Bull thistle is native to Europe, western Asia, and North Africa. It probably was introduced in eastern North America during colonial times, as a contaminant in seed or ship ballast. It is now the most ...
Many of the invasive plant species introduced to the United States originated as garden plants. Learn what you need to know to prevent future invasions.
Linda R. McMahan, Joy Jones, Robert Emanuel |
Jul 2011 |
Extension Catalog publicationPeer reviewed (Orange level)
Discusses how to identify and control Pacific poison-oak and western poison-ivy, and how to prevent exposure to the plants' oily substance, urushiol, which can cause an allergic contact dermatitis.
Brooke Edmunds, Lauren Grand, Alicia Christiansen, Andy Hulting |
Nov 2022 |
Extension Catalog publicationPeer reviewed (Orange level)
A brief guide for anyone living near a vineyard to understand the damaging effects that common herbicides can have on grapevines. With the Oregon grape industry growing rapidly near urban boundaries throughout the ...
This publication offers an integrated approach to effective weed management in Christmas trees, incorporating diverse strategies and practices to keep weed populations off balance. It includes strategies for using ...
Ed Peachey, Chal Landgren, Tim Miller-Morgan |
Dec 2017 |
Extension Catalog publicationPeer reviewed (Orange level)
For farmers and livestock producers on the Oregon Coast, there are many resources available to battle weeds common to the area. Those resources can help identify weeds and offer strategies for controlling them.
Provides identification, life cycle, and management information for this parasitic weed that recently has become a problem in red clover seed production in Oregon.
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.