California Polytechnic State University
San Luis Obispo, CA
Web: Click for Site

CO State Univ. Trial Gardens
Fort Collins, Colorado
Web: Click for Site

Cornell Long Island
Riverhead, NY
Web: Click for Site

Cornell University Trial Gardens
Ithaca, NY
Web: Click for Site

Costa Farms
Miami, FL
Web: Click for Site

D.S. Cole Growers
Loudon, NH
Web: Click for Site

Dallas Arboretum
Dallas, Texas
Web: Click for Site

Denver Botanic Gardens
Denver, CO
Web: Click for Site

Jardin Daniel A. Sequin
St. Hyacinthe, Quebec
Web: Click for Site

JC Raulston Arboretum
Raleigh, NC
Web: Click for Site

Kansas State University
Olathe, KS
Web: Click for Site

LSU Ag Center
Baton Rouge, LA
Web: Click for Site

Massachusetts Horticulture Society
Wellesley, MA
Web: Click for Site

Michigan State University Horticulture Gardens
East Lansing, MI
Web: Click for Site
Hardiness Zone: 5-6

Miles C. Hartley Selections Gardens/University of Illinois
Urbana, Illinois
Web: Click for Site
Hardiness Zone: 5-6

Mississippi State Trial Gardens
Biloxi, MS
Web: Click for Site

Mississippi State University-South Mississippi
Web: Click for Site

Ohio State University Cultivar Trials
Columbus, OH
Web: Click for Site

OSU Extension
Columbus, Ohio
Web: Click for Site

Penn State Trial Gardens
Manheim, PA
Web: Click for Site

Raker Trial Gardens
Litchfield, MI
Web: Click for Site

Rotary Botanical Gardens
Janesville, WI
Web: Click for Site

Texas A&M AgriLife Research and Extension Center at Overton
Overton, TX
Web: Click for Site

The Trial Gardens at UGA
Athens, Georgia
Web: Click for Site

University of Guelph
Guelph, Ontario
Web: Click for Site

University of Minnesota West Central Reasearch and Outreach Center
Morris, MN
Web: Click for Site

University of Tennessee Trial Gardens
Knoxville, TN
Web: Click for Site

University of Wisconsin Madison
Verona, WI
Web: Click for Site

Van Wingerden International inc.
Mills River, NC
Web: Click for Site

Walt Disney's Horticulture Bedding Plant Trials
Lake Buena Vista, FL
Hardiness Zone: 9-10