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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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Accessions, coloured by the status of their seed lots, with growing places and archaeological sites. Another 558 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.

1101Accessions shown

85Growing areas

44Growing regions

Seed lot status

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

364of the 1101 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

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Growing regionA broad ecological and cultural grouping

Growing areaA specific cultivation zone within a region

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Featured accessionDmitrieva s.n., Fedulev (1929)

Kazakhstan Collected 1929 Herbarium specimen

Dmitrieva s.n. is a herbarium accession of Cannabis sativa gathered on a fallow in the environs of the Fedulev settlement, in the Teplovsky raion of the Ural okrug of the Kazak ASSR, in today's western Kazakhstan, on 18 June 1929 by A. Dmitrieva of the Kazakhstan soil and botanical expedition. The Moscow University Herbarium holds the sheet as MW0818722.

CollectionHerbarium specimenHistorical

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Places

Featured growing regions and areas

Growing region

Fergana Valley

Uzbekistan, Tajikistan, Kyrgyzstan

The Fergana Valley and the mountains at its southern edge, in Kyrgyzstan, Uzbekistan and Tajikistan, where cannabis grows wild and is sown on household plots

Attappadi

Western Ghats · India

Balkh

Northern Afghanistan · Afghanistan

Bang Saphan

Western Thailand · Thailand

Bashkir Trans-Urals

Southern Urals · Russia

All 47 growing regions · All 94 growing areas

A small orange and red Shiva temple with a tiered roof, vegetation growing thickly in front of it

Picture of the day

Feral cannabis growing next to a Shiva mandir on the banks of the Torsha river.

West Bengal · Isabella, June 2025 · About this photograph

Featured article

Zhigancao tang (炙甘草湯, zhìgāncǎo tāng, "roasted liquorice decoction") is a decoction of Chinese medicine of nine drugs, one of them half a sheng of cannabis seed (麻仁). The Shanghan lun of Zhang Zhongjing gives it for a "knotted and intermittent" pulse (結代) with palpitations (心動悸) in cold damage, and gives it the second name fumai tang (複脈湯), "pulse-restoring decoction".

The Shanghan lun calls for four liang of roasted liquorice (甘草), three liang of sliced fresh ginger (生薑), two liang of ginseng (人參), three liang of peeled cinnamon twig (桂枝), one jin of fresh rehmannia root washed in wine (生地黃), two liang of donkey-hide gelatin (阿膠), half a jin of cored ophiopogon tuber (麥門冬), half a sheng of cannabis seed and 30 split jujubes (大棗). The eight drugs other than the gelatin are boiled in seven sheng of clear wine and eight of water down to three sheng. The liquid is strained, the gelatin melted into it, and one sheng is taken warm three times a day.

In Cheng Wuji's annotated edition the seed is mazi ren (麻子仁) and the ophiopogon half a sheng. His note groups the cannabis seed with the gelatin, the ophiopogon and the rehmannia as the sweet drugs that moisten the channels, nourish the blood and restore the pulse.

The Donguibogam of 1613 has the decoction as gugamchotang (灸甘草湯), made up as a single dose. In the gram weights of the Korean Traditional Knowledge Portal it is 7.5 g of roasted liquorice; 5.625 g each of cinnamon twig, cannabis seed (麻仁, main), ophiopogon and dried rehmannia parched in wine; and 3.75 g each of ginseng and beads of donkey-hide gelatin. They are decocted with five slices of fresh ginger and three jujubes in two parts of water to one of wine, reduced by half and strained. …

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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