Thanks to the Sponsors of the 2017 Portland Regional Tree Climbing Competition!

Thanks to the following companies for their sponsorship of the 2017 Portland Regional Tree Climbing Competition, held at Laurelhurst Park in June:

Rich’s Tree Service

Rich Gillum: $1,000.00

Teragan & Associates

Terry Flanagan: $1,000.00

Bartlett Tree Experts

Lyle Feilmeier: $751.00 Read More "Thanks to the Sponsors of the 2017 Portland Regional Tree Climbing Competition!"

2018 ArborMaster Climbing Kit Prize Package

The Pacific Northwest Chapter is pleased to announce the 2018 ArborMaster Climbing Kit Prize Package for the winners of the Chapter's annual Tree Climbing Championship (TCC), which will be held September 23-24 at Woodland Park in Seattle, WA.

This climbing kit will be presented to both the men’s and women’s champion and is intended to help equip them for competing as PNW’s representatives at the 2018 International Tree Climbing Championship (ITCC).

Each prize package includes:
• Husqvarna Composite Multi-Purpose Axe and Arborist Technical Helmet by Petzl
• Buckingham Master 5.0 Arborist Tree Climbing Saddle
• Silky Tsurugi Curve Hand Saw
• ArborMaster® 150’ Hawkeye Climbing Line by Samson
• OREGON® Tool Bag
• Vermeer Logo’d Camo Tumbler
• 50% savings for an ArborMaster® 2-Day or 3-Day Hands-On Training Module Read More "2018 ArborMaster Climbing Kit Prize Package"

Tour des Trees – 25-year Silver Anniversary

It all began in 1992, in the Pacific Northwest Chapter, when 13 hardy souls decided they could raise money for trees by riding their bicycles from Seattle to San Francisco in eleven days. The inaugural ride was 1,050 miles. The riders averaged over 100 miles a day with the longest day being 144 miles. The first Tour des Trees exceeded their goal of $60K by raising nearly $100K. Twenty-five years later the Tour is still going strong. This year’s riders traveled a mere 578 miles in seven days and raised over $300K for tree research and education. In 25 years the Tour des Trees has raised more than $3 million dollars and riders have pedaled nearly 15 thousand miles, all in the name of tree research and education. Not too bad for a bunch of tree hugging cyclists! Read More "Tour des Trees – 25-year Silver Anniversary"

Interested in Serving on the Board?

Program Director Nominations

The Board is seeking candidates for each of the five Program Director positions on the Executive Committee, which will be up for election at this year’s AGM in Lynnwood, WA. Those positions are: Read More "Interested in Serving on the Board?"

The Times They Are a-Changin’ … PNW-ISA is seeking a new Editor!

That’s right: long-time Editor Susan Munro is finally retiring from active duty! While she has agreed to stay on until the end of the year, the Winter 2017-18 edition will be the final newsletter produced under her “eagle editorial eye.”

The Chapter is embarking on a new strategic plan, and with our technological capacity ever-improving, there may be opportunity in the future to expand the role beyond just producing a quarterly newsletter. The Board is therefore seeking individuals who are interested in fulfilling the position as it currently exists and who are also open to the possibility of additional responsibilities however those may be determined down the road (e.g., in the areas of social media, general Chapter communications, etc.). Read More "The Times They Are a-Changin’ … PNW-ISA is seeking a new Editor!"

Chapter Award Nominations

The annual PNW-ISA awards will be presented during the Lynnwood ATC. Nominations are open for:

  • Arborist of the Year
  • Tree Worker of the Year
  • Volunteer of the Year

Use the new mobile-friendly online form or access the PDF version to nominate someone you know that has contributed to the community this year.

Trees for Central Washington

Washington is well known for its verdant forestlands; however, the center of our state is very different. The coulees, shrub-steppes and other high desert landscapes of central Washington are tough environments for trees. This leaves cities asking “what can I plant here?”

For purposes of this article, we are defining central Washington as Douglas, Lincoln, Adams, Franklin, Grant, Benton and Yakima counties, and similarly dry parts of adjacent counties.

The palette of trees for these counties is smaller than it is elsewhere in Washington, yet there are a great many species of ornamental trees that can thrive in central Washington cities and towns. Read More "Trees for Central Washington"

Hot Off the Press!

PNW-ISA member Christina Pfeiffer of Seattle, WA has recently published an updated edition of her book, Pacific Northwest Month-by-Month Gardening: What to Do Each Month to Have a Beautiful Garden All Year.

Notes Christina: “This practical guide has been updated with current information for maintaining beautiful and healthy gardens, tuned into important regional issues such as water conservation, and protecting pollinators. Arranged by month, each chapter cues into the seasonal rhythms and life cycles in the garden and the timely tasks that go along them. When we can work in sync with nature, caring for the garden becomes more of a pleasing journey, and less of a battle. And as with the first edition, this book offered me an opportunity to include accurate and up-to-date information on tree care and hiring Certified Arborists that is so often missing in general garden guides for the public.”

In Memoriam: Cass Turnbull and Mike Bowman

Cass Turnbull

February 7, 1951 – January 26, 2017

In late January, we were all saddened to learn of the sudden and unexpected death of well-known PlantAmnesty founder Cass Turnbull. While vacationing in Hawaii with her husband, she suffered a fatal heart attack after a swim. Cass was the power, the energy, the humor, and the magic behind PlantAmnesty, a long-time member of ISA and the PNW Chapter, and she will be missed by all who knew her.

PlantAmnesty is organizing a public celebration of her life called “The Life and Times of Cass Turnbull” at 1 PM on Saturday, March 25, 2017 at Shoreline Community College Theater in Shoreline, WA. Further information can be found at

Read More "In Memoriam: Cass Turnbull and Mike Bowman"

Grove of the States Arborist Work Day

group photo of On November 11, 2016, a team of two dozen highly skilled volunteer arborists from four local companies sponsored a work day in Oregon’s Grove of the States to prepare the site for the next phase of its restoration.

Located at the southbound I-5 French Prairie Rest Area (at Milepost 281 near Wilsonville), the Grove is believed to be the oldest public arboretum of state trees in the US and was originally a collection of trees from 53 US states and territories. When the Grove was planted in 1967, planners did not provide enough space for the new trees to grow into their mature height. Over the years, some of the larger species and encroaching Douglas fir trees out-competed their neighbors for sunlight and many of the trees became diseased, unhealthy, or died.

Preparing for the Grove’s 50th anniversary in August 2017, the Oregon Travel Information Council (DBA Oregon Travel Experience) and its partners at the Oregon Department of Forestry, Friends of Trees, and other tree lovers have joined efforts to save the Grove for future generations. Read More "Grove of the States Arborist Work Day"