Description:
Selected from NPGS accession W6 12028, which was donated to NPGS by the K. Malkov Agricultural Experiment Station of the Institute of Introduction and Plant Genetic Resources Center in Sadovo, Plovdiv, Bulgaria in 1987 under the cultivar name 'Webo'. WH-4 was the result of selecting for winter survival in five consecutive winter seasons under the natural winter conditions in Pullman, WA.