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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.

The landrace map

Accessions, coloured by the status of their seed lots, with growing places and archaeological sites. Another 566 accessions have no coordinates yet.

Interactive map of landrace accessions, growing places and archaeological sites. 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
364of the 1140 accessions on this map have a seed lot rated Urgent. See which populations to grow out first
Places
Growing region
Central Myanmar
Myanmar
Dry central plains of Myanmar, in the middle basin of the Ayeyarwady, where officials reported small, secret plots of ganja in the 1890s and where villages in Ayadaw Township have grown cannabis since 2022–23
Quindío
Cordillera Central (Colombia) · Colombia
Radom
South Darfur State · Sudan
Sa Pa
Northwest Vietnam · Vietnam
Sabaki River valley
Kilifi · Kenya
An aerial view of dry, bare fields stretching to low hills under a clear evening sky
Picture of the day
The Phu Phan mountains in the dry season.
Phu Phan · Éloïse, 2025 · About this photograph
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. 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.
New here

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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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