The PNW-ISA is a member organization of arborists, urban foresters, educators and tree care enthustiasts from Alaska, British Columbia, Idaho, Oregon and Washington. We have nearly 1,000 members actively engaged in promoting proper tree care. The PNW-ISA is a chapter of the International Society of Arboriculture, a worldwide organization comprised of more than 13,000 members. Networking opportunities, an opportunity to learn and share your expertise, and all the benefits of belonging to a professional organization.
Members receive price discounts on all items.
To view a list and order form of PNW-ISA educational materials and apparel, click here. Member Categories Chapter and ISA Membership. A member directory and other networking benefits. Individuals wishing to make a significant donation to the PNW Chapter may receive a tax deduction. Individuals may purchase a lifetime membership in the PNW-ISA in lieu of paying annual dues.