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Landrace.wiki

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

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The landrace map

Accessions, coloured by the status of their seed lots, with growing places and archaeological sites. Another 581 accessions have no coordinates yet.

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Interactive map of landrace accessions, growing places and archaeological sites. It is unavailable here; browse the accession list instead.

1168Accessions shown

92Growing areas

45Growing regions

Seed lot status

UrgentAt riskSecureHeld in a genebank, not distributedNo data yet, or too little to rateWhat these mean

364of the 1168 accessions on this map have a seed lot rated Urgent. See which populations to grow out first

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An accession is a sample or observation recorded at a specific place and time.

All accessionsEvery documented sample and observation

ClassificationLandrace, feral, specimen and related accession types

CountryBrowse by country of origin

Growing regionA broad ecological and cultural grouping

Growing areaA specific cultivation zone within a region

AppellationA recognised name tied to place and tradition

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Featured accessionZOM-IND-HIM-1020250021

India Collected 2025 Landrace

Atolang General Population 2025 is a domesticate landrace cannabis accession collected by Éloïse and Gaetan of the Zomia Collective in Himachal Pradesh, India.

PopulationGeneral populationDioeciousShort-day

Recorded usesMultipurpose

CollectionSeedsPoint of Origin2025

Field cyclePlant March–MayHarvest September–December

PreservationZomia Genetic Library

View accession

Places

Featured growing regions and areas

Growing region

Novosibirsk Oblast

Russia

Novosibirsk Oblast on the plain between the Ob and the Irtysh, where wild hemp has been found and destroyed since 2003 and hemp is grown as a crop

Turkestan

Turkestan Region, Shymkent · Kazakhstan

Udawalawe

Southern Sri Lanka · Sri Lanka

Upper Doab

Uttar Pradesh · India

Upper Jaldhaka Valley

Eastern Himalayas · India

All 48 growing regions · All 101 growing areas

Picture of the day

Cannabis plants growing at the Krabangkham farm.

Éloïse · About this photograph

Featured article

William Richard Carles (1848–1929) was a British consular official in China and Korea. He went to China as a student interpreter in 1867 and was appointed provisional vice-consul for Korea in March 1884. His book Life in Corea (1888) describes his journeys in Korea in 1883 and 1884, during which he saw hemp grown as a field crop in the north and hempen cloth on sale in its markets. He collected plants in China and Korea. Viburnum carlesii was described in 1888 partly from a specimen he gathered in Korea. The Royal Botanic Garden Edinburgh holds a sheet of Cannabis sativa from his herbarium, gathered on the banks of the Peiho in June 1885. The Royal Botanic Gardens, Kew holds hemp fibre and cloth from Korea that he gave in November 1885.

His standard label name is W. R. Carles.

Carles was born in Warwick on 1 June 1848, the second son of the Reverend Charles Edward Carles, vicar of Haselor. He was educated at Marlborough College. In 1867 he went to China as a student interpreter in the British consular service.

Carles first went to Korea in a private party. He left Shanghai on 8 November 1883 and on 16 November set out from Seoul into the country. His report on the journey, through two of the central provinces, was presented to Parliament in March 1884.

On 17 March 1884 he was appointed provisional vice-consul for Korea, with William George Aston, the consul at Nagasaki, as provisional consul-general. From 27 September to 8 November 1884 he made an overland journey from Seoul to the north and back. His route ran by Song-do (Kaesong), Wi-ju (Uiju) on the Yalu, Ham-heung (Hamhung) and Gensan (Wonsan). …

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Research

Venue: Agriculture and Natural Resources

30 Sep 2026

Comparison of self-pollination and intercrossing for feminized seed production in Thai Hang Kra Rok cannabis (Cannabis sativa L.) landrace

Compares selfing with intercrossing for producing feminized seed from two Thai landrace accessions of Hang Kra Rok cannabis, one from Bangkok and one from Sakon Nakhon. Female cuttings were treated with colloidal silver to induce male flowers, and the progeny were grown in a plant factory with artificial lighting. Both selfed lines and the Sakon Nakhon by Bangkok cross gave 100% female plants, while the reciprocal cross produced one hermaphrodite (5.6%). Dry inflorescence weight did not differ between treatments. The Bangkok selfed line had the highest THC content at 6.58%. The plants were grown under artificial light, so the chemistry is not field chemistry.

Source

29 Sep 2026 · Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy

Tracing the roots of illicit Cannabis: A machine learning-assisted ATR-FTIR proof-of-concept study for geographical origin classification

Source

26 Sep 2026 · Transformation: Critical Perspectives on Southern Africa

Cross of Green: Substance and Value in South Africa's Shifting Cannabis Policy

Source

23 Sep 2026 · Journal of Ethnopharmacology

Standardized Curcuma longa–Cannabis sativa extract derived from a traditional Thai formulation for psoriasis: anti-inflammatory activity, keratinocyte modulation, and skin-targeted delivery

Source

20 Sep 2026 · Journal of Essential Oil Research

Dynamic changes in essential oil yield and terpenoid composition across growth stages in hemp cultivars