Contact Us

Email us
Phone: +1.678.367.0981
Fax: +1.240.547.1795

Mailing Address

International Society of Arboriculture
PO Box 191
Annapolis Junction, MD 20701
United States

Physical Address

International Society of Arboriculture
270 Peachtree St NW, Suite 1900
Atlanta, GA 30303
United States

Store
  • Due to ISA’s annual physical inventory, orders placed through the ISA Online Store after 9:00 a.m. EDT on Friday, 5 September 2025, through Friday, 12 September 2025, will not ship until the week of 15 September 2025. Starting 15 September, ISA will resume regular turnaround times. We apologize for the inconvenience and ask that you plan your orders accordingly. If you have any questions, please contact the customer service team at +1.678.367.0981 or [email protected]. Thank you for your patience.

Tree Worker Climber Specialist

Any educational or preparatory material, whether published by ISA or not, should NOT be considered the sole source of information for an ISA certification examination. This publication and the ISA certification program exams are developed through separate processes and entities.

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