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.

Join Now

2020 Board Meetings

March 13th - Conference Call
May 8th - Conference Call
August 21st - Meeting in person: Pittsburgh, PA
October 16th - Conference Call
December 11th - Meeting in person: State College, PA