Growth Rings

The Asian gypsy moth problem

Posted on February 5, 2016 at 12:52 pm

Clinton E Burfitt is the Program Manager with the Insect Pest Prevention and Management Program Plant Division, Oregon Department of Agriculture. He reached out to FOT to raise awareness about two upcoming events concerning the Asian gypsy moth. 

The Asian gypsy moth (Lymantria dispar asiatica) is a subspecies of the asian mothEuropean gypsy moth. Similar in most ways, the Asian gypsy moth comes equipped with two additional weapons under its belt: 1) a much broader host range (more than 500 trees and shrubs), and 2) the female moth’s ability to fly, enabling populations to expand quicker and farther than the European gypsy moth.

In 2015, this plant-eating invasive species, was detected in Portland’s Forest Park and in the northern part of the St Johns neighborhood. The moths were found in traps placed throughout the region by the Oregon Department of Agriculture.

Gypsy moths have a tremendous capability of increasing in population, which results in the destruction of urban and natural forests. Establishment of gypsy moth threatens forest ecosystems and results in long-term increases in the use of pesticides by homeowners.

An eradication plan is being developed for the north Portland area. It is proposed that about 8,000 acres would be treated with an aerial application of an organic biological pesticide Bacillus thuringiensis kurstaki this spring. High density trapping will follow to monitor the success of the eradication and to pinpoint any remaining populations.

Two public open-house events, coordinated by the Oregon Department of Agriculture and the Oregon Invasive Species Council, will be held to discuss the Asian gypsy moth eradication program. The goals of these events are to share information about the Asian gypsy moth, discuss the eradication proposal, and answer questions. Governmental and non-governmental agencies will be on hand. The events will be held at James John Elementary School, 7439 N. Charleston Ave, Portland, OR 97203. The first is February 17, 2016 from 6:30 pm to 8:30 pm & February 20, 2016 from 9:00 am to 12:00 pm.

For more information please visit the following web resources:

Oregon Department of Agriculture:

Oregon Invasive Species Council:


Thank You Volunteers!

Posted on February 2, 2016 at 2:13 pm

A video message from Friends of Trees Executive Director, Scott Fogarty.

Link to Volunteer Events 

Espalier with the Fruit Tree Project

Posted on January 27, 2016 at 9:09 am

Espalier Pruning & Training
Saturday January 30th, 10am – 1pm
SE Portland, Powellhurst-Gilbert neighborhood
This fun workshop will be an opportunity to learn what it takes to establish a proper espalier training system for your fruit tree and what pruning cuts you need to make to maintain that structure. You’ll also be able to gain some practice pruning on espaliered trees under skilled supervision at this event.

To attend this workshop we ask that you already have a basic understanding of pruning. If you do not have a basic understanding of pruning, please attend one of our Winter Pruning workshops.

About the instructor:

Ben Gibson has been working with trees since he was a skidder operator as a teenager. Since 2008, he has been working in the urban arboriculture field. He has taken on the roles of ISA Certified Climbing Arborist, Crew Lead, and Salesman. In April 2013, he started his own small business as “The Tree Nerd.” This allows his to focus on the beauty and long term health of trees. He specializes in ornamental pruning of all kinds, and is happy to share his passion and knowledge of trees with any who will listen.

The location address and other details will be provided after you register.

<<Click here to register now>>

3 Easy Steps to Becoming a Friends of Trees Crew Leader

Posted on January 13, 2016 at 4:02 pm

If the start of a new year has inspired you to make a real, lasting impact in your community, then you are in luck!

Educating our future generations about our local environment is another huge plus of being a Crew Leader with Friends of Trees!

Educating future generations about the local environment is just one perk of being a Crew Leader!

Friends of Trees is holding a Crew Leader training for our Green Space team this January 30th. Our Green Space program is focused on planting native trees and shrubs to restore watershed health and these community tree plantings occur in parks and natural areas across the greater Portland Metro region.  With over 50 planting events in the 2015-2016 season, we need the help of  trained Crew Leaders to ensure our events are both fulfilling and successful.  Space is limited, register HERE to claim your spot at this training in Tualatin, OR!

The Crew Leader role is a fun and rewarding way to connect with your community, learn about trees, and share the importance of a healthy urban forest. Not only will you learn how to plant a tree that will benefit our communities for decades to come, you will gain valuable leadership skills with the support of Friends of Trees staff.

Becoming a Friends of Trees Crew Leader is as easy as 1-2-3!

ONE: Aspiring Crew Leaders attend a ONE-day comprehensive training that covers everything from native plant and tree identification to planting day roles & responsibilities. It’s a great day where you can meet your Friends of Trees support staff, learn anything and everything about the Green Space program, and meet fellow Crew Leaders!

TWO-THREE: Following your 1-day training, we ask that you sign up for at least 2-3 Green Space planting events for the remainder of the 2015-2016 season. The Green Space team has 25+ future Saturday morning events scheduled across Washington, Multnomah, and Clackamas Counties and you will be free to sign-up for whichever events fit your schedule! At each event in your first season, we will partner you up with a seasoned Crew Leader so that you can build upon your training with on-site planting and group leading experience.

**Register here to save your spot!**

When: Saturday, January 30th, 9am – 3pm

Where: Brown’s Ferry Park Community Center, 6159 SW Nyberg Ln, Tualatin, OR 97062 (map)

What to expect: We’ll start the training with hands-on outdoor planting demonstrations and breakfast treats/coffee.  After finishing planting, we’ll break for a tasty lunch provided by Friends of Trees and the City of Tualatin. The afternoon will be spent in an indoor classroom session with presentations from Friends of Trees and City of Tualatin staff members, experienced crew leaders, and arborists to teach you everything you’ll need to know about this important role.  A coveted “Tree Team” tshirt will be provided at the end of the training.

Become a Friends of Tree Crew Leader and impress your friends with the new knowledge you will gain!

You’ll be the life of the party with all of the new knowledge you will gain!

If you have any questions or need more information about this role, please don’t hesitate to contact Jenny & Randi in the Volunteer & Outreach Program at 503-595-0213 or by emailing We look forward to working with you!

–Carey Lawry, Volunteer & Administrative Assistant