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

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Critical 78High 108Medium 175Low 33Not yet assessed 9

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403Landrace accessions

22Growing areas

11Growing regions

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46%of documented landrace accessions are assessed as critical or high conservation priority. Help document them

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An accession is a sample or observation recorded at a specific place and time. An appellation is a locally recognised name tied to place and tradition.

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Featured accessionZOM-THA-PHU-0120250002

Thailand Collected 2025 Landrace High priority

Ta Lo Farm 'Tiger Tail' Selection 2024 is a domesticate landrace cannabis accession collected by Isabella of the Zomia Collective in Sakhon Nakhon Province, Thailand.

PopulationSelectionMonoeciousShort-day

Recorded usesRecreation, Medicine, Food

CollectionSeedsPoint of Origin2025

Field cyclePlant July–SeptemberHarvest December–March

PreservationZomia Genetic Library

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Places

Featured growing regions and areas

Growing region

Northeastern Thailand

Mekong Basin

Khorat Plateau cultivation zone shaped by Mekong tributaries, monsoonal rice agriculture, and long-standing Lao-Isan cultural continuity

Kullu

Western Himalayas

Malana Valley

Western Himalayas

Mekliganj

The Dooars

Parvati Valley

Western Himalayas

All 11 growing regions · All 22 growing areas

History of Opium in Sri Lanka (Uragoda 1983)

"History of Opium in Sri Lanka" is a scholarly article by C.G. Uragoda, published in the journal Medical History (volume 27, pages 69–76) in January 1983 by Cambridge University Press. The article is an important secondary source for the history of opium and cannabis regulation in colonial Ceylon, providing documented citation chains to primary colonial government records across a period spanning the Dutch administration through the early twentieth century.

Uragoda traces regulation from the Dutch period (with opium imported from Surat and Bengal as recorded in Governor Van Goens's 1663 memoirs), through the establishment of the first licensed opium shop at Chilaw around 1850, to the Opium and Bhang Ordinance of 1867 which placed both substances under a licensed dealer system. Governor Sir West Ridgeway doubled the opium duty and banned the import of bang (ganja) in 1897, and parliamentary questioning in the House of Commons in 1907, including a reply from the young Winston Churchill as Under-Secretary of State for the Colonies, led to the appointment of the Allan Perry committee and the eventual closure of all opium shops. read more →

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Research

18 Jul 2026 · Journal of Cannabis Research

Terroir-driven phenolic chemotypes and antioxidant/antimicrobial activities of Beldia (Cannabis sativa L.) seed extracts

Abstract Geographical variation in the phenolic composition and bioactivity of Moroccan Beldia (Cannabis sativa L.) seeds remains insufficiently characterized, limiting their rational valorization as bioactive resources. This study investigated aqueous extracts from defatted seeds collected in Ketama, Taounate, and Ouazzane using HPLC–DAD phenolic profiling, antioxidant and antimicrobial assays, and molecular docking. Data are reported as mean ± SD (n = 3), and regional differences were evaluated by one-way ANOVA followed by Tukey’s test when applicable. Clear regional discrimination was observed. Ouazzane gave the highest extraction yield (8.08 ± 0.24%), total phenolic content (16.13 ± 0.48 mg GAE/100 g DM), total flavonoid content (6.78 ± 0.20 mg QE/100 g DM), and total antioxidant capacity (565.80 ± 5.90 mg AAE/g), whereas Ketama showed the strongest DPPH scavenging activity (IC₅₀ = 10.25 ± 0.03 µg/mL). HPLC–DAD revealed distinct chemotypes dominated by 4-hydroxybenzoic acid (33.26–36.63%), with Taounate enriched in vanillic acid (35.00%) and caffeic acid (20.44%). Antimicrobial assays showed the best MIC values against Micrococcus luteus (0.50 ± 0.01 mg/mL) and Geotrichum candidum (0.12 ± 0.00 mg/mL). Docking highlighted flavonoid-type constituents as the most plausible active contributors, with catechin hydrate and rutin showing the strongest affinity toward CYP51 (-9.6 kcal/mol). Moroccan terroir strongly shapes the functional profile of Beldia seed extracts and supports region-guided sourcing for future bioactive applications.

Source

1 Jul 2026 · Plant Disease

Screening Diverse Cannabis sativa Germplasm for Resistance to Golovinomyces ambrosiae

Source

30 Jun 2026 · Acta Theologica

Cannabis Sativa, religion and society: Historical, medicinal, legal, and sacramental perspectives

Source

28 Jun 2026 · International Journal of Drug Policy

Value capture in the emerging medical cannabis global value chain: insights from South Africa

Source

19 Jun 2026 · bioRxiv

Sex chromosome-aware GWAS reveals XY-linked agronomic architecture and breeding targets in cannabis