Cluster Hops

Dual: Aroma and BitteringAlpha 5.5 - 9.0%United States

Cluster holds an unrivaled, legendary status as the literal foundation stone of American commercial hop agriculture, standing proudly as the oldest variety grown in the United States. Believed to have originated from a natural, spontaneous cross-pollination between an indigenous wild North American male hop and old-world European vines brought over by early Dutch and English colonists, it reigned supreme for generations. In its agricultural prime at the dawn of the 20th century, this incredibly resilient, high-yielding cultivar accounted for a staggering 96% of all domestic hop acreage, giving rise to regional offshoots like California Cluster and Yakima Cluster that remain largely indistinguishable from the master strain today. While modern super-alpha hybrids and flavor-forward varieties have since decreased its massive commercial footprint, Cluster remains an absolute icon of brewing history, highly prized by heritage craft brewers seeking an authentic, unadulterated link to classic American brewing traditions.

The sensory architecture of Cluster delivers a robust, old-school profile that beautifully prioritizes earthy, rustic, and clean botanical qualities over the aggressive tropical notes of modern craft hops. It presents a robust, comforting bouquet rich with deep garden soil, damp autumn wood, and wild field grass. This crisp, grounded quality is cleanly accented by a delicate layer of floral lavender, dried wildflowers, and a unique, dark-fruit undertone reminiscent of sweet blackcurrants and dried dark berries. Completely free from sharp resinous burn, heavy sulfur, or overbearing modern citrus, Cluster provides a beautifully balanced, clean perfume and a dependable bittering baseline that fills out the background of malt-forward worts and crisp heritage lagers perfectly.

Substitution Tip

If you can't find Cluster, the best alternatives are Chinook, Eroica, Galena, or Northern Brewer.

At A Glance

ProfileDeep Garden Soil, Wild Field Grass, Lavender, Ripe Black Currant, Dried Wildflower, Sweet Blackcurrant, Dried Dark Berries
PurposeDual: Aroma and Bittering
Alpha Acid5.5 - 9.0%
SubstitutesChinook, Eroica, Galena, Northern Brewer
Pairs withCascade (to blend classic American grapefruit zest with old-school herbal depth), Northern Brewer (to anchor a deeply rustic/woody/and mint-spicy structural foundation), Willamette (to soften the herbal bite with a round/delicate/British-leaning floral note)
Beer StylesAmerican Pre-Prohibition Lager, Cream Ale, California Common, Traditional Porter, Stout, Amber Ale, English Pale Ale

General Information

Country
United States
Aliases
Golden Cluster,Early Cluster,Late Cluster
Storage Stability
Retains 80 - 85% alpha acid

Brewing Chemistry (Acids & Oils)

Alpha Acid
5.5 - 9.0%
Beta Acid
4.5 - 6.0%
Cohumulone
36.0 - 42.0%
Total Oil
0.4 - 1.0 ml/100g
Myrcene
38.0 - 55.0%
Humulene
15.0 - 20.0%
Caryophyllene
6.0 - 10.0%
Farnesene
< 1.0%
Linalool
0.3 - 0.8%
B-Pinene
0.5 - 0.7%
Geraniol
0.6 - 0.9%
Xanthohumol
0.3 - 0.5%

Growth & Cultivation

Yield
1,420 - 2,100 lbs/acre
Maturity
Medium to Medium-Late Season
Resistant
Prunus Necrotic Ring-Spot Virus (PNRSV)
Tolerant
Verticillium Wilt
Susceptible
Downy Mildew, Powdery Mildew
Growth Rate
Very High / Exceptional Vigor
Cones
Medium-sized, highly compact, dense, and tightly clustered ovate structures.
Ease of Harvest
Difficult (its characteristic tight, clustered cone groupings on the bines can occasionally complicate clean machine stripping)
Sex
Female
Leaf Color
Medium to Deep Gren
Side Arm Length
24" - 36" (Medium to Long)

Cluster Aroma/Flavor Profile

Aroma
Flavor
CitrusTropical FruitStone FruitApple/PearMelonBerryFloralSpicy/HerbalPineResinGrassEarthy/WoodyOnion/GarlicDank/Catty

Discovery Tags

Last Updated
  • 2026-06-06 01:45:11