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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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Filter by collection year, classification, seed lot, sourcing type or provenance evidence, and select a marker for accession details. Every figure on this card describes the accessions currently shown. A further 495 documented accessions carry no coordinates yet and cannot be mapped.

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63Growing areas

29Growing regions

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

365of the 877 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

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Growing regionA broad ecological and cultural grouping

Growing areaA specific cultivation zone within a region

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Featured accessionRSC-LAO-UNK-0120230002

Laos Collected 2023 Landrace

Mango Thai #2 General Population 2023 is a landrace cannabis accession from Laos, listed as Mango Thai #2 in the seed catalogue of The Real Seed Company (RSC). RSC describes it as a cannabis landrace collected from a highland village where tribal farmers are contracted by a Thai broker to cultivate ganja for the Thai market. The Real Seed Company offers the line for sale on its Kwik Seeds site (checked 17 October 2026).

PopulationGeneral populationShort-day

Recorded usesRecreation

CollectionSeedsPoint of Origin

PreservationThe Real Seed Company

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Places

Featured growing regions and areas

Growing region

Southern Cambodia

Mekong Basin

Major landrace cannabis cultivation region spanning Cambodia's southern provinces, from the Cardamom Mountains to the Vietnamese border

Cardamom Mountains

Southern Cambodia

Ganja Mahal

Jalpaiguri

North Bengal Plains

Kampot

Southern Cambodia

All 32 growing regions · All 73 growing areas

Featured article

The Royal Botanic Gardens, Kew (RBG Kew) is a botanic garden and plant-science institution at Kew, in Richmond, London. Its garden dates from 1759. Its herbarium, registered in Index Herbariorum under the code K, holds around seven million preserved vascular plant specimens. Its Economic Botany Collection was founded in 1847 as the Museum of Economic Botany. Both collections hold cannabis. The Herbarium has ten sheets of Cannabis sativa filed under number 4665 of Nathaniel Wallich's catalogue, the dated ones gathered between 1796 and 1826. The Economic Botany Collection holds hemp fibre, cordage, seed and a pipe for smoking cannabis from Zululand. read more →

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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, and 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

Source

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News

16 Oct 2026

Sirohi police seize 2,950.84 kg of green ganja plants grown among maize and fennel in fields at Valoria in Pagara Phali

Valoria · Rajasthan · India

Source

15 Oct 2026

Police Narcotics Bureau arrests three Thai nationals at Bandaranaike airport with 5.96 kg of hashish in cosmetics containers

Katunayake · Western Province · Sri Lanka

Source

15 Oct 2026

SSB 45th Battalion recovers about 510 kg of ganja in 13 bundles from a mango orchard near Fatehpur in Supaul, 700 metres inside India from Border Pillar 204

Fatehpur · Bihar · India

Source

15 Oct 2026

Sonamura police, 81st Battalion BSF and 11th Battalion TSR recover 327.7 kg of dry ganja in seven plastic drums at Kamalnagar Krishnadola, Sepahijala

Kamalnagar Krishnadola · Tripura · India

Source

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Ongoing

Map of reported cannabis events. The interactive map is unavailable here; see the current events portal instead.

Activity

20 Oct 2026Zhurba 486 (1975)

20 Oct 2026Zhukova 528 (1911)

20 Oct 2026Zenzinov s.n., Nerchinsk (1857)

20 Oct 2026Zamatkinov 103/11 (1927)

20 Oct 2026Voronov 10 (1932)

20 Oct 2026Vašák s.n., Gosh (1974)

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Mango Thai #2 General Population 2023

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Royal Botanic Gardens, Kew

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