Urban Forestry

Featured Resources

Invasive Weeds in Forestland: English Ivy

Management options for English ivy in forest land: biological, chemical, and mechanical controls, plus grazing. Includes description of weed and its life cycle, history of infestation in the U.S. and West, and sources of more information.

OSU Extension Catalog

Invasive Weeds in Forestland: Himalayan & Evergreen Blackberry

Management options for Himalayan and evergreen blackberry in forest land: preventive steps, biological, chemical, and mechanical controls, plus grazing. Includes description of weeds and their life cycle, history of infestation in the U.S. and West, and sources of more information.

OSU Extension Catalog

What's killed my tree?

Are you one of the many woodland owners noticing continued signs of drought on your property? Drought impacts are complex; drought stressed trees become susceptible to insects and diseases that are naturally present (typically at low levels) in our woodlands. Take these four steps to help you identify what factors might be impacting your tree health.

By Norma Kline, | Article

Latest Resources

Tree School Clackamas teaches love for the land

Educational event draws hundreds from woodland community in Clackamas County and beyond.

By Glenn Ahrens, Rose Clarke, Michael Bondi, Kimberly Jacobsen Nelson | Article

Tree Pruning Basics

A properly pruned tree looks as natural as possible; that is to say, the tree’s appearance reflects its fundamental form and character. The pruner must be sensitive to maintaining this structural integrity, in addition to knowing a bit about tree biology and proper pruning principles!

Article

Can you identify this black and white bug?

I have lived in Oregon all my life and never seen this kind of bug before, what is it? It's not very fast moving, this one wasn't anyway.

By Jean R. Natter | Featured Question

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Latest News

Conifers naturally shed needles in summer and fall

Oct 7, 2016

You're not looking at the same needles over time

By Kym Pokorny | News Story

All News

Upcoming Events

Master Gardener Mobile Plant Clinic - Community Resilience Festival

Eugene, OR

Sat, Aug 24, 2019 11:00 am - 5:00 pm

OSU Extension Service Master Gardeners bring the Mobile Plant Clinic to Lane County locations and events to answer gardening questions. For more information or to schedule, call 541-344-5859.

Master Gardener Mobile Plant Clinic - Cottage Grove

Cottage Grove, OR

Thu, Aug 29, 2019 4:00 pm - 7:00 pm

OSU Extension Service Master Gardeners bring the Mobile Plant Clinic to Lane County locations and events to answer gardening questions. Master Gardener Volunteers help home gardeners diagnose plant...

Master Gardener Mobile Plant Clinic - Creswell

Creswell, OR

Sun, Sep 1, 2019 10:00 am - 3:00 pm

OSU Extension Service Lane County Mobile Plant Clinic OSU Extension Service Master Gardeners are available to bring the Mobile Plant Clinic to Lane County locations and events to answer gardening...

Meet Our Experts

Brooke Edmunds

Community Horticulture, Master Gardeners

Dan Leavell

Assistant Professor of Practice

Have a Question? Ask an Expert!

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.

Ask Us a Question

Can you identify this black and white bug?

I have lived in Oregon all my life and never seen this kind of bug before, what is it? It's not very fast moving, this one wasn't anyway.

By Jean R. Natter | Featured Question

See More Questions