Weeds

Featured Resources

Weed, Poisonous Plant, and Pest Resources for Small Farms

These publications are shared to teach farmers and agriculturalists how to properly control weeds and poisonous plants and pests. Handbooks and management fact-sheets are provided as well as a list of common pasture weeds, poisonous plants, and other pests that affect pastures.

Collection

Weed Management in Conventional and Organic Snap Beans in Western Oregon

Discusses weed prevention and management in conventional and organic snap bean production.

By Ed Peachey | OSU Extension Catalog

Latest Resources

Basic Weed Science and Management

Weed biology and ecology, functional groups of weeds, and introduction to weed control strategies

By Pami Monnette, Chris Cornwell | Presentation

Managing Weeds

Weed identification, prevention, and management.

By Pami Monnette, | Presentation

Leaf Identification Key

Guide to identifying plants by leaf shape, margin, and venation.

Educational Document

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Latest News

Roll up your sleeves: Invasive weeds need persistence to control

Feb 23, 2018

Invasive weeds enter backyards in multiple ways and once there can cause havoc.

By Kym Pokorny | News Story

A prickly problem: Russian thistle populations in northeastern Oregon resist glyphosate

Mar 14, 2017

Wheat farmers rely extensively on the herbicide to control the weed

By Chris Branam | News Story

How to manage three common weeds in the vegetable garden

Jul 26, 2013

Knowing more about weeds can give gardeners a leg up in the fight, said Ed Peachey, weed specialist for the Oregon State University Extension Service.

News Story

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Upcoming Events

Hood River, OR

Hood River Extension Office Plant Clinic

Thu, Jul 25, 2019 1:00 pm - 4:00 pm

Have a gardening problem that you would like advice on how to solve? A bug that you would like to know what it is and if it's a pest or a beneficial? Stop by the OSU Extension Service Office in Hood...

Hood River, OR

Ace Hardware Plant Clinic-Hood River

Sat, Jul 27, 2019 9:00 am - 1:00 pm

Have a gardening problem that you would like advice on how to solve? A bug that you would like to know what it is and if it's a pest or a beneficial? Stop by Ace Hardware in Hood River on the second -...

White Salmon, WA

Ace Hardware Plant Clinic-White Salmon

Sat, Aug 3, 2019 9:00 am - 1:00 pm

Have a gardening problem that you would like advice on how to solve? A bug that you would like to know what it is and if it's a pest or a beneficial? Stop by the OSU Extension Service Plant Clinic...

Meet Our Experts

Judit Barroso

Weed Science

Cassie Bouska

Agriculture

Brooke Edmunds

Community Horticulture/Master Gardeners

Jessica Green

Senior Research Assistant

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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Is Crossbow a good choice for killing wild blackberries?

I can find lots of information on what Crossbow kills but no specific information on how it does it. I am trying to kill wild blackberries. My yard is in a condo development and is right next to my neighbor who does not like herbicides. She tells me that if I spray the blackberries that are next to...

By Kaci Buhl, | Featured Question

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