Alabama
Alabama Cooperative Extension System

Alaska
Alaska Cooperative Extension at University of Alaska - Fairbanks

Arizona
Arizona Cooperative Extension at University of Arizona

Arkansas
Arkansas Cooperative Extension at University of Arkansas

California
University of California Cooperative Extension

Colorado
Colorado State Cooperative Extension at Colorado State University

Connecticut
Cooperative Extension System at University of Connecticut

Delaware
Delaware Cooperative Extension at University of Delaware

Florida
Florida Cooperative Extension at University of Florida

Georgia
University of Georgia Cooperative Extension Service

Idaho
Cooperative Extension System at University of Idaho

Illinois
Illinois Cooperative Extension at University of Illinois

Indiana
Purdue University Cooperative Extensions Service

Iowa
Iowa State University Extension

Kansas
Kansas Cooperative Extension at Kansas State University

Kentucky
Cooperative Extension Service at University of Kentucky

Louisiana
Louisiana Cooperative Extension Service at Louisiana State University Agricultural Center

Maine
University of Maine Cooperative Extension

Maryland
Maryland Cooperative Extension Service at University of Maryland

Massachusetts
University of Massachusetts Extension at University of Massachusetts

Michigan
Michigan State University Extension

Minnesota
University of Minnesota Extension Service

Mississippi
Mississippi Cooperative Extension at Mississippi State University

Missouri
University of Missouri Extension

Montana
Montana State University Extension Service

Nebraska
University of Nebraska Cooperative Extension

New Hampshire
University of New Hampshire Cooperative Extension

New Jersey
Rutgers Cooperative Extension

New Mexico
New Mexico State University Cooperative Extension

New York
Cornell Cooperative Extension

North Carolina
North Carolina Cooperative Extension Service at North Carolina State University

North Dakota
North Dakota Cooperative Extension at North Dakota State University

Ohio
Ohio State University Extension Service

Oklahoma
Oklahoma Cooperative Extension Service at Oklahoma State University

Orgeon
Oregon Cooperative Extension at Oregon State University

Pennsylvania
Penn State Cooperative Extension

Rhode Island
Rhode Island Cooperative Extension at University of Rhode Island

South Carolina
Clemson Cooperative Extension

South Dakota
South Dakota State Cooperative Extension

Tennessee
Tennessee Agricultural Extension Service at University of Tennessee - Knoxville

Texas
Texas Agricultural Extension Service at Texas A&M University

Utah
Utah State Extension at Utah State University

Vermont
University of Vermont Extension Service

Virginia
Virginia Cooperative Extension at Virginia Polytechnic Institute and State University

Washington
Washington Cooperative Extension at Washington State University

West Virginia
West Virginia Extension Service at West Virginia University

Wisconsin
Wisconsin Cooperative Extension at University of Wisconsin - Madison

Wyoming
Wyoming Cooperative Extension at University of Wyoming