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Chinook Hops are one of several varieties of hops cultivated in the Pacific Northwest of the United States[2]
Chinook Hops are one of several varieties of hops cultivated in the Pacific Northwest of the United States[3]

The United States of America is the world's largest producer of hops, the flowers of female humulus lupus plants.[4] The primary use of hops grown in the United States is in brewing. In 2019, the U.S. accounted for 40% of world hop production and 39% of world hop acreage.[4]

A hopyard in Oregon

History edit

Dutch and English settlers of the New England colonies began importing hops for brewing and medicinal use as early as the 17th century.[5] The Massachusetts Company began commercially growing hops for colonial brewing in 1629.[6]European hop rhizomes were later brought to the west coast by Wilson G. Flint in 1850 during the California Gold Rushperiod.[7] Commercial hop production in California began in 1854 in order to satisfy growing demands brewers' growing demands given the large influx of immigrant miners and farmers that were settling in the state.[7]As the west coast hop industry began to grow at a rapid rate, hop production on the east coast began to centralize in New York in the 1880's.[5]However, it diminished at the hands of several waves of disease and reduced demand for hops as a result of prohibition.[8]Furthermore, hop growth nationwide faced a steep decline with prohibition, shrinking large growing regions into small pockets along the west coast, primarily in the Pacific Northwest.[9] Following the devastating effects of two world wars in Europe, American hop growers of the Pacific Northwest would reemerge as a main competitor in the world hop market.[5]

Production edit

United States hop production grew 5% from 2018 to 2019 reaching a record number of over 112 million pounds.[10]Production value was estimated to be worth more than 636 million dollars in 2019.[10]

Hop Production in the United States (lbs)[4]
State 2017 2018 2019
Washington 79,083,800 77,727,700 82,014,900
Idaho 14,067,300 16,242,800 17,003,100
Oregon 12,470,400 12,936,200 13,023,200
Other non PNW 1,875,000 1,500,000 1,000,000
Total 107,496,500 108,406,700 113,041,200

Production Methods edit

Hops grow on bines that may extend as high as 25 feet.[11] Hop bines are trained to wrap around strings or wires strung between trellises.[9] Following the harvest, hops are kilned before being pressed flat and compiled into bales.[9]

Agriculture edit

United States Hop Acreage[4]
State 2017 2018 2019
Washington 38,648 39,170 40,880
Idaho 7,125 8,140 8,358
Oregon 8,216 7,725 7,306
Other non PNW 2,503.5 2,433 2,386
Total 56,492.5 57,468 58,930

Hop farms in the Pacific Northwest region comprise approximately 96% of total United States hop acreage.[6] Optimal climate, availability of water, and proper soil type combine to make the Yakima Valley and other Northwestern regions ideal locations for growing hop bines.[6] Hops require large amounts of sunlight in order to grow effectively and thus grow best within the 30th and 50th parallels.[11] Many hop farms have been family owned and operated for several generations.[6]


One acre of hops consists of 889 plants, each of which can produce upwards of two pounds of cones.[6]


Hop acreage is categorized by alpha, aroma, and dual purpose type and further divided by varietals. Since 2011, aroma varietal acreage has increased at a rapid rate[4], likely due to the popularization of American IPA beer styles and an increased demand for new aroma profiles in beer.

Exportation edit

The United States exports hops worldwide. The largest importers of U.S. hops include Belgium, Canada, the United Kingdom, Germany, and Brazil.

Supply edit

Shortages edit

Hop supply is highly susceptible to water shortages and dramatic weather effects that may increase with climate change. As the demand for hops in craft beer has continued to rise, shortages and price fluctuations have occurred.[12][13]

Low crop yield in the 2006 harvest followed by the October 6th S.S. Steiner warehouse fire, which destroyed 4% of the United States' hop yield, led to a nationwide hop shortage that would continue for two years.[14] Followed by another poor yield in 2007, brewers were forced to adapt their brewing processes to less hop availability or pay greater prices in order to acquire hops.[15]

Hop Contracts edit

Hop farms and breweries commonly negotiate contracts in order to guarantee farm funding and brewing supply respectively for future years.[16]

