 
- Women’s Arb Camp 2018 

Log-in to read the issue now

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November Issue of Arboriculture & Urban Forestry Now Online

The latest issue of Arboriculture & Urban Forestry is now online!

In this Issue:
- Civic Science in Urban Forestry: Introduction to a Second Special Issue
- Citizen Science and Tree Health Assessment: How Useful Are the Data?
- Accuracy of Volunteer-Derived Data from a Single-Day Inventory Event Built Around a Crowdsourced Tree Mapping Application
- Monitoring Young Tree Survival with Citizen Scientists: The Evolving Tree Checkers Program
- Drivers of Public Participation in Urban Restoration Stewardship Programs: Linkages Between Environmental Identity and Knowledge, and Motivations
- Volunteering for Forest Health: A Public-Private Partnership in Oakville, Ontario, Canada
- Inspiring Resident Engagement: Indentifying Street Tree Stewardship Participation Strategies in Environmental Justice Communities Using a Community-Based Social Marketing Approach

Log-in to read the issue now

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2019 ISA Conference Abstract Open


The International Society of Arboriculture is now accepting presentation submissions for the 2019 ISA Annual International Conference & Trade Show. Our goal is to provide a program that meets the educational needs of attendees presented by speakers of the highest quality who represent the diversity of the ISA membership.


Submit Presentation


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Image Database

ISA has a vast inventory of arboriculture- and urban forestry-related images that were compiled with the help of our members and volunteers.

Through a partnership with Forestry Images, ISA has thousands of photos and graphics available for use. ISA either owns the photos or has permission to permit their use.

Access the Image Database to browse the collection of images.

International Tree Climbing Championships

Press Releases

For inquiries about ISA news and media opportunities, contact our Communications Specialist.