Jack Herer

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Jack Herer
Jack Herer in Washington, DC, 1989
BornJune 18, 1939
Buffalo, NY, United States
DiedApril 15, 2010 (age 70)
Other namesThe Hemperor
OccupationGlobal Cannabis Community Founding Father, Front Line Freedom Fighter
Jack Herer and Dana Beal at the September 1989 Great Midwest Marijuana Harvest Fest in Madison, Wisconsin.

Jack Herer (/ˈhɛrər/; June 18, 1939 – April 15, 2010), sometimes called the "Emperor of Hemp", was an American cannabis rights activist and the author of The Emperor Wears No Clothes, a book—in 2020 in its fourteenth edition after having been continuously in print for 35 years—frequently cited in efforts to decriminalize and legalize cannabis and to expand the use of hemp for industrial use. Herer also founded and served as the director of the organization Help End Marijuana Prohibition (HEMP).[1] The Jack Herer Cup created by R. Foreman is held in Amsterdam, Jamaica, Las Vegas, Oklahoma City and Thailand each year to honor the Worldwide Cannabis Legalization Movement that Jack Herer helped start.[2]


An early glass pipe entrepreneur, opening his first head shop in 1973,[3] Herer was a pro-cannabis and hemp activist. There is a documentary made about his life called, "Emperor of Hemp," which aired on PBS stations throughout the U.S. and was translated into French and Spanish.[4]

As an activist he advocated for the decriminalization of the cannabis plant and argued that it could be used as a renewable source of fuel, medicine, food, fiber and paper/pulp and that it can be grown in virtually any part of the world for medicinal as well as economical purposes. He further asserted that the U.S. government has been deliberately hiding the proof of this from their own citizens.

A former Goldwater Republican, Herer ran for United States President twice, in 1988 (1,949 votes) and 1992 (3,875 votes) as the Grassroots Party candidate.



  • The Emperor Wears No Clothes (1985, 1990) [and online edition, text only]
  • G.R.A.S.S.: Great Revolutionary American Standard System [with Al Emmanuel] (1973)


  • "Cannabis Medicines Banned"
  • "Hemp For Victory Coverup"


A sativa-dominant hybrid strain of cannabis[5] has been named after Jack Herer in honor of his work. The Jack Herer strain was originally created by Sensi Seeds. Today almost all seed banks carry their own take on this famous cannabis favourite.[6] This strain has won several awards, including the 7th High Times Cannabis Cup. Jack Herer was also inducted into the Counterculture Hall of Fame at the 16th Cannabis Cup in recognition of his first book.[7]

Health problems[edit]

Herer speaking at the 2009 Hempstalk Festival, moments before his second heart attack

In July 2000, Herer suffered a minor heart attack and a major stroke, resulting in difficulties speaking and moving the right side of his body.[8] Herer mostly recovered, and claimed in May 2004 that treatment with the Amanita muscaria, a psychoactive mushroom, was the "secret".[9]

On September 12, 2009, Herer suffered another heart attack while backstage at the Hempstalk Festival in Portland, Oregon.[10]

He was discharged to another facility on October 13, 2009. Paul Stanford of The Hemp and Cannabis Foundation said "He is waking up and gazing appropriately when someone is talking... but he is not really communicating in any way."[11] On April 15, 2010, he died in Eugene, Oregon from complications related to the September 2009 heart attack. He was 70 years old at the time of his death.[12][13] Herer was buried at the Eden Memorial Park Cemetery in Mission Hills, California.


European experts on hemp, like Dr. Hayo M.G. van der Werf, author of the doctoral thesis Crop physiology of fibre hemp (1994), and Dr. Ivan Bûcsa criticized Herer for making unrealistic claims regarding the potential of hemp, compare L.H.Dewey (1943).[14]

  • Herer claimed that hemp produces higher yields than other crops. Van der Werf argued that is simply wrong. Under most favorable growing conditions, other crops such as maize, sugar beet or potato produced similar dry matter yields. Fiber hemp is in no way exceptional in terms of weight yield.[15]
  • Herer claimed that hemp hurds, which make up 60 to 80% of the stem dry weight, contain 77% cellulose. Van der Werf argued that is wrong. Cellulose content of hemp hurds has been found to vary between 32 and 38% (Bedetti and Ciaralli 1976, van der Werf 1994). Possibly, Herer confused the hurds, which form the woody core of the hemp stem, with the bark, which forms the outer layer of the hemp stem. The bark contains the long bast fibers which are used in textile manufacturing.[15]

See also[edit]


  1. ^ "Erowid Jack Herer Vault". erowid.org.
  2. ^ [1]
  3. ^ Selling Of Drug Paraphernalia Goes From Chic To Underground http://articles.chicagotribune.com/1989-09-05/news/8901100384_1_pipes-paraphernalia-head-shops
  4. ^ Snagfilms. "Watch "Emperor of Hemp" Full Documentary Online Free - Snagfilms". Snagfilms.
  5. ^ "Jack Herer", Sensi Seeds
  6. ^ Zamnesia blog, 2015 "Jack Herer cannabis strain review and infomration"
  7. ^ "History of the Cup" Archived March 24, 2012, at the Wayback Machine, Steven Hager, High Times Cannabis Cup, September 23, 2004.
  8. ^ "Jack Herer suffers heart attack" Archived September 27, 2007, at the Wayback Machine, Pete Brady, Cannabis Culture Magazine, July 20, 2000
  9. ^ "An Afternoon With Jack Herer" Archived September 30, 2007, at the Wayback Machine, Sean Luse, The Free Press, May 23, 2004
  10. ^ ""The Emperor Wears No Clothes" Marijuana Author Jack Herer Collapses After Stage Appearance at Portland Hempstalk". Cannabis Culture.
  11. ^ "Jack Herer Strives To Recover As The Fight For Hemp Goes On", Bonnie King, Salem-news.com , October 13, 2009
  12. ^ "The Hemperor, Jack Herer has Died", Bonnie King, Salem-news.com , April 15, 2010
  13. ^ Saker, Anne (April 15, 2010). "Jack Herer, father of marijuana legalization movement, dies at age 70 in Eugene". The Oregonian. Retrieved April 16, 2010.
  14. ^ Dewey LH (1943). "Fiber production in the western hemisphere". United States Printing Office, Washington. p. 67. Retrieved February 25, 2015.
  15. ^ a b "Archived copy". Archived from the original on July 13, 2013. Retrieved April 20, 2011.CS1 maint: archived copy as title (link)

External links[edit]