Public Breeding Program edit

After a failed first attempt in 1908, the United States Department of Agriculture's Agricultural Research Service begin successfully developing hop cultivars at Oregon State University in 1931.[17] Researchers found American clustercultivars to lack hardiness and sought to breed a strain that could resist downy mildew.[17] From the parentage of British fuggle nd Russian Serebrianka hops, the program developed Cascade (1972), Willamette (1976), and multiple other successful hop varietals that would be utilized in the future craft brewing movement.[17][18] While "C-hop varietals" (Cascade, Chinook, Centennial, Columbus) that came from the breeding program were better suited to the growing conditions of the Pacific Northwest, their distinct citrus aroma was too fragrant for the likings of the dominant macro breweries.[18] Anchor Brewing Company and Sierra Nevada Brewing Company would both feature the publicly bred Cascade hops in their beers during the late 1970's and early 80's.[19][20] These new styles of American ales, defined by their unique hop aromas, would spark a craft beer movement fueled by the showcase of newly developed public hop cultivars.


In 2017 the American Brewers Association announced a joint research initiative with the USDA to fund the creation of new, public hop varietals with the goal of developing disease resistant and aromatic cultivars for the public domain.[21]Many popular aroma hop varietals, such as Mosaic®, Simcoe®, and Citra®, are privately owned. The Hops Breeding Program at Oregon State University currently conducts research on hop varietals in collaboration with the USDA hops breeding program and the Brewers Association. [22] The program released Triumph, a new public hop varietal, in 2018.[23][24]

Sustainability edit

Water Usage edit

It is estimated that 50 pints of water are needed to produce one pint of a hoppy beer style.[25] During peak growing period, hop bines can use more than three gallons of water per day, relying on effective irrigation methods in order to produce greater yields.[26] The majority of water use by hops occurs in late July to August, when the bines focus their energy on cone production.[27] Water sources that are naturally depleted during the summer may be further strained by the large volumes of water hop farmers require.[27] Drip irrigation systems have been employed in hop yards to increase water efficiency.[27]

Pesticides edit

Hop growers in the United States employ the use of a wide variety of pesticides in order to protect their crop from numerous forms of disease and predation. Powdery Mildew, Downy Mildew, Spider mites, and hop aphids are among many pests that negatively impact hop growth and output.[28] Fungicide use is perhaps the most common application of hop growers, with plants receiving on average 8.3 applications of a fungicide chemical per season.[29] The nonprofit trade group Hop Growers of America is an advocate for Integrated Pest Management practices in hop farming. IPM in hop growing involves using a scientifically informed rotation of pesticides, growing a diverse variety of disease resistant cultivars and practicing proper planting techniques to ensure minimal environmental and economic impact.[30] Idaho, Oregon, and Washington all have laws preventing importation of hop roots from outside of the Pacific Northwest in order to prevent the spread of disease and pests.[31]

A joint university study between Washington State University and University of California Davis found that remaining pesticide residues from hop flowers existed in beer while still well within safe range of the EPA's Accepted Daily Intake level.[32]

Other Research edit

Researchers at University of California Berkeley are experimenting with genetically modified strains of yeast that are able to synthesize the natural compounds responsible for hop aromas.[33] In a double-blind tasting test, genetically modified yeast beers were perceived as hoppier than traditionally dry-hopped beers.[34] Hop-aroma producing yeast might eliminate the hefty water and energy requirements for growing, drying and transporting aroma hops or mitigate the effects of supply shocks during poor harvest years.

Recent studies have shown hop growers may be able to bypass the winter dormancy period of hops by tricking plants with artificial grow lights. Growing hops indoors using hydroponics could allow for greater water efficiency, eliminate the need for pesticides and result in fresh hop availability year round.[35]

By State edit

Idaho edit

Idaho began producing hops in the 1950's.[11] The state of Idaho is home to the 1,700 acre Elk Mountain Farms owned by Anheuser-Busch. Elk-Mountain is one of the largest hop farms in the world.[36]

Oregon edit

The state of Oregon is home to the USDA-ARS public breeding program, credited with developing Cascade and other "c-hop" varietals.[17][18] Oregon hop production primarily occurs in the Willamette Valley region.[37] The city of Portland, Oregon is known for its wide availability of breweries.[38] The availability of fresh, local hops is one attribution for the successful Portland beer scene. [38]

