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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

Interactive map of documented accessions. It is unavailable here; browse the accession list instead.

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.

All accessionsEvery documented sample and observation

ClassificationLandrace, feral, specimen and related record 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 accessionZOM-THA-PHU-1220240001

Thailand Collected 2024 Landrace High priority

Lin Pooh General Population 2024 is a landrace cannabis accession collected by Éloïse and Isabella of the Zomia Collective in Sakhon Nakhon Province, Thailand.

PopulationGeneral populationMonoeciousShort-day

Recorded usesRecreation, Medicine, Food

CollectionSeedsPoint of Origin2024

Field cyclePlant July–SeptemberHarvest December–March

PreservationSeeds are grown on the farm

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Places

Featured growing regions and areas

Growing region

Southern Thailand

Malay Peninsula

Landrace growing region on Thailand's Malay peninsula, centred on the Tenasserim Hills.

Cardamom Mountains

Southern Cambodia

Chamurchi-Laxmi Duar

The Dooars

Chapramari

The Dooars

Gorumara

The Dooars

All 11 growing regions · All 22 growing areas

Featured article

Phenotypic plasticity is the capacity of a single cannabis genotype to produce different phenotypes in different environments. It is a large part of why Cannabis is so variable: much of the difference in height, form, flowering and chemistry between plants reflects the growing environment as well as inherited differences. Because the same genotype can look and yield differently from one site or season to the next, a plant's field appearance is an unreliable guide to its genetic makeup, which matters for how landraces are described, compared and conserved.

Plasticity is measured by growing the same genotypes across several environments and partitioning the variation into genetic, environmental and interaction components. The interaction term, genotype-by-environment interaction, captures the plastic response: how far genotypes rank or behave differently depending on where they are grown. 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