Hops come from a climbing plant called Humulus lupulus, a member of the hemp family (Cannabaceae) that grows wild across much of the Northern Hemisphere. The plant is native to temperate regions of Europe, western Asia, and North America, where wild varieties still thrive along riverbanks and forest edges. Today, commercial hop production is concentrated in just a handful of regions, with Germany and the United States producing roughly 74% of the world’s supply.
The Hop Plant and Its Relatives
The hop plant is a perennial vine, technically called a “bine” because it wraps itself clockwise around supports using stiff hairs on its stem rather than tendrils. It belongs to the same botanical family as cannabis, though the two plants produce very different chemistry. Only the female hop plant produces the papery, cone-shaped flowers that brewers prize. Inside those cones sit tiny yellow glands called lupulin, which contain the resins and oils responsible for bitterness, aroma, and flavor in beer.
Three key classes of compounds live in those glands: bitter acids (which give beer its characteristic bite), essential oils (which contribute floral, citrus, or piney aromas), and flavonoids. The bitter acid content in hop cones ranges from about 0.5% to 23% of their dry weight depending on the variety, and this single number largely determines whether a cultivar is classified as an “aroma” hop or a “bittering” hop. The number and size of lupulin glands directly correlate with how much bitterness a cone delivers.
Where Hops Grow Wild
Wild hops are spread across Europe and North America. In North America alone, three native subspecies have been identified: one in the southwestern United States, one across the Midwest and upper Mississippi River valley, and a third stretching into eastern Canada. Researchers studying wild populations in Nova Scotia, New Brunswick, and Prince Edward Island found that most of those plants (about 63%) were the native North American subspecies, while some near old farmsteads turned out to be feral European hops, likely escapees from colonial-era gardens.
Wild hops differ from commercial varieties in interesting ways. The eastern Canadian populations, isolated from their central North American relatives by the Appalachian Mountains, have adapted to a wetter, cooler climate. They show unusual traits like elongated leaves, striped stems, and even salt water tolerance. Their bitter acid levels are also notably higher than wild hops found farther west, making them potentially valuable for breeding programs.
How Hops Made It Into Beer
The earliest documented hop cultivation dates to 736 A.D. in Bavaria. Before that, brewers used a mix of herbs and spices called “gruit” to flavor beer, but hops gradually won out because they added both flavor and a natural preservative quality. The first recorded hop production in America came in 1648 in Massachusetts, planted to supply the colonies’ first commercial brewery.
Why Hops Only Thrive in Certain Latitudes
Hops are short-day plants, meaning they flower when daylight hours drop below a critical threshold of about 15 to 16 hours. This photoperiod requirement limits commercial production to a band between 35° and 55° latitude, north or south of the equator. Within that range, the seasonal shift in day length triggers the plant to stop growing vertically and start producing cones.
That said, researchers in Florida have experimented with supplemental lighting to manipulate day length, enabling two growing seasons per year in subtropical climates. This remains experimental. The vast majority of the world’s hops still come from traditional temperate growing regions.
Top Hop-Producing Regions Today
Global hop production totaled about 108,000 tonnes in 2025, according to industry tracker BarthHaas. Germany leads the world at roughly 43,000 tonnes, followed by the United States at about 37,000 tonnes. The Czech Republic (nearly 7,000 tonnes), Poland (2,770 tonnes), and Slovenia (2,345 tonnes) round out the top five.
Within the United States, production is overwhelmingly concentrated in one place: the Yakima Valley of Washington state. This single valley contains about 75% of all U.S. hop acreage and produces over 77% of the country’s crop. Its combination of long summer days, dry heat, volcanic soil, and irrigation from the Yakima River creates near-ideal conditions. About two-thirds of the hops grown there are exported to breweries worldwide. Oregon and Idaho contribute most of the remaining U.S. production.
In Germany, the Hallertau region in Bavaria plays a similar dominant role, continuing a tradition that stretches back over 1,200 years.
Noble Hops and Modern Varieties
Hop varieties fall into distinct genetic lineages shaped by geography. Genetic analysis has identified four main ancestral groups: Noble, Central European, English, and American. Noble hops, the most traditional group, are prized for their mild, pleasant aromas and relatively low bitterness (around 3% to 6% alpha acids). Classic Noble varieties like Tettnanger and Saaz have been used for centuries in European lagers and pilsners.
Modern breeding has pushed in a different direction. A cultivar called Brewer’s Gold became the ancestor of most high-alpha (high-bitterness) hops worldwide, serving as the foundation for the punchy, resinous varieties that define American IPAs and pale ales. These newer cultivars can contain alpha acid levels above 15%, delivering far more bitterness per gram than their European ancestors. The craft beer boom of the past two decades has driven enormous demand for these aromatic, high-impact American-bred varieties like Cascade, Citra, and Simcoe.
From Field to Brewery
Hop bines are vigorous climbers, growing up to 25 feet in a single season on tall trellis systems. Commercial trellises typically stand between 12 and 18 feet high, with strings or wires running from ground level to overhead cables. Growers train multiple bines per hill to climb these supports.
Harvest happens once a year in late summer, typically August and September in the Northern Hemisphere. Workers or machines cut the bines at the base, then lower them from the trellis and transport them to a processing facility. There, mechanical harvesters use revolving wheels with serrated wire teeth to strip the cones from the stems and leaves. Forced air streams, sifting screens, and conveyor belts separate the cones from debris, followed by a round of hand-sorting to catch anything the machines missed.
Speed matters after picking. Freshly harvested hops begin losing quality within an hour if left in a sealed container, because heat causes sweating and oxidation. Cones are kept in breathable material like burlap until they reach the kiln, where they’re dried to a moisture content low enough for storage. Most dried hops are then compressed into pellets, which are easier to ship, store, and measure. A smaller portion is sold as whole-leaf hops or processed into liquid extracts. From there, they travel to breweries around the world, where they end up in everything from a Czech pilsner to an American double IPA.