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.

There are currently over eight hundred members in the chapter including commercial, consulting, municipal, and utility arborists, researchers and educators, horticulturists, and individuals interested in the care of trees and landscapes.

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

Arbor Day 2016

Do you want to put your skills to work by helping your community care for its shade trees? Each year, the Penn Del Chapter hosts Arbor Day events throughout Pennsylvania and Delaware. Events are being held this year on April 27. If you are interested in volunteering your time, we would love to have you join us.

Volunteer Now!