is a triploid aroma hop cultivar having 30 chromosomes, a type that produces very few seeds even when grown in the presence of fertile male hops.

Ultra originated from a 1983 cross made at Corvallis, Oregon, between tetraploid (2n = 40) Hallertauer Mittelfrüh and the diploid (2n = 20) male germplasm line 21373M. It was commercially released in 1995.

Ultra matures medium early and is moderately resistant to downy mildew and verticillium wilt. Its average yield is about 2,017 to 2,465 kg/ha (1,800 to 2,200 lb/acre). In many respects, Ultra resembles its female parent, Hallertauer Mittelfrueh. Its alpha acids content ranges from 4% to 6%, its beta acids ranges from 4% to 5%, and it has a cohumulone fraction of 21% to 25%. Its essential oils are divided among 35% myrcene, 38% humulene, and 11% caryophyllene. It has no farnesene. The humulene/caryophyllene ratio is 3.4, which some hop chemists consider to be indicative of continental-type aroma properties.

Although the development of Ultra was initially sponsored by major American breweries under the auspices of the Hop Research Council, this hop is today used mainly used by craft brewers who like it for its aroma quality.