Seeking New Executive Director

We are looking for a highly motivated team builder and leader with a vision for expanding the reach and impact of our organization for current and future members, and the arboriculture industry in our region.

Find out more.

Annual Conference

ATC 2019. Trees & the Triple Bottom Line: protecting people, prosperity and planet. Pacific Northwest ISA Annual Training Conference. Eugene, Oregon, October 6-9, 2019.

Trees and the Triple Bottom Line: Protecting People, Prosperity and Planet
Eugene, Oregon, October 6-9, 2019

Explore the role that trees and urban nature play in our highly-complex modern world, and how arborists and allied professionals can use the Triple Bottom Line lens to guide their work.

Learn more and register to attend.

Get Certified

woman hanging from tree

With an ISA Certification, you can advertise all of the knowledge and experience you have gained during your green industry career. Your ISA Certification tells potential clients and employers that you can be trusted with their trees.

Discover which certification is right for you.

Take Classes

Outdoor adult classroom

Maintain your ISA certification and learn new techniques by taking a class from our diverse array of professional courses. You can learn about tree appraisals, risk assessment, healthy soils, and more.

Browse available classes.