RSC-THA-UBO-0420230001
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| Isan Thai General Population 2023 | |
|---|---|
| RSC-THA-UBO-0420230001 | |
| |
| Isan Thai grown outdoors in Hawaii (RSC blog post, November 2025) | |
| At a Glance | |
| Classification | Landrace |
| Accession Type | General population |
| Primary Purpose | Recreation |
| Plant Height | 2–4 m |
| Photoperiod | Short-day |
| Aroma | Strong |
| Effects | Intense |
| Botanical Characteristics | |
| Growth Pattern | Christmas tree |
| Processing | |
| Method | Ganja |
| Notes | Seedless or lightly seeded buds |
| Location | |
| Country | Thailand |
| Province/State | Ubon Ratchathani Province |
| Coordinates | 15.19, 105.33 |
| Traditional Names | |
| Local Name | sa, gancha |
| Collection | |
| Method | Seeds |
| Sourcing Type | Point of Origin |
| Autochthonous | Yes |
| Date | April 2023 |
| Collector | Angus |
| Conservation | |
| Priority | High |
| Introgression | Minimal |
| Cultivation | |
| Status | Unknown |
| System Type | Unknown |
| Preservation | |
| Seed Storage | The Real Seed Company |
Isan Thai General Population 2023 is a landrace cannabis accession from Ubon Ratchathani Province, Thailand, listed as Isan Thai in the seed catalogue of The Real Seed Company (RSC).[1] RSC classifies it as a traditional Lao-Thai cannabis landrace grown for ganja.[1]
Geography
RSC reports that the landrace was obtained from villagers in rural Ubon Ratchathani Province, in the southeast of Isan, in the Lao-speaking regions that border the Mekong and neighbouring Laos. It gives a latitude of about 15° N.[1]
History
According to RSC, cannabis, known locally as sa or gancha, is a traditional household plant in rural Ubon, where small stands of ganja plants have been a feature of many village gardens for several centuries, alongside culinary and medicinal plants such as Thai basil, galangal, Thai aubergine, chilli pepper and papaya.[1] RSC writes that the historical evidence suggests cannabis probably became commonplace in Lao and Thai cultures in the same era as chilli, papaya and tobacco, crops from the Americas that reached Asia on Muslim and European merchant ships during the Age of Sail.[1]
RSC suggests that genomics may yet establish an independent centre of domestication for Tai (Lao, Tai Yai and Thai) ganja landraces along the southern edges of China, southward from Yunnan. It names its Burmese and Highland Thai accessions as possible examples (Burmese General Population 2025, Highland Thai Reproduction 2008). If so, RSC writes, the distinctive characteristics of most Tai ganja would have arisen through hybridisation between such landraces and cannabis imported from historic centres of ganja production such as Sumatra and East India (Bengal and the Coromandel Coast).[1]
In a November 2025 blog post RSC cites the 1977 morlam song "Bong Ja Bong!" by the singer Dao Bandon, which it says celebrates what Westerners of the day called "Thai stick" and people in Laos and Thailand call sa or gancha. The post reports that in a recently constructed genome tree the variety closest to RSC's Isan Thai is a Jamaican heirloom. Assuming the samples are authentic, RSC says, this fits the received wisdom that Westerners introduced Isan Thai landraces to the Caribbean in the 1970s.[2]
Collection Details
The listing gives the sourcing as The Real Seed Company, Isan, Thailand (2023).[1] Versions of the listing from April 2024 to January 2025 dated the sourcing to April 2023.[3][4] The Kwik Seeds listing of the same line, on the shop RSC calls its other site,[5] gives the sourcing as The Real Seed Company, Isan, Southeast Asia (2023).[6] Neither listing names the village or the villagers.
Cultivation Details
RSC gives the purpose as ganja, which it glosses as seedless or lightly seeded buds, and the regional growing period as about six months from seed to harvest. It lists greenhouse or outdoor growing.[1]
Botanical Characteristics
RSC gives a height of about 2 metres. Kwik Seeds, and versions of the RSC listing from April 2024 to February 2026, give 2 to 4 metres.[1][6][3][7] RSC lists a strong aroma, resinous buds, an intense high and Sativa-type architecture.[1] Versions of the listing from April 2024 to January 2025 classified the line as Cannabis sativa subsp. indica var. indica.[3][4]
Smoke Reports
See Also
References
- ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 "Isan Thai". The Real Seed Company. Retrieved 17 September 2026.
- ↑ "Isan Thai – Bong Ja Bong!". The Real Seed Company. 22 November 2025. Retrieved 17 September 2026.
- ↑ 3.0 3.1 3.2 "Isan Thai". The Real Seed Company. Archived from the original on 17 April 2024. Retrieved 17 September 2026.
- ↑ 4.0 4.1 "Isan Thai". The Real Seed Company. Archived from the original on 25 January 2025. Retrieved 17 September 2026.
- ↑ "Hemp & Multipurpose". The Real Seed Company. Retrieved 17 September 2026.
- ↑ 6.0 6.1 "Isan Thai". Kwik Seeds. Retrieved 17 September 2026.
- ↑ "Isan Thai". The Real Seed Company. Archived from the original on 9 February 2026. Retrieved 17 September 2026.