For 70 years, people have turned to one book to learn about Northwest trees. This edition expands its scope, covering even more species of trees — including several rare species native to southwest Oregon. It also updates scientific names and adds a new section on how Northwest forests are likely to be affected by changing climates.
The Oregon Department of Forestry and Oregon Department of Agriculture outline important steps, highlight tools and resources already available, and guide the state’s approach to handling an emerald ash borer (EAB) infestation at all stages.
Mar 2021 |
Credit: Oregon Department of Agriculture (Cropped from original)
There are many bright metallic-green insects, but the emerald ash borer beetle is only a half-inch long and strictly associated with ash trees. Use the chart to help determine if EAB is present on your property.
In an ideal world, trees have been well pruned since planting, and only occasional maintenance pruning is needed. In reality, we often inherit mature trees in need of corrective pruning in order to serve their best function ...
What a “volunteer” tree is in a landscape, its merits, and how it can be salvaged for a more attractive profile. With Oregon State University Extension’s Nicole Sanchez and certified arborists John Bellon and Tom Ford.
Ask an Expert is a way for you to get answers from the Oregon State University Extension Service. We have experts in family and health, community development, food and agriculture, coastal issues, forestry, programs for young people, and gardening.