1. 1University of Wisconsin-River Falls, 410 South 3rd Street, River Falls, WI 54022
2. 2University of Minnesota Extension-Clay County, 715 11th Street North, Suite 107B, Moorhead, MN 56560
3. 3School of Agriculture, Texas A&M University – Commerce, P.O. Box 3011, Commerce, TX 75429
4. 4Horticulture Research Station, Iowa State University, 55519 170th Street, Ames, IA 50010
5. 5Kansas State University, John C. Pair Horticulture Center, 1901 East 95th Street South, Haysville, KS 67060
6. 6Houston Rose Society, 5020 Montrose Boulevard, 9th Floor, Houston, TX 77006
7. 7Texas A&M AgriLife Research and Extension Service, 17360 Coit Road, Dallas, TX 75252