Hortapharm B.V.

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HortaPharm B.V.
Industry Horticulture
Founded 1990
Founder David Paul Watson
Headquarters Amsterdam, Netherlands [1]
Products Cannabis based medicine extracts

HortaPharm B.V. is a cannabis research and development business in the Netherlands.[2]


The business was founded by David Paul Watson in 1990. He was soon joined by David W. Pate and eventually Robert C. Clarke. They obtained the first license issued by the Dutch government to permit a Cannabis research facility in the Netherlands. HortaPharm B.V. has a partnership with GW Pharmaceuticals to develop Cannabis varieties for the manufacture of pharmaceuticals.[3]


Using selective breeding and production control, HortaPharm created Cannabis strains that produce virtually single cannabinoids, approximately 98% tetrahydrocannabinol or cannabidiol, relative to the total of other cannabinoids present.[4]


  1. ^ http://www.ist-world.info/OrgUnitDetails.aspx?OrgUnitId=9ccecafe358b4c6891aef7b026d3e6f1
  2. ^ http://www.genetics.org/content/163/1/335.full.pdf+html The Inheritance of Chemical Phenotype in Cannabis sativa L.(HortaPharm B.V., 1075 VS, Amsterdam, The Netherlands)
  3. ^ http://www.gwpharm.com/23july1998.aspx Details released of collaboration between GW Pharmaceuticals and Hortapharm medicinal cannabis,
  4. ^ Janet E. Joy; Stanley J. Watson Jr.; John A. Benson Jr. (1999), Marijuana and Medicine, National Academies Press, ISBN 9780309071550