Pacific Northwest International Society of Arboriculture

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Pacific Northwest International Society of Arboriculture

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The mission of the Pacific Northwest Chapter of the International Society of Arboriculture (PNW-ISA)

11/02/2026

🌳 Save the Date: Our Life in Trees – A Pruning Workshop for the Willamette Valley!

Join us on February 19, 2027, for a full day dedicated to pruning and tree care at Clackamas Community College in Oregon City!

Whether you're looking to build your knowledge, sharpen your skills, or connect with fellow tree care professionals, this workshop is one to add to your calendar.

📅 February 19, 2027
⏰ 8:30 AM–4:30 PM
📍 Clackamas Community College
19600 Molalla Ave, Oregon City, OR 97045

Registration details, including featured speakers and topics, will be available starting December 1. Stay tuned!

10/13/2026

🌳🏆 Congratulations to Our PNW-ISA Representatives at ITCC!

A big congratulations to Charles Lystrup and Ellen Odmark for representing the Pacific Northwest Chapter at this year’s International Tree Climbing Championship (ITCC)!

This year’s competition was especially memorable as ISA celebrated its 50th anniversary of ITCC by returning to its roots in St. Louis.

A special congratulations to Ellen on advancing to the Masters Challenge! 🎉

We’re proud to see our PNW-ISA community represented on the international stage. Thank you both for showcasing your skills, dedication, and passion for arboriculture!

10/13/2026

🌲 Take the next step in professional tree appraisal.

The Tree and Plant Appraisal Qualification (TPAQ) course is coming to Oregon City November 5–6!

Learn how to approach tree and plant appraisals using current methods and techniques, apply appraisal concepts, and develop reasoned judgments about plant value.

📅 Nov. 5–6 | 8 AM–4:30 PM
📍 Clackamas College
👨‍🏫 John Bornsworth
💡 Seats are limited. Eligibility documentation and registration are due October 21, 2026.
Learn more: https://pnwisa.org/events/EventDetails.aspx?id=2063278&group=

10/12/2026

🌲🌊 Managing Trees & Vegetation on Puget Sound Shorelines

How do trees, vegetation, and shoreline processes interact? Join John Bornsworth in Olympia on October 23 for a one-day workshop exploring shoreline ecology, tree risk, erosion control, restoration, permitting challenges, and best management practices.

This workshop includes real-world Washington case studies and offers 7.5 CEUs for qualifying attendees.

📅 October 23, 2026
⏰ 8:00 AM–4:30 PM
📍 South Puget Sound Community College | Olympia, WA

🎓 PNW-ISA Member: $160
🎓 Non-Member: $195
🎓 Student Member: $110
Register by October 19 to include lunch!
🔗 Register: https://pnwisa.org/events/EventDetails.aspx?id=2064391&group=

10/05/2026

🌲 A new issue of PNW-ISA Trees magazine is here! 🌿

This fall Annual Training Conference issue is packed with timely ideas and practical insights for arborists, urban foresters, tree care professionals, and everyone working to build healthier, more resilient community canopies. 🍃

From climate adaptation and urban forest stewardship to team culture, project management, and the growing role of AI, this issue explores the challenges—and opportunities—shaping the future of our profession. 🤝💡

Inside, you’ll find articles including:
🌎 Growing Resilience: Protecting Urban Trees in a Changing Climate
📊 KPIs & Performance Tracking in Tree Care Operations
🌳 Managing More than Trees
🔗 Are Dynamic Cables the Best Option?
🐾 The Most Abundant Animals in Arboriculture
🧰 Building Your Project Management Toolbox for Urban Forest Stewardship
🧩 Connecting the Dots: Looking at Canopy Resilience Through Different Lenses
🗣️ The Importance of Communication and Culture in Tree Work
🤖 AI and the Future of Urban Forestry
🏙️ Can They Coexist? Navigating the Trade-off Between Hillsboro’s AI Data Centers and Urban Forest Retention

Read the latest issue of PNW-ISA TREES here:
https://isu.pub/pNhgGDC

09/29/2026

🌳 ATC ’26 Speaker Spotlight: Anya Moucha

Emerald Ash Borer has arrived in Portland. 🪲 How is the city responding?

Join Anya Moucha for “EAB Management in Portland” to explore how Portland is preparing to protect its urban forest and manage the impacts of this invasive pest.

The session will cover monitoring and early detection, insecticide treatment, proactive removal, outreach and engagement, regulatory changes, and strategies for managing EAB in natural areas.

