SELECTION: Originally selected in Czechoslovakia from a hop that has been grown in the area since the middle ages

GENUS: Humulus

SPECIES: lupulus

CULTIVAR: Saazer, also called Bohemian, Bohemian Red Hop, Zatezki poloranny zervenak (Saazer medium early red hop)

PEDIGREE: Unknown, appears to be related to Hersbrucker (USDA 21185) and Spalter (USDA 21186)

PRIMARY SITE: USDA-ARS World Hop Cultivar Collection, OSU East Farm

ORIGIN: Czechoslovakia

DATE RECEIVED: January 1973, Accession No. assigned in 1974


AVAILABILITY: No restrictions, commercial variety

REFERENCES: USDA Annual Reports of Hop Investigations 1973 (p. 7), 1974 (p. 20)


LEAF COLOR: Medium green

SEX: Female

DISEASES: Downy Mildew: moderately resistant

Verticillium Wilt: unknown

Viruses: carries prunus necrotic ringspot virus (apple strain)and hop Mosaic


VIGOR: poor, especially in early spring when sleepers (lack of growth) are common

YIELD: poor, less than 800 lbs/acre

SIDE ARM LENGTH: 6 - 10 inches, plants often fail to reach top of the trellis (18 ft)

ALPHA ACIDS: 4.3% (10 year range: 2.8 - 6.6)

BETA ACIDS: 3.6% (10 year range: 2.7 - 4.6)


STORAGE STABILITY: fair to good, retains 51% of the original alpha acids after 6 months room temperature storage

OIL: 0.62 ml/100 grams (7 year range: 0.30 - 1.07)

MAJOR TRAITS: very pleasant noble aroma suitable for production of super premium beers,

mild bitterness particularly suited for Pilsener-type beers

OTHER INFORMATION: Not grown commercially in the United States (except for northern Idaho) because of low yields Imported to the US in substantial quantities when available .Similar and perhaps identical to other Czech hops such as Osvald clone 72,USDA Nr. 21525 and 21532, Aromat, Sirem, Lucan, Blato,Zlatan and others. In 1990 Osvald Clone 72 (USDA 21535 and 21358) were established in northern Idaho (Bonners Ferry) for commercial production by Anheuser Busch Inc. (About 1200 acres in 1995).