Reminder: All payments and communications mailed to ISA should be directed to our customer service team at:

International Society of Arboriculture
P.O. Box 191
Annapolis Junction, MD 20701
United States

ISA Headquarters will be closed 24 December 2019 through 1 January 2020 for our annual holiday closure. There will be limited customer service support available during this extended closure.

The ISA Credentialing Council is the group that governs policies affecting fairness and impartiality of our credentialing programs. Policies that govern eligibility and maintenance of our credentials fall within their responsibility and authority.

The 2020 Request for Proposals (RFP) to feature your innovation at the upcoming Sustainable Urban Forests Coalition (SUFC) 15th Annual Meeting on Wednesday, 4 March 2020, is now open. SUFC will select up to four programs, research ideas, new technologies or campaigns (collectively referred to as "projects"). Each of the four chosen project representatives will present an overview of their respective project along with a "Call for Collaboration" to the SUFC membership and supporters. For more information, or to submit your proposal, please visit their website.

Read the latest issue of Arborist News magazine. Featured in this issue: Detective Dendro: The Case of the Christmas Catastrophe, Introducing Youth to Arboriculture and Urban Forestry, 15 Years of TREE Fund Research Grant Program, highlights from the 2019 North American Tree Climbing Championship and much more.