Mallory Pratt 10/18/22 Mallory Pratt 10/18/22

Finding the Tree Within

With careful cuts, Jim Gersbach brought a Persian Ironwood back to life.

Rebecca O'Neil 10/3/22 Rebecca O'Neil 10/3/22

Free Neighborhood Tree Pruning

Be a part of street tree pruning this fall

Rebecca O'Neil 9/26/22 Rebecca O'Neil 9/26/22

Heritage Trees — a Special Designation

Learn more about Heritage Trees and help find more trees deserving of designation

Rebecca O'Neil 8/2/22 Rebecca O'Neil 8/2/22

Thirsty Trees in the Summer Heat

Water Arboretum trees in the dry hot spells

Jim Gersbach 7/20/22 Jim Gersbach 7/20/22

Ash Tree-Killing Insect Now in Forest Grove

Emerald Ash Borer is an insect that is known to destroy ash trees and it has now been seen in the Portland area.

Rebecca O'Neil 7/14/22 Rebecca O'Neil 7/14/22

Concordia Tree Inventory Event: Saturday July 16

Rebecca O'Neil 5/1/22 Rebecca O'Neil 5/1/22

Restarting the City Tree Inventory

Street Tree Inventory starting again in July 2022

Rebecca O'Neil 4/25/22 Rebecca O'Neil 4/25/22

GREAT Arboretum Walk, plus Tree Care 101

Neighbors showed up to connect with their trees!

Jim Gersbach 3/25/22 Jim Gersbach 3/25/22

Saturday, April 16 Walk in the Arboretum

Walk with us among the trees — April 16 2022, 9am

Jim Gersbach 3/22/22 Jim Gersbach 3/22/22

Renewal in the Linear Arboretum

New trees arrived in March 2022!

Rebecca O'Neil 2/5/22 Rebecca O'Neil 2/5/22

Ode to the Black Hawthorn

Love it or hate it? Ode to the Black Hawthorn

Rebecca O'Neil 10/3/21 Rebecca O'Neil 10/3/21

All about the Ainsworth Habitat Corridor

Rebecca O'Neil 8/6/21 Rebecca O'Neil 8/6/21

Catalpa catalpa catalpa!

Rebecca O'Neil 7/1/21 Rebecca O'Neil 7/1/21

To my neighbors

What’s New: New Roots