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Portland is a Sanctuary City
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Displaying 1 - 14 of 14
Celebrating Three Environmental Writers for Women's History Month
Get Involved with Urban Forestry
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Blog post
Published
Read about three books from female environmental writers for Women's History Month.
Deciding Where to Host Arbor Day
Get Involved with Urban Forestry
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Blog post
Updated
Learn about what went into choosing Arbor Day location for 2025.
Learn About Yard Tree Giveaway's Registration Ambassadors
Get Involved with Urban Forestry
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Blog post
Updated
Learn about what went into choosing this year's Arbor Day location.
Congrats to the Neighborhood Tree Stewards Class of 2025
Get Involved with Urban Forestry
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Blog post
Updated
See what Neighborhood Tree Stewards learned and experienced in this summer's class.
Urban Forestry Youth Conservation Crew Welcomes Director Long
Urban Forestry
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Blog post
Published
Tilia Trees in Portland, Aphids, and Pesticide Advisory
Urban Forestry
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Blog post
Published
Tilia is an important tree in Portland’s urban forest. They are adaptable trees that can thrive in a variety of conditions. However, many varieties are susceptible to aphids. There is an Oregon Pesticides Advisory about the use of noenicitinoid insecticides on Tilia trees.
Bronze Birch Borer
Urban Forestry
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Blog post
Published
Find information about the bronze birch borer insect pest.
Western Redcedar Dieback
Urban Forestry
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Blog post
Published
Researchers in Oregon and Washington are sounding the alarm about Western redcedar decline. There is some hope for the future of Western redcedar in western Oregon. Trees growing in wet areas, northern-facing slopes, and other places with plenty of water show less damage from heat and drought.
Meet Some of Our Favorite Heritage Trees
Get Involved with Urban Forestry
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Blog post
Published
Nomination for new Heritage Trees closes May 1, 2023. Read about some of the already recognized trees. Get inspired to nominate a special tree in your neighborhood.
Celebrate Asian American and Pacific Islander Heritage Month
Get Involved with Urban Forestry
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Blog post
Published
Celebrate Asian American and Pacific Islander (AAPI) Heritage Month with selected articles about AAPI communities and connecting with the natural world.
Tree Physiology Primer – All About Roots!
Get Involved with Urban Forestry
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Blog post
Published
A brief review of tree parts and how a tree functions.
Trees and Sidewalks - Healthy Roots, Healthy Tree
Get Involved with Urban Forestry
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Blog post
Published
Information on tree roots and sidewalks.
Californians in Oregon: How Do Sequoias and Redwoods Do in Portland?
Get Involved with Urban Forestry
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Blog post
Published
Giant sequoia and coast redwood trees are often found in California. They can also be found growing in Portland's urban forest.
12 Broadleaf Evergreen Street Trees You Should Plant
Get Involved with Urban Forestry
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Blog post
Published
Learn about a selection of trees that keep their leaves all year, and do well in Portland.