Roch E. Gaussoin, University of Nebraska-Lincoln, Lincoln, NE, William Berndt, Florida Gulf Coast University, Fort Myers, FL, Colm A. Dockrell, National Botanic Gardens, Teagasc College of Amenity Horticulture, Dublin, Ireland and Rhae A. Drijber, Department of Agronomy and Horticulture, University of Nebraska-Lincoln, Lincoln, NE