Washington edit

Washington is the largest hop producer in the country.[4] Hops were first introduced to the Yakima Valley in the late nineteenth century, where farmers soon recognized their ability to flourish in the high desert climate.[5]

Other States. edit

As craft beer production increases[39], nontraditional regions are exploring the possibility of hop cultivation.[40] The number of American hop farms outside of the Pacific Northwest more than doubled from 2007 to 2012.[40]

California edit

While California hop production holds historical significance, modern production is miniscule. In 2019, California harvested 130 acres of hops, a small portion of the total U.S. production.[4] The California Cluster Hop was a varietal grown and used commonly in California during the pre-prohibition era. The varietal is experiencing a resurgence in part due to the budding craft beer industry.[41]

Nevada edit

The University of Nevada Reno has been experimenting with hop production in North and South Nevada since 2011.[42]In 2014, Reno nonprofit UrbanRoots, the government of Nevada, and University of Nevada Reno partnered to begin testing the viability of hop production in Nevada's high deserts.[42]

New York edit

The passing of the 2013 Farm Brewing Law in New York requires that 60% of each brewing ingredient in licensed farm breweries must be grown in New York State. This act has encouraged a resurgence in New York grown hops.[43][44]



The United States of America is the world's largest producer of hops, the flowers of female humulus lupus plants.[45] The primary use of hops grown in the United States is in brewing. In 2019, the U.S. accounted for 40% of world hop production and 39% of world hop acreage.[45]

History edit

Dutch and English settlers of New England began importing hops to the colonies for brewing and medicinal use as early as the 17th century.[46] The Massachusetts Company began commercially growing hops for colonial brewing in 1629.[47]European hop rhizomes were later brought to the west coast by Wilson G. Flint in 1850 during the California Gold Rushperiod.[48] Commercial hop production in California began in 1854 in order to satisfy growing demands brewers' growing demands given the large influx of immigrant miners and farmers that were settling in the state.[48]As the west coast hop industry began to grow at a rapid rate, hop production on the east coast began to centralize in New York in the 1880's.[46]However, it diminished at the hands of several waves of disease and the effects of prohibition.[49] Furthermore, hop growth nationwide faced a steep decline with prohibition, shrinking hopyards to small pockets on the west coast, primarily in the Pacific Northwest.[50] Following the devastating effects of two world wars in Europe, American hop growers would reemerge as a main competitor in the world hop market.[46]

Production edit

United States hop production grew 5% from 2018 to 2019 reaching a record number of over 112 million pounds.[51]Production value was estimated to be worth more than 636 million dollars in 2019.[51]

Hop Production in the United States (lbs)[45]
State 2017 2018 2019
Washington 79,083,800 77,727,700 82,014,900
Idaho 14,067,300 16,242,800 17,003,100
Oregon 12,470,400 12,936,200 13,023,200
Other non PNW 1,875,000 1,500,000 1,000,000
Total 107,496,500 108,406,700 113,041,200

Production Methods edit

Hops grow on bines that may extend as high as 25 feet.[52] Hop bines are trained to wrap around strings or wires strung between trellises.[50] Following the harvest, hops are kilned before being pressed flat and compiled into bales.[50]

Agriculture edit

United States Hop Acreage[45]
State 2017 2018 2019
Washington 38,648 39,170 40,880
Idaho 7,125 8,140 8,358
Oregon 8,216 7,725 7,306
Other non PNW 2,503.5 2,433 2,386
Total 56,492.5 57,468 58,930

Hop farms in the Pacific Northwest region comprise approximately 96% of total United States hop acreage.[47] Optimal climate, availability of water, and proper soil type combine to make the Yakima Valley and other Northwestern regions ideal locations for growing hop bines.[47] Hops require large amounts of sunlight in order to grow effectively and thus grow best within the 30th and 50th parallels.[52] Many hop farms have been family owned and operated for several generations.[47]


One acre of hops consists of 889 plants, each of which can produce upwards of two pounds of cones.[47]


Hop acreage is categorized by alpha, aroma, and dual purpose type and further divided by varietals. Since 2011, aroma varietal acreage has increased at a rapid rate[45], likely due to the popularization of American IPA beer styles and an increased demand for new aroma profiles in beer.

Exportation edit

The United States exports hops worldwide. The largest importers of U.S. hops include Belgium, Canada, the United Kingdom, Germany, and Brazil.

