Working to protect and advocate for trees in urban Washington County
News & Events
How to Help
Tree care tips
Learn proper tree care, the right way to plant a tree, how to keep trees healthy, and more.
Emerald ash borer information
Emerald ash borers have made their way to Oregon and are expected to devastate our ash trees. Find out what to look for .
How to properly water your trees
As our summers get hotter and drier, it is even more important to make sure our trees can survive without stress.
Approved street trees for our region
The best street tree is one that fits well in the available space, or "right tree, right place." These trees have been selected to create a strong, healthy urban forest, and to fit within our street tree planting spaces.
Guide to invasive trees
Some trees are invasive, threatening the health of native habitats and humans, and adding to costs for public and private landowners.
Tree first aid after a storm
Our 2021 ice storm was a wake up call. If your tree has been affected by a storm, make sure you are making the best choices for your tree's survival.
Pruning to prevent storm damage
You can take preventative measures that will help your trees grow stronger and more resistant to storm damage.