Talk:Hemp
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Hemp is about cannabis grown for the fibre of its stem and for its seed: the names of the crop and its fibre, the plant as a crop, its history, the making of the fibre, the seed as food and oil, the landraces and old varieties, and the line that drug-control law draws between hemp and drug cannabis. The history is given in outline. Fuller regional accounts are on the country pages and on Cannabis in the Spanish Empire, Chilean hemp trade and Tochigi; the Soviet varieties are on Southern hemp and the pages for each variety; the name "Indian hemp" has its own page; seed dishes are on Cannabis cuisine. Other plants called hemp, such as abacá, sisal and jute, are named only in the section on names.
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Discussion
Sources
- The plant, the fibre and its processing: Lyster H. Dewey's article "Hemp" in the Yearbook of the Department of Agriculture 1913 (Washington, 1914, pp. 283–346) and Ernest Small and David Marcus, "Hemp: a new crop with new uses for North America" (2002), cited from the Purdue NewCROP web edition, which carries no page numbers. Flowering and fibre quality: Salentijn, Petit and Trindade (2019). Groups of domesticated plants, oilseed hemp and the 0.3 per cent THC line: Small (2018).
- The seed: Farinon and colleagues (2020) for its composition, with Small and Marcus for its history as oil and food.
- Landraces and cultivars: Etienne de Meijer's survey of fibre cultivars in the Journal of the International Hemp Association (1995), Paolo Ranalli (2004) on the Italian landraces and Takashima (1982) on the Tochigi landraces and 'Tochigishiro'.
- The word: the Anglo-Saxon Dictionary of Bosworth and Toller (online edition), John T. Koch's Celto-Germanic (2020, p. 39) and Michael Witzel (2003). Herodotus is cited in A. D. Godley's translation.
- The law: the Single Convention of 1961 and its Commentary of 1973 in the UNODC texts; the EU regulations of 2013 and 2021 on EUR-Lex; Canada's Industrial Hemp Regulations on Justice Laws; the United States public laws on govinfo.gov.
Source conflicts
- Protein in the seed. Small and Marcus (2002) give 25–30 per cent protein, about two-thirds of it edestin; Farinon and colleagues (2020) give 20–25 per cent for the whole seed, with edestin about 82 per cent of the protein.
- Hempseed oil. Small and Marcus call it a drying oil in one section and a semi-drying oil in another.
- The page range of Dewey (1913). De Meijer (1995) cites the article as pp. 283–316; the printed article runs to p. 346.
- The United States tax act. The Congressional Research Service and the page for the United States date the Marihuana Tax Act to 1937; Cherney and Small (2016) give 1938.
- Where hemp was domesticated. The genome study of Ren and colleagues (2021) places it in East Asia; later studies question its sampling and its grouping of the plants. The fuller discussion is on Domestication.
THC limits
- The European Union's limits govern which hemp areas qualify for payments under the common agricultural policy; the 0.2 per cent that Small (2018) gives for the Union was the limit then in force.
- The United States definition was rewritten by Pub. L. 119-37 of 12 November 2025, with effect 365 days after enactment, and its application was limited until 11 December 2026 by Pub. L. 119-103.