Supply edit

Shortages edit

Hop supply is highly susceptible to water shortages and dramatic weather effects that may increase with climate change. As the demand for hops in craft beer has continued to rise, shortages and price fluctuations have occurred.[53][54]

Low crop yield in the 2006 harvest followed by the October 6th S.S. Steiner warehouse fire, which destroyed 4% of the United States' hop yield, led to a nationwide hop shortage that would continue for two years.[55] Followed by another poor yield in 2007, brewers were forced to adapt their brewing processes to less hop availability or pay greater prices in order to acquire hops.[56]

Hop Contracts edit

Hop farms and breweries commonly negotiate contracts in order to guarantee farm funding and brewing supply respectively for future years.[57]

Public Breeding Program edit

After a failed first attempt in 1908, the United States Department of Agriculture's Agricultural Research Service begin successfully developing hop cultivars at Oregon State University in 1931.[58] Researchers found American clustercultivars to lack hardiness and sought to breed a strain that could resist downy mildew.[58] From the parentage of British fuggle nd Russian Serebrianka hops, researchers developed Cascade (1972), Willamette (1976), and multiple other successful hop varietals that would be utilized in the future craft brewing movement.[58][59] While "C-hop varietals" (Cascade, Chinook, Centennial, Columbus) that came from the breeding program were better suited to the growing conditions of the Pacific Northwest, their distinct citrus aroma was too fragrant for the likings of the dominant macro breweries.[59] Anchor Brewing Company and Sierra Nevada Brewing Company would both feature the publicly bred Cascade hops in their beers during the late 1970's and early 80's.[60][61] These new styles of American ales, defined by their unique hop aromas, would spark a craft beer movement fueled by the showcase of newly developed public hop cultivars.


In 2017 the American Brewers Association announced a joint research initiative with the USDA to fund the creation of new, public hop varietals with the goal of developing disease resistant and aromatic cultivars.[62] The Hops Breeding Program at Oregon State University currently conducts research on hop varietals in collaboration with the USDA hops breeding program. [63]

Sustainability edit

Water Usage edit

It is estimated that 50 pints of water are needed to produce one pint of a hoppy beer style.[64] During peak growing period, hop bines can use more than three gallons of water per day, relying on effective irrigation methods in order to produce greater yields.[65] The majority of water use by hops occurs in late July to August, when the bines focus their energy on cone production.[66] Water sources that are naturally depleted during the summer may be further strained by the large volumes of water hop farmers require.[66] Drip irrigation systems have been employed in hop yards to increase water efficiency.[66]

Pesticides edit

Hop growers in the United States employ the use of a wide variety of pesticides in order to protect their crop from numerous forms of disease and predation. Powdery Mildew, Downy Mildew, Spider mites, and hop aphids are among many pests that negatively impact hop growth and output.[67] Fungicide use is perhaps the most common application of hop growers, with plants receiving on average 8.3 applications of a fungicide chemical per season.[68] Idaho, Oregon, and Washington all have laws preventing importation of hop roots from outside of the Pacific Northwest in order to prevent spread of disease and pests.[69]


A joint university study between Washington State University and University of California Davis found that remaining pesticide residues from hop flowers existed in beer while still well within safe range of the EPA's Accepted Daily Intake level.[70]

Other Research edit

Researchers at University of California Berkeley are experimenting with genetically modified strains of yeast that are able to synthesize the natural compounds responsible for hop aromas.[71] In a double-blind tasting test, genetically modified yeast beers were perceived as hoppier than traditionally dry-hopped beers.

Recent studies have shown hop growers may be able to bypass the winter dormancy period of hops by tricking the plants with artificial light. Growing hops indoors using hydroponics could allow for greater water efficiency, eliminate the need for pesticides and result in fresh hop availability year round.[72]

By State edit

Idaho edit

Idaho began producing hops in the 1950's.[52] The state of Idaho is home to the 1,700 acre Elk Mountain Farms owned by Anheuser-Busch. Elk-Mountain is one of the largest hop farms in the world.[73]

Oregon edit


Washington edit

Hop plants were first introduced to the yakima valley in the late nineteenth century and flourishing in the high desert climate[46].

