USDA ACCESSION NO.: 21225
SELECTION: Seedling selection from a cross between the USDA breeding line 6619-04 and the USDA male 64028M made at Prosser, WA in 1974 by C. E. Zimmermann.
PEDIGREE: 6619-04 x 64028M; [Brewer's Gold2 x Fuggle-Fuggle S] x [Brewer's Gold2 x East Kent Golding - Bavarian Seedling]. Genetic composition is 3/4 Brewer's Gold, 3/32 Fuggle, 1/16 East Kent Golding, 1/32 Bavarian, and 1/16 unknown.
PRIMARY SITE: USDA World Hop Variety Collection, OSU East Farm
ORIGIN: Cross made at Prosser, WA, in 1974 by C. E. Zimmermann
DATE RECEIVED: Spring 1980
METHOD RECEIVED: Rhizomes
AVAILABILITY: Commercial cultivar, no restrictions
REFERENCES: Kenny, S. T., and C. E. Zimmermann. Registration of Olympic hop (Registration No. 14). Crop Sci. 24:618-619. 1984.
Romanko, R. R. In: Steiner's Guide to American Hops, 2nd. ed. 1986.
MATURITY: Medium to medium late ~
LEAF COLOR: Medium green
SEX: Female; produces some sterile male flowers in certain
DISEASES: Downy Mildew: moderately resistant
Verticillium wilt: resistant
Viruses: free of prunus necrotic ringspot and apple mosaic virus, carries hop mosaic and American hop latent virus
VIGOR: Very good
YIELD: 1600-2200 1bs/acre
SIDE ARM LENGTH: 18-36 inches
ALPHA ACIDS: 13.0 (5-year range: 10.6 to 13.8)
BETA ACIDS: 5.5% (5-year range: 3.8 to 6.1)
STORAGE STABILITY: Fair to good
OIL: 1.64 ml/100 g (5 year range: 0.86 to 2.55)
MAJOR TRAITS: High alpha-acids content
OTHER INFORMATION: Considered a super alpha hop by the trade. Primarily adapted to Washington. Does not produce well in Oregon. Accounted for about 1% of total U.S. production in 1986 (536 000 lbs): 1997 production: 249,500 lbs, all in Washington.