The Pennsylvania-Delaware Chapter of the International Society of Arboriculture was founded in 1960. The purpose of this organization is to foster a greater appreciation for shade trees and to promote the science, technology, and practice of professional arboriculture in the states of Pennsylvania and Delaware.



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Penn Del ISA membership provides you with access to exclusive resources and discounts. An investment in a chapter membership pays itself back through discounts on continuing education, access to exclusive resources and content, and educational benefits that will advance your career.

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2018 Board Meetings

March 23rd - Meeting in person: Location - Lehigh Valley area
May 3rd - Meeting in person: Location- State College area
August 10th - Conference call 9:00 am - 11:30 am
October 5th - Meeting in person: Pittsburgh area
December 7th - Meeting in person: at the 2019 Symposium site