🌿 Meet the Speaker:
Anya Moucha is the Forest Pests and Pathogens Coordinator with Portland Parks & Recreation Urban Forestry, where she guides the city’s response to forest health threats, including EAB, Mediterranean Oak Borer, and Dutch Elm Disease. She is a certified arborist with a Master’s in Landscape Architecture and a background in landscape design and project management.

📅 September 27–30, 2026
📍 Boise Centre | Boise, Idaho
✨ Les Bois! Les Bois! Rooted in Resilience

09/28/2026

🌲 Thank You to Our ATC ’26 Sponsors & Exhibitors! 🌲

We’re incredibly grateful to the sponsors and exhibitors who help make the PNW-ISA Annual Training Conference ’26 possible! Your support plays an important role in bringing our arboriculture community together for learning, connection, and collaboration.

Be sure to stop by the exhibitor tables throughout the conference to meet our sponsors and exhibitors, explore the products and services they offer, ask questions, and make new connections. 🤝

Your support helps strengthen our industry, and we’re excited to have you with us in Boise!

📅 September 27–30, 2026
📍 Boise Centre | Boise, Idaho
✨ Les Bois! Les Bois! Rooted in Resilience

Thank you for being part of ATC ’26! 🌳

09/28/2026

🍄 ATC ’26 Speaker Spotlight: Andrea Fisher

What’s happening inside a tree when fungal pathogens take hold? 🌲 Join Andrea Fisher for “Recognizing Common Fungal Pathogens and Understanding How They Can Affect Your Work in the Tree.”

This session will explore how to identify common PNW fungal pathogens, understand their decay strategies, and recognize how they affect wood structure and strength—then apply that knowledge to climbing and rigging decisions.

Andrea will focus on conifer pathogens and how understanding the location and type of decay can help arborists develop safer, more informed work plans.

🌿 Meet the Speaker:
Andrea holds a B.S. in Environmental Science from the University of Washington and has experience with the Washington Conservation Corps, municipal forestry, and production tree care. She has spent the past five years with Bartlett Tree Experts in Lynnwood as a crew lead, climber, and part-time field consultant.

📅 September 27–30, 2026
📍 Boise Centre | Boise, Idaho
✨ Les Bois! Les Bois! Rooted in Resilience

09/28/2026

🌱 ATC ’26 Speaker Spotlight: Alex Best & Joshua Goode

Plant Health Care doesn’t have to be intimidating. Join Alex Best and Joshua Goode for “Plant Health Care From the Ground Up: Building Practical, Regional Programs That Last.”

This session will explore how to start, strengthen, or refine PHC services using practical tools, realistic entry points, and region-specific strategies rooted in IPM, monitoring, seasonal timing, and cultural care.

Attendees will learn about start-up equipment, scouting and treatment schedules, proposal language, client expectations, and adapting recommendations to local pest pressure, climate, and regulations—with Pacific Northwest examples throughout.

🌿 Meet the Speakers:
Alex Best is a Tree Service Manager & Business Developer at BrightView and an ISA Board Certified Master Arborist with more than a decade of experience as a Commercial Pesticide Applicator.

Joshua Goode is an ISA Board Certified Master Arborist and owner of Goode Arbor in Portland, Oregon. With 15+ years of experience across horticulture, research, arboriculture, and PHC, he focuses on science-based, regionally adapted plant health programs.

📅 September 27–30, 2026
📍 Boise Centre | Boise, Idaho
✨ Les Bois! Les Bois! Rooted in Resilience

09/28/2026

🌳 ATC ’26 Speaker Spotlight: Robin Hastings

Community tree planting events can grow more than trees—they can build stewardship, strengthen partnerships, and bring communities together. 🌱

Join Robin Hastings for “Project Management for Community Tree Planting Events” to learn how thoughtful planning and project management can turn a great idea into a successful planting event.

The session will cover site selection, species suitability, risk management, stakeholder alignment, timelines, work breakdown structures, communication plans, volunteer coordination, safety, and day-of logistics.

Attendees will also receive downloadable, customizable tools including timeline templates, volunteer briefing checklists, planting-day task lists, and event evaluation forms—so you can put what you learn into practice right away.

🌿 Meet the Speaker:
Robin is an arborist and urban forester with 15+ years of industry experience. As Urban Forest Planner for the City of Abbotsford, he has planned and managed community-focused initiatives, including the city’s first Tree Canada National Tree Day event. He also strengthened his project management expertise through UBC’s Master of Urban Forestry Leadership program.

📅 September 27–30, 2026
📍 Boise Centre | Boise, Idaho
✨ Les Bois! Les Bois! Rooted in Resilience

Address

Tigard, OR

Telephone

+15038748263

Website

http://pnwisa.org/

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