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, 11 September 2026, through Friday, 18 September 2026, will not ship until the week of 21 September 2026. Starting 21 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.

Join ISA

ISA Membership Type

Select which ISA membership is right for you!

ISA Professional Membership $135.00

The ISA Professional Membership is offered to all individuals actively engaged in the arboriculture industry or anyone who has an interest in trees and tree care. ISA Professional Membership provides a wide range of benefits and resources.

As an ISA Professional Member, you will receive:

  • ISA publications at your fingertips
  • Discounts on online CEU quizzes and merchandise purchased through the ISA web store
  • Reduced registration fees for ISA meetings, workshops, and conferences; and much more!
  • Don’t forget about the numerous opportunities that ISA offers to network with like-minded professionals and develop your career.

ISA Student Member Varies by Chapter

ISA offers a Student Membership at no charge (it’s free!) for students who join their local ISA chapters. Continue below and you will be given the opportunity to join your local chapter.

Some rules apply:

  • If you live in a region that does not have an ISA chapter, ISA offers a Student Membership for $30.
  • To qualify for ISA Student Membership, you must be a high school, undergraduate, or graduate student approved for membership by your local chapter.
  • If you wish to join ISA directly, please provide proof that you are enrolled in at least six academic hours of arboriculture-related coursework during the next six months.

As an ISA Student Member, you will receive:

  • Online access to ISA publications
  • Discounts on online CEU quizzes and merchandise purchased through the ISA web store
  • Reduced registration fees for ISA meetings, workshops, and conferences
ISA Senior Membership $70.00

The ISA Senior Membership is limited to those who are retired or working less than 15 hours a week, who have been an ISA member for 10 cumulative years, and are 62 years old or greater.

Please submit a request that includes the above Senior Membership eligibility requirements to [email protected].

ISA Associate Membership $70.00

ISA offers the option of an Associate Membership to individuals who have a permanent residence in a province or country where English is not the official country language. The membership fee for an Associate Membership is reduced in recognition that some ISA membership benefits may not provide their fully-intended value due to the language barrier.

As an ISA Associate Member, you will receive:

  • Online access to ISA publications
  • Discounts on online CEU quizzes and merchandise purchased through the ISA web store
  • Reduced registration fees for ISA meetings, workshops, and conferences