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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
- Stable8
- Vulnerable21
- Endangered43
- Critical89
- Extinct127
Featured Growing Regions
Northeastern Thailand
Southeast Asia - Khorat Plateau
NLD heartland under hybrid pressure; core accessions at risk.
Critical 0 accessions
Profile coming soon
Northern Laos
Southeast Asia - Lao Highlands
Remote highland valleys where farmers maintain ancient landraces amid rugged karst and sandstone massifs..
Critical 3 accessions
Western Himalayas
South Asia - Western Himalayas
High-elevation charas region; tourist hybrids increasing introgression risk.
Vulnerable 156 accessions
Featured Accessions
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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.
Explore the Database
ZOM-THA-001-0020210003
Tanaosri 'Red Star' General Population 2021 is a landrace cannabis accession documented by the Zomia Collective in Thailand.
An Historical Relation of the Island Ceylon (Knox 1681)
An Historical Relation of the Island Ceylon, in the East Indies is a book by Robert Knox (1641–1720), published in London in 1681 by Richard Chiswell, the printer to the Royal Society. The book describes Knox's nineteen years of captivity in the Kingdom of Kandy (1660–1679) and contains the earliest known account by an Englishman of using cannabis medicinally in Ceylon. Knox's sample of the plant, which he called bangue or Indian hemp, was later the subject of the first controlled experiment with cannabis in European scientific history, conducted by Robert Hooke at the Royal Society in December 1689.
The cannabis passage appears in Knox's account of his escape attempts of the 1670s. He describes the dried leaf beaten to powder with jaggery and eaten on an empty stomach as an antidote to the fevers and ague caused by drinking from stagnant cattle ponds. Knox records the plant under the Portuguese-derived name banga (from bhang), indicating that it was widely enough known in the Kandyan kingdom for him and his companion to readily obtain and learn to use it. Together with the brief mention of "a little hemp" by the Portuguese Jesuit Fernão de Queyroz, the Relation is one of the two principal European accounts of cannabis use in seventeenth-century Ceylon. read more →
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2 July 2026
| N 00:54 | News:2026-06-08/Enforcement/police-and-soldiers-uproot-800-marijuana-plants-worth-150-000-in-san-fernando-bukidnon diffhist +2,695 Eloise Zomia talk contribs (Batch upload: Philippines enforcement news items (Kalinga; Bukidnon)) | ||||
| N 00:53 | News:2026-05-18/Enforcement/police-destroy-1-14-million-marijuana-plants-worth-228m-in-loccong-tinglayan diffhist +2,118 Eloise Zomia talk contribs (Batch upload: Philippines enforcement news items (Kalinga; Bukidnon)) | ||||
1 July 2026
| N 19:54 | News:2026-06-04/Enforcement/fiji-police-destroy-47-397-cannabis-plants-in-four-operations-in-cakaudrove diffhist +3,225 Eloise Zomia talk contribs (Create news item: Fiji Police report to Cakaudrove Provincial Council, four eradication operations; coordinates = Natewa Peninsula district centroid) | ||||
| 18:45 | News:2023-12-22/Enforcement/large-scale-ganja-farm-raided-in-yala diffhist +1 Eloise Zomia talk contribs (Migrate Has hectares destroyed -> Has hectares eradicated per schema ruling 2026-07-01) | ||||
| 18:38 | News:2026-04-29/Enforcement/aceh-police-discover-20-hectare-marijuana-plantation diffhist +31 Eloise Zomia talk contribs (Backfill enforcement SMW (agency / plants / hectares eradicated) per schema ruling 2026-07-01) | ||||
| 18:38 | News:2026-04-24/Enforcement/polda-sumsel-destroys-20-hectare-empat-lawang-cannabis-network diffhist +32 Eloise Zomia talk contribs (Backfill enforcement SMW (agency / plants / hectares eradicated) per schema ruling 2026-07-01) | ||||
| 18:38 | News:2026-04-19/Enforcement/police-destroy-60-000-marijuana-plants-along-sadanga-tinglayan-boundary diffhist +123 Eloise Zomia talk contribs (Backfill enforcement SMW (agency / plants / hectares eradicated) per schema ruling 2026-07-01) | ||||
| 18:38 | News:2026-04-19/Enforcement/police-destroy-6-000-marijuana-plants-in-loccong-tinglayan diffhist +32 Eloise Zomia talk contribs (Backfill enforcement SMW (agency / plants / hectares eradicated) per schema ruling 2026-07-01) | ||||
| 18:38 | News:2026-04-19/Enforcement/pnp-destroys-25-7m-worth-of-marijuana-in-22-cordillera-operations-13-19-april-2026 diffhist +55 Eloise Zomia talk contribs (Backfill enforcement SMW (agency / plants / hectares eradicated) per schema ruling 2026-07-01) | ||||
| 18:38 | News:2026-04-19/Enforcement/oplan-ultimate-grasscutter-destroys-6-300-marijuana-plants-across-11-sites-in-bakun-kapangan-kibungan diffhist +32 Eloise Zomia talk contribs (Backfill enforcement SMW (agency / plants / hectares eradicated) per schema ruling 2026-07-01) | ||||