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.


COVID-19 Pandemic

Please read our statement regarding the impact this pandemic is having on our industry.  Click HERE


Become a Member

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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2019 Board Meetings

March 15th - Meeting in person: Camp Swatara
May 10th - Meeting in person: State College, PA
August 23rd - Meeting in person: Pittsburgh, PA
October 25th - Meeting in person: Hagley Museum Wilmington, DE
December 13th - Conference Call