Other States. edit

As craft beer production increases[74], nontraditional regions are exploring the possibility of hop cultivation.[75] The number of American hop farms outside of the Pacific Northwest more than doubled from 2007 to 2012.[75]

California edit

While California hop production holds historical significance, modern production is miniscule. In 2019, California harvested 130 acres of hops, a small portion of the total U.S. production.[45] The California Cluster Hop was a varietal grown and used commonly in California during the pre-prohibition era. The varietal is experiencing a resurgence in part due to the budding craft beer industry.[76]

Nevada edit

The University of Nevada Reno has been experimenting with hop production in North and South Nevada since 2011.[77]In 2014, Reno nonprofit UrbanRoots, the government of Nevada, and University of Nevada Reno partnered to begin testing the viability of hop production in Nevada's high deserts.[77]

New York edit

The passing of the 2013 Farm Brewing Law in New York requires that 60% of each brewing ingredient in licensed farm breweries must be grown in New York State. This act has encouraged a resurgence in New York grown hops.[78][79]

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  26. ^ Nakawuka, Peters, Kenny, Walsh (2020-02-29). "Effect of deficit irrigation on yield quantity and quality, water productivity and economic returns of four cultivars of hops in the Yakima Valley, Washington State" (PDF). usahops.org.{{cite web}}: CS1 maint: multiple names: authors list (link) CS1 maint: url-status (link)
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  33. ^ Denby, Charles M.; Li, Rachel A.; Vu, Van T.; Costello, Zak; Lin, Weiyin; Chan, Leanne Jade G.; Williams, Joseph; Donaldson, Bryan; Bamforth, Charles W.; Petzold, Christopher J.; Scheller, Henrik V. (2018-03-20). "Industrial brewing yeast engineered for the production of primary flavor determinants in hopped beer". Nature Communications. 9 (1): 1–10. doi:10.1038/s41467-018-03293-x. ISSN 2041-1723.
  34. ^ Bland, Alastair (2014-04-04). "GMO Yeast Mimics Flavors Of Hops, But Will Craft Brewers Bite?". npr.org. Retrieved 2020-03-09.{{cite web}}: CS1 maint: url-status (link)
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  40. ^ a b Oatman, Maddie. "Growers are making bank on this green, fragrant bud. No, not that one". Mother Jones. Retrieved 2020-03-07.
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  44. ^ "New York Farm Breweries aren't About Location". CraftBeer.com. 2019-03-11. Retrieved 2020-03-07.
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  46. ^ a b c d Edmunson-Morton, Tiah. "What's the story of U.S. Hops and how do we save it?" (PDF). usahops.org. Retrieved 2020-02-29.{{cite web}}: CS1 maint: url-status (link)
  47. ^ a b c d e "Overview of the Hop Industry - Hop Growers of America". www.usahops.org. Retrieved 2020-02-11.
  48. ^ a b Parsons, James J. (July 1940). "Hops in Early California Agriculture". Agricultural History. 14: 110–116 – via JSTOR.
  49. ^ "USA Hops". web.archive.org. 2015-06-10. Retrieved 2020-02-29.
  50. ^ a b c "Hops", Wikipedia, 2020-02-25, retrieved 2020-02-29
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  52. ^ a b c "NCGR Corvallis - Humulus Germplasm : USDA ARS". www.ars.usda.gov. Retrieved 2020-03-09.
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  54. ^ "America's craft beer craze causing a hops shortage". www.cbsnews.com. Retrieved 2020-03-07.
  55. ^ "The Hop Pendulum: A History of the American Hops Market". Brewers Association. 2020-02-24. Retrieved 2020-03-07.
  56. ^ "The Hop Pendulum: A History of the American Hops Market". Brewers Association. 2020-02-24. Retrieved 2020-03-07.
  57. ^ Holl, John. "The Current State of Hops". brewingindustryguide.com. Retrieved 2020-03-08.{{cite web}}: CS1 maint: url-status (link)
  58. ^ a b c Darby, Peter (2005). "The History of Hop Breeding and Development". BreweryHistory.com. Retrieved 2020-03-08.{{cite web}}: CS1 maint: url-status (link)
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  65. ^ Nakawuka, Peters, Kenny, Walsh (2020-02-29). "Effect of deficit irrigation on yield quantity and quality, water productivity and economic returns of four cultivars of hops in the Yakima Valley, Washington State" (PDF). usahops.org.{{cite web}}: CS1 maint: multiple names: authors list (link) CS1 maint: url-status (link)
  66. ^ a b c Jackson, Daniel; Siegle, Laura; Scoggins, Holly. "Irrigation Considerations for Commercial Hop Producers" (PDF). vtechworks.lib.vt.edu. Retrieved 2020-03-06.{{cite web}}: CS1 maint: url-status (link)
  67. ^ "Field Guide for Integrated Pest Management in Hops" (PDF). USAHops.org.{{cite web}}: CS1 maint: url-status (link)
  68. ^ "Grants for hops and barley research in 2016 (and advice on getting one)". Craft Brewing Business. 2017-01-11. Retrieved 2020-03-01.
  69. ^ "Shipping of hop plants and planting material to the pacific northwest prohibited by quarantine". MSU Extension. Retrieved 2020-03-07.
  70. ^ "Fate of Pesticide Residues in Beer" (PDF).{{cite web}}: CS1 maint: url-status (link)
  71. ^ Denby, Charles M.; Li, Rachel A.; Vu, Van T.; Costello, Zak; Lin, Weiyin; Chan, Leanne Jade G.; Williams, Joseph; Donaldson, Bryan; Bamforth, Charles W.; Petzold, Christopher J.; Scheller, Henrik V. (2018-03-20). "Industrial brewing yeast engineered for the production of primary flavor determinants in hopped beer". Nature Communications. 9 (1): 1–10. doi:10.1038/s41467-018-03293-x. ISSN 2041-1723.
  72. ^ Bauerle, William L. (2019-11-05). "Disentangling photoperiod from hop vernalization and dormancy for global production and speed breeding". Scientific Reports. 9 (1): 1–8. doi:10.1038/s41598-019-52548-0. ISSN 2045-2322.
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  76. ^ "Hops Return to Pleasanton | Edible East Bay". Retrieved 2020-03-05.
  77. ^ a b "Hops farm in Reno plans for Nevada's craft beer future". Drinkable Reno. 2014-05-19. Retrieved 2020-03-07.
  78. ^ "Hop growers face challenges to meet rising brewery demands". CALS. 2017-11-30. Retrieved 2020-03-07.
  79. ^ "New York Farm Breweries aren't About Location". CraftBeer.com. 2019-03-11. Retrieved 2020-03-07.
















