Landrace.wiki

The open database for landrace cannabis populations, their genetics and the traditional knowledge that sustains them.

Landrace.wiki is the open database for landrace cannabis—populations, their genetics, and the knowledge around them. Browse documented accessions, track conservation efforts, and contribute to preserving genetic diversity before it’s lost.

Landrace Cannabis Growing Region and Accession Map

Conservation overview

288

Known growing regions

128

Documented regions

1,450

Accessions · across 12 regions

Stable8
Vulnerable21
Endangered43
Critical89
Extinct127

Open dashboard | Browse regions | Browse accessions | Contribute data

Featured Growing Regions

Northeastern Thailand

Southeast Asia - Khorat Plateau

The Khorat Plateau NLD landrace growing corridor (Phu Phan and adjacent hills in particular) retains core Thai-stick genetics, but diversity is eroding rapidly; conservation and documentation are urgent. Functional extinction is imminent.

Critical 0 accessions

Profile coming soon

Northern Laos

Southeast Asia - Lao Highlands

Rugged northern Lao uplands with long-cycle landraces still in cultivation, but under intense pressure from development, eradication, hybrid introgression and cheap Thai cannabis flooding the market; documentation and conservation are urgent.

Critical 3 accessions

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Western Himalayas

South Asia - Western Himalayas

Western Himalayan charas heartland where cultivation of high elevation, late-finishing NLD landraces is a part of everyday village life; law enforcement is a cat-and-mouse routine and male culling adds steady pressure. Documentation and conservation are needed.

Vulnerable 156 accessions

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Featured Accessions

ZOM-2023-TH-001

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ZOM-2020-TH-001

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Profile coming soon

We are witnessing the rapid disappearance of traditional cultivation knowledge and genetic diversity in cannabis. These landrace populations represent thousands of years of natural and human selection, containing unique genetic traits and chemical profiles. Systematic documentation and conservation efforts can serve as a bridge—preserving irreplaceable genetic heritage while supporting traditional communities and advancing our understanding of this remarkable plant.

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Interactive MapsView documented sites on a map

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Landrace · Eastern Plains›North Bengal Plains›Jalpaiguri

Jalpaiguri General Population 2025 #7 is a domesticate landrace cannabis accession collected by Éloïse and Isabella of the Zomia Collective in West Bengal, India.

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History of Opium in Sri Lanka (Uragoda 1983)

"History of Opium in Sri Lanka" is a scholarly article by C.G. Uragoda, published in the journal Medical History (volume 27, pages 69–76) in January 1983 by Cambridge University Press. The article is an important secondary source for the history of opium and cannabis regulation in colonial Ceylon, providing documented citation chains to primary colonial government records across a period spanning the Dutch administration through the early twentieth century.

Uragoda traces regulation from the Dutch period (with opium imported from Surat and Bengal as recorded in Governor Van Goens's 1663 memoirs), through the establishment of the first licensed opium shop at Chilaw around 1850, to the Opium and Bhang Ordinance of 1867 which placed both substances under a licensed dealer system. Governor Sir West Ridgeway doubled the opium duty and banned the import of bang (ganja) in 1897, and parliamentary questioning in the House of Commons in 1907, including a reply from the young Winston Churchill as Under-Secretary of State for the Colonies, led to the appointment of the Allan Perry committee and the eventual closure of all opium shops. read more →

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NEWS

20 Jun 2026

Himachal Pradesh cabinet approves NDPS rules amendment for regulated medicinal cannabis cultivation

https://lawstreet.co/judiciary/himachal-pradesh-approves-regulated-cannabis-cultivation-for-medical-use

8 Jun 2026

Police and soldiers uproot 800 marijuana plants worth ₱150,000 in San Fernando, Bukidnon

https://newsinfo.inquirer.net/2243254/authorities-uproot-800-marijuana-plants-in-bukidnon-town

4 Jun 2026

Fiji Police destroy 47,397 cannabis plants in four operations in Cakaudrove

https://fijisun.com.fj/news/nation/police-seize-47m-worth-of-marijuana-in-north

18 May 2026

Police destroy 1.14 million marijuana plants worth ₱228M in Loccong, Tinglayan

https://www.manilatimes.net/2026/05/21/regions/kalinga-police-destroy-p228m-worth-of-marijuana-in-major-drug-operation/2348380

All news

RESEARCH

15 Jan 2026

Unraveling the Confusion of Flowering Types and Terminology in Cannabis sativa

https://journals.ashs.org/view/journals/hortsci/61/2/article-p396.xml

28 May 2025

Domesticated cannabinoid synthases amid a wild mosaic cannabis pangenome

https://www.nature.com/articles/s41586-025-09065-0

6 Feb 2025

Integrating target capture with whole genome sequencing of recent and natural history collections to explain the phylogeography of wild-growing and cultivated cannabis

https://nph.onlinelibrary.wiley.com/doi/10.1002/ppp3.70043

23 Jan 2025

Unveiling Cannabinoids and Terpenes Diversity in Cannabis sativa L. From Northern India for Future Breeding Strategies

https://onlinelibrary.wiley.com/doi/10.1002/cbdv.202402278

All research

ONGOING

Philippines eradication campaigns (2026)

Sri Lanka eradication campaigns (2026)

Indonesia eradication campaigns (2026)

Tripura eradication campaigns (2026)

All campaigns →

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