Muscatine Island Farm
In 2009, a sweet cherry tree cultivar trial was established to evaluate the suitability of new varieties for the home gardener in the Muscatine Island region. Seven varieties grafted onto Gisela® 5 rootstocks were planted in spring 2009. Gisela® 5 rootstock was chosen for its dwarfing ability (roughly 50 percent of Mazzard), virus resistance, and cold hardiness.
Iowa State University
Hannan, Joseph M., "Sweet Cherry Cultivar Trial" (2011). Iowa State Research Farm Progress Reports. 220.