The United States of America is the world's largest producer of hops.[1] In 2019, the U.S. accounted for 40% of the world's hop production and 39% of world hop acreage.[1]

History edit

Dutch and English settlers of New England began importing hops for brewing and medicinal use as early as the 17th century.[2] Commercial hop production by the Massachusetts Company began in 1629.[3] European hop rhizomes were later brought to the west coast by Wilson G. Flint in 1850 during the California Gold Rush period.[4] Commercial hop production in California began in 1854 in order to satisfy growing demands brewers' growing demands given the large influx of immigrant miners and farmers that were settling in the state.[4]As the west coast hop industry began to grow at a rapid rate, hop production on the east coast began to centralize in New York in the 1880's.[2] However, it diminished at the hands of several waves of disease and the effects of prohibition.[5] Hop growth nationwide faced a steep decline with production shrinking to pockets on the west coast, primarily in the Pacific Northwest.[6] Following the devastating effects of two world wars in Europe, American hop growers would reemerge as a competitor in theworld hop market.[2]

Production edit

United States Hop Production grew 5% from 2018 to 2019 reaching a record number of over 112 million pounds.[7] Production value was estimated to be worth over 636 million dollars in 2019.[7]

Hop Production in the United States (lbs)[1]
State 2017 2018 2019
Washington 79,083,800 77,727,700 82,014,900
Idaho 14,067,300 16,242,800 17,003,100
Oregon 12,470,400 12,936,200 13,023,200
Other non PNW 1,875,000 1,500,000 1,000,000
Total 107,496,500 108,406,700 113,041,200


Agriculture edit

United States Hop Acreage[1]
State 2017 2018 2019
Washington 38,648 39,170 40,880
Idaho 7,125 8,140 8,358
Oregon 8,216 7,725 7,306
Other non PNW 2,503.5 2,433 2,386
Total 56,492.5 57,468 58,930

Hop farms in the Pacific Northwest region comprise approximately 96% of total United States hop acreage.[8]

Exportation edit

Subsidies edit

Value edit

By State edit

Idaho edit

The state of Idaho is home to Elk Mountain Farms. At 1,700 acres, Elk Mountain is one of the largest hop farms in the world.[9]

Oregon edit

In 1930, Oregon State University started a hop research program in order to combat mildew and other hop diseases.

