Ultra Rhizome

$6.50

A triploid seedling of the Hallertauer variety with good mid-season yield, good vigor that tends to produce a top-crop, moderately resistant to Downy Mildew and no major reactions to virus infection.

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Hop Qualities

Ultra Rhizome Flavor

A triploid aroma-type cultivar, originated in 1983 from a cross between the colchicine-induced tetraploid Hallertau mf (USDA 21397) and the diploid Saazer-derived male genotype (USDA 21237m). Ultra is the half-sister to Mount Hood, Liberty and Crystal. Its genetic composition is 4/6 Hallertau mf, 1/6 Saazer, and 1/6 unknown. This cultivar was released for commercial production in March, 1995. It has a peppery, spicy aroma similar to Saaz. Substitutes: Crystal, Saaz, Tettnanger. (Reference)

Hop Growers of America Information

Ultra was bred by U.S.D.A. from a tetraploid Hallertau mf cultivar and a Saazer-type male diploid genotype. It is a half-sister to Mt. Hood, Liberty, and Crystal. Ultra has a mild and pleasant Saaz-like aroma. It has very low alpha acids compared to most U.S. aroma varieties.
Acid Range (Alpha %)
2–3.5% 2–3.5%
Beta Range
3–4.5%
Cohumulone
23–38% of alpha acids
Total Oils
0.5–1 Mls. per 100 grams dried hops
Myrcene
15–25% of total oils
Caryophyllene
10–15% of total oils
Humulene
35–50% of total oils
Possible Substitutions

USDA Ultra Rhizome Information

USDA ACCESSION NO.: 21484
SELECTION: Seedling selection Nr. 8305-17 from cross 8305 made at Corvallis
OR in 1983.
GENUS: Humulus
SPECIES: lupulus
CULTIVAR: Ultra
PEDIGREE: USDA 21397 x 21373M
Tetraploid Hallertauer mittelfrueh x diploid Saazer- OP
4/6 Hallertauer mittelfrueh; 1/6 Saazer; 1/6 unknown
PRIMARY SITE: USDA-OSU experimental hop farm. East Farm, Corvallis OR.
ORIGIN: Cross 8305 made in1983. USDA Accession Nr. assigned in 1985
DATE RECEIVED: 1983
METHOD RECEIVED" seedling selection
AVAILABILITY: no restrictions, commercial cultivar released by USDA
REFERENCE: Alfred Haunold. Various USDA Annual reports starting in 1983.
Alfred Haunold. Various Reports to the Hop Research Council Starting about 1988
Haunold, G.B. Nickerson, U. Gampert, and D.S. Kling. 1997.
Registration of 'Ultra'Hop. Crop Science 37: 291 - 292. 1997.
MATURITY: medium late
LEAF COLOR: dark green
SEX: female
DISEASES: downwy mildew: moderately resistant
Verticillium wilt: moderately resistant
Viruses: free of all 5 major hop viruses at the time of its release (1995)
VIGOR: very good
YIELD: very good, 1,800 to 2,000 lbs/acre in Oregon and Washington;
not adapted to southern Idaho.
SIDE-ARM LENGTH: 24 to 36 inches
ALPHA ACIDS: 3 to 5%
BETA ACIDS: 4 to 5%
COHUMULONE: 25 to 30%
STORAGE STABILITY: good, similar to Fuggle (USDA 48209) or Willamette (USDA 21041)
OIL: 1.3 to 1.5 ml/100 g, somewhat higher than Hallertauer mittelfrueh. 30 - 40% humulene, 30% myrcene, 12 - 14% caryophyllene, no farnesene. This oil composition is nearly identical to that of Hallertaur mittelfrueh
MAJOR TRAITS: similar aroma profile to Hallertauer mittelfrueh; high yield potential
OTHER INFORMATION: This hop is a triploid, 2n= 30 and is nearly seedless even when grown in the presence of fertile male hops. Ultra is prized by craft brewers because of its Hallertauer -like aroma and pleasant bitterness.

Additional information

Weight2 oz
Dimensions5 × .5 × .5 in

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  • Rick Oftel

    Just wanted to thank you again for the extremely fresh and prompt shipment of my last order.
    Just last evening, I brewed up a German style lager using the N.Z. Hallertauer and Magnum whole hops.
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