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.

Sep 2008 | 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.

Sep 2008 | 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 ...

Norma Kline | Jun 2018 | Article

Latest Resources

OSU Extension Gardening Q&A

This podcast features live question and answer sessions with Oregon State University Extension horticultural experts across the state.

Podcast

What's Wrong With My Tree?

Are you worried about a tree on your property? Oregon State University Extension Service Foresters help you learn about individual tree needs, how to detect and describe symptoms of poor tree health, and to decide whether you need to take further action.

Nicole Strong, Dave Shaw | Apr 2017 | Video

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Latest News

Conifers naturally shed needles in summer and fall

You're not looking at the same needles over time

Kym Pokorny | Oct 7, 2016 | News Story

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Upcoming Events

Jun 9

Tree School Online: Support Your Local Raptors

10:00 am - 11:30 am PDT Online

Jun 9

Tree School Online: Spacing and Thinning

10:00 am - 11:30 am PDT Online

Sep 26

Growing Grapes-Sustainable Gardening Series-Josephine County

1:00 pm - 2:00 pm Grants Pass, OR

Meet Our Experts

Signe Danler

Master Gardener Online Program Instructor

Contact for questions about Online Master Gardener and Home Horticulture program

Brooke Edmunds

Community Horticulture, Master Gardeners

Contact me with gardening questions from Linn or Benton counties

Dan Leavell

Assistant Professor of Practice

Erika Szonntag

Master Gardener Coordinator

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.

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Can you identify this black and white bug?

Q: 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.

A: View answer | View all featured questions

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