Ohio Perennial & Biennial Weed Guide - Purple Loosestrife
Ohio State University. Ohio Agricultural Research and Development Center.
Ohio State University. Ohio Agricultural Research and Development Center.
Ohio State University. Ohio Agricultural Research and Development Center.
Ohio State University. Ohio Agricultural Research and Development Center.
Ohio State University. Ohio Agricultural Research and Development Center.
Ohio State University. Ohio Agricultural Research and Development Center.
Ohio State University.
Ask an Expert is an online system for asking questions and receiving expert answers quickly on a broad range of subjects. We are pleased to provide university research-based information to help improve the quality of your life, family, garden, business or community! You may submit a question here to be answered by members of our Ohio State University Extension faculty/staff or our Master Gardener Volunteers.
Ohio State University Extension; Purdue University Extension; University of Illinois Extension.
The Weed Control Guide, a joint publication from the Cooperative Extension Services in Ohio, Indiana, and Illinois, explains the importance of weed control and gives suggestions on herbicide management strategies for corn, popcorn, sweet corn, soybeans, small grains, and forages.
Ohio State University. Extension.
Ohio State University. Extension.
Oahu Invasive Species Committee.
Oklahoma Invasive Plant Council.
Oklahoma Department of Agriculture, Food, and Forestry. Oklahoma Forestry Services.
Oklahoma Invasive Plant Council.
The Oklahoma Invasive Plant Council has developed a list of invasive plants by region. These plants have invasive qualities and are present in the region or neighboring regions. These are species that are not abundant yet in the area, but should be monitiored, reported and controlled before they become a bigger problem in the state.
Okoboji Protective Association.
Florida Invasive Species Council.
See also: Publications - Species Identification Guides for more resources
North American Invasive Species Management Association.
See also: Biocontrol Factsheets for more information on biocontrol agents
Washington State Recreation and Conservation Office. Washington Invasive Species Council.
On-demand webinars are archived recordings of previous webinars available 24/7 for viewing at your convenience. Recent webinars are available on this page, and additional archived webinars can be accessed on our YouTube playlist.
Ontario Invasive Plant Council.
Ontario Invasive Plant Council.
In recent years the Ontario Invasive Plant Council has developed Best Management Practices (BMPs) guides for more than 15 different invasive plants in Ontario. The BMPs provide you with a detailed background history on the plant, how to identify it and how to properly manage it. The series promotes the use of integrated pest management to achieve effective control.
Ontario Phragmites Working Group.