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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.

Cannabis plants growing untended beside a concrete building, with open grassland and hills behind
Picture of the day
Feral cannabis growing in Chapramari National Park, near Sipchu village.

Accession Map

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 452 documented accessions carry no coordinates yet and cannot be mapped.

Interactive map of documented accessions. It is unavailable here; browse the accession list instead.
Seed lot status
UrgentAt riskSecureHeld in a genebank, not distributedNo data yet, or too little to rateWhat these mean
365of the 876 accessions on this map have a seed lot rated Urgent. See which populations to grow out first
Places
Featured
Rif Mountains
The traditional kif cultivation zone of northern Morocco and one of the longest-standing drug-type cannabis landscapes still under farmer management.
Jalpaiguri
North Bengal Plains
Kampot
Southern Cambodia
Ketama
Rif Mountains
Koch Bihar
North Bengal Plains
Research

Latest publications

Venue: Agriculture and Natural Resources
30 Sep 2026
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.
Map of reported cannabis events. The interactive map is unavailable here; see the current events portal instead.
Activity

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Start with the record

Learn what an accession is, how to read its fields and maps, and what the status of its seed lot means.

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Field observations, photographs, corrections, sources and translations all strengthen the open record.

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