Synonym or cultivar number (also ES 1-63) for the grape variety Kay Gray; see there.
The white grape variety (also Elmer Swenson 1-63) is an interspecific new variety between Elmer Swenson 217 (Minnesota 78 x Golden Muscat) x Onaka (Beta x Salem). It was named after a friend of the breeder's family. It contains genes from Vitis...
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Andreas Essl
Autor, Modena