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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 571 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.

1144Accessions 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 1144 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

AppellationA recognised name tied to place and tradition

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Featured accessionHooker s.n., Marocco (1871)

Morocco Collected 1871 Herbarium specimen

Hooker s.n., Marocco is a herbarium accession of Cannabis sativa gathered in southern Morocco in 1871, during the journey of Joseph Dalton Hooker, John Ball and George Maw. The Royal Botanic Gardens, Kew holds the sheet as K001604462. Its printed label names the collector as Dr. Hooker, and a handwritten addition reads Hort. Marocco.

CollectionHerbarium specimenHistorical

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Places

Featured growing regions and areas

Growing region

Morogoro

Tanzania

Cannabis growing region in eastern Tanzania, approximately Morogoro Region, where the Drug Control and Enforcement Authority destroyed 1,165 acres of cannabis farms in 2024.

Provincia de Ocaña

Cordillera Oriental (Colombia) · Colombia

Punakha

Eastern Himalayas · Bhutan

Putao

Kachin Hills · Myanmar

Qila Abdullah

Balochistan · Pakistan

All 48 growing regions · All 101 growing areas

A tall feral cannabis plant growing beside a path and small hut, with a watchtower and distant mountains under a blue sky.

Picture of the day

Landrace Cannabis plant growing near Sipchu village, deep in the Chapramari forest & wildlife sanctuary. West Bengal - India

About this photograph

Featured article

Nikolai Ivanovich Vavilov (25 November 1887 – January 1943) was a Russian botanist and geneticist. From 1920 he headed the Bureau of Applied Botany, which became the All-Union Institute of Plant Industry (VIR) in 1930. He led collecting expeditions for crop plants in Asia, Africa and the Americas. He published three names in Cannabis: C. sativa var. spontanea (1922), for wild-type hemp near Saratov; C. sativa f. afghanica (1926); and, with D. D. Bukinich, C. indica var. kafiristanica (1929). The last two came from his 1924 expedition to Afghanistan. A plant grown from seed he collected at Gui-Akhen in 1924 is the neotype of Cannabis sativa subsp. indica var. afghanica (Vavilov s.n., Gui-Akhen (1924)). He was arrested in 1940 and died in prison in Saratov in January 1943.

Herbarium databases use the name N. I. Vavilov. His botanical author abbreviation is Vavilov; the International Plant Names Index also lists Vav.

Vavilov was born in Moscow. His father, Ivan Il'ich Vavilov, was a textile merchant of peasant background and a leader in the Moscow City Council. Vavilov graduated from the Moscow (Petrovsky) Agricultural Institute in the spring of 1911. From August 1913 to October 1914 he was abroad, mainly in Britain, where he trained under William Bateson at the John Innes Horticultural Institute at Merton and under Rowland Biffen at the School of Agriculture in Cambridge. He returned to Russia when the First World War broke out.

In 1917 he became professor of agriculture and plant breeding at the Saratov Higher Agricultural Classes and moved to Saratov that autumn. In 1920, after the death of R. E. Regel, he was elected head of the Bureau of Applied Botany. …

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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