The white grape variety (also ES 422, Esprit) is a complex interspecific new breed between edelweiss x Villard Blanc, There are genes from eight vine species that are Vitis aestivalis. Vitis berlandieri. Vitis cinerea. Vitis labrusca. Vitis lincecumii. Vitis riparia. Vitis rupestris and Vitis vinifera, The intersection of hybrid took place by the breeder Elmer Swenson (1913-2004) on his farm at Osceola in Wisconsin, The variety protection was granted in 1984. The variety was crossing partner in the new breed Delisle, The early to mid-seasoning vine is resistant to frost to minus 29 degrees Celsius, but very prone to the real mildew, as well as moderately prone to Botrytis and downy mildew. It produces fruity white wines without (despite Labrusca genes) Foxton, The variety is also called table grape used. It is found in small quantities in the Midwest United States in the states Colorado and Iowa grown. In 2010, however, no stock was recorded (Kym Anderson ).
Source: Wine Grapes / J. Robinson, J. Harding, J. Vouillamoz / Penguin Books Ltd. 2012
Pictures: Ursula Bruehl, Doris Schneider, Julius Kühn Institute (JKI)