Washington edit

Hop plants were first introduced to the yakima valley in the late nineteenth century and flourishing in the high desert climate[2].

Other States. edit

California edit

While California hop production holds historical significance, modern production is miniscule. In 2019, California harvested 130 acres of hops, a small portion of the total U.S. production.[1] The California Cluster Hop was a varietal grown and used commonly in California during the pre-prohibition era.[10]

Disease edit

Powdery Mildew, Downy Mildew, Spider mites, and hop aphids are among many organisms that negatively impact hop growth and output.[11] Idaho, Oregon, and Washington have enacted laws preventing importation of hop roots from outside of the Pacific Northwest in order to prevent spread of disease and pests.

Pesticide Use edit

Hop growers in the United States employ the use of a wide variety of pesticides in order to protect their crop from numerous forms of disease and predation. Fungicide use is perhaps the most common application of hop growers, with plants receiving on average 8.3 applications of a fungicide chemical per season.[12]

A joint university study between Washington State University and University of California Davis found that remaining pesticide residues from hop bines existed in beer, but were safe within the EPA's Accepted Daily Intake level.[13]

Research edit

In 2017 the Brewers Association announced a joint research initiative to fund the creation of new, public hop breeds that possess disease resistant and aromatic characteristics.

Water Usage edit

A single hop plant can use three gallons of water per day. Bines require sufficient irrigation and produce greater yields when provided with effective irrigation methods.[14]

  1. ^ a b c d e "2019 HGA Statistical Packet". USAHops.org. 2019. Retrieved 2020-02-10.{{cite web}}: CS1 maint: url-status (link)
  2. ^ a b c d Edmunson-Morton, Tiah. "What's the story of U.S. Hops and how do we save it?" (PDF). usahops.org. Retrieved 02/29/2020. {{cite web}}: Check date values in: |access-date= (help)CS1 maint: url-status (link)
  3. ^ "Overview of the Hop Industry - Hop Growers of America". www.usahops.org. Retrieved 2020-02-11.
  4. ^ a b Parsons, James J. (July 1940). "Hops in Early California Agriculture". Agricultural History. 14: 110–116 – via JSTOR.
  5. ^ "USA Hops". web.archive.org. 2015-06-10. Retrieved 2020-02-29.
  6. ^ "Hops", Wikipedia, 2020-02-25, retrieved 2020-02-29
  7. ^ a b National Agricultural Statistics Service (12/18/2019). "National Hop Report" (PDF). usahops.org. Retrieved 3/6/2020. {{cite web}}: Check date values in: |access-date= and |date= (help)CS1 maint: url-status (link)
  8. ^ "Overview of the Hop Industry - Hop Growers of America". www.usahops.org. Retrieved 2020-02-11.
  9. ^ "A Visit To Elk Mountain Farms, The World's Largest Hop Farm". brewpublic.com. Retrieved 2020-03-01.
  10. ^ "Hops Return to Pleasanton | Edible East Bay". Retrieved 2020-03-05.
  11. ^ "Field Guide for Integrated Pest Management in Hops" (PDF). USAHops.org.{{cite web}}: CS1 maint: url-status (link)
  12. ^ "Grants for hops and barley research in 2016 (and advice on getting one)". Craft Brewing Business. 2017-01-11. Retrieved 2020-03-01.
  13. ^ "Fate of Pesticide Residues in Beer" (PDF).{{cite web}}: CS1 maint: url-status (link)
  14. ^ Nakawuka, Peters, Kenny, Walsh (2/29/20). "Effect of deficit irrigation on yield quantity and quality, water productivity and economic returns of four cultivars of hops in the Yakima Valley, Washington State" (PDF). usahops.org. {{cite web}}: Check date values in: |date= (help)CS1 maint: multiple names: authors list (link) CS1 maint: url-status (link)