Southern Cambodia
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| Southern Cambodia | |
|---|---|
| Location | |
| Coordinates | 11.000000, 104.500000 |
| Gene Pool | Southeast Asian Gene Pool |
| Country | Cambodia |
| Provinces/States | Takeo,Koh Kong,Kampot,Kandal,Preah Sihanouk,Kampong Speu,Pursat |
| Elevation Range | 0–1,700 m |
| Area | ~40,000 km² |
| Climate | Tropical monsoon |
| Primary Rivers | Mekong River,Bassac River,Prek Tnaut River |
| Primary Mountains | Cardamom Mountains,Elephant Mountains,Bayong Kor Range |
| Conservation Status | Endangered |
Southern Cambodia is the primary landrace cannabis cultivation region in Cambodia, encompassing a diverse arc of terrain from the dense mountain forests of the Cardamom Mountains in the west, through the coastal lowlands of Koh Kong, Kampot and Sihanoukville, to the Mekong River corridor of Kandal and the Bayong Kor mountains of Takeo on the Vietnamese border. The region has been documented as a centre of cannabis production since at least the early 1980s, with production peaking in the late 1990s when the US State Department estimated national output at 700–1,000 tons annually, the majority originating from southern provinces.[1]
Cannabis cultivation in Southern Cambodia is inseparable from the country's broader ethnobotanical tradition. For centuries, cannabis (គញ្ជា, kaanhcha) was a routine feature of Khmer cuisine, traditional medicine and social life, described by the ethnobotanist Marie Alexandrine Martin as "a plant that is socially beneficial."[2] The 1996 Law on Drug Management, drafted under US diplomatic pressure and targeting heroin transit rather than cannabis,[3] criminalised a crop that had been freely cultivated, sold and consumed for generations, driving production from open fields and household gardens into dispersed mountain plots under ongoing eradication.
No systematic botanical collection, genetic characterisation or chemotype analysis of cannabis from this region has ever been conducted. The sole academic botanical identification classifies the Koh Kong cultivar as Cannabis indica.[4] What survives in the Bayong Kor mountains, the Cardamom corridor and scattered plots across the region's provinces may represent some of the last uncharacterised landraces in Southeast Asia.
Geography
Southern Cambodia spans several distinct physiographic zones, each associated with different patterns of cannabis cultivation.
The Cardamom-Elephant Corridor
The Cardamom Mountains (Chuor Phnom Krâvanh) and the Elephant Mountains (Chuor Phnom Dâmrei) form a continuous mountain chain running northwest to southeast across the western half of the region, reaching 1,771 m at Phnom Aural, Cambodia's highest peak. Dense tropical forest, rugged terrain and limited road access made this corridor the epicentre of commercial cannabis production during the 1990s and early 2000s, with cultivation documented in Koh Kong, Pursat, Kampong Speu and Kampot provinces.[1] The same inaccessibility that sheltered cannabis cultivation also harboured large-scale illicit safrole oil extraction during this period.[5]
The Mekong-Bassac Lowlands
The Mekong River and its distributary, the Bassac (Tonle Bassac), flow through Kandal province immediately south of Phnom Penh before entering the Vietnamese delta. This flat, fertile alluvial corridor supported open cannabis cultivation along the riverbanks through the 1990s. Martin (1975) observed that "along the river and closer to Vietnam, cultivation of these plants is of greater importance,"[2] and traditional Mekong corridor cultivation reportedly involved simply scattering seeds along the riverbanks and allowing plants to grow unattended.[6] Associated Press footage from 1996 documented open cannabis fields on "New Island" outside Phnom Penh on the Mekong, with irrigation pipes running through banana-intercropped plots.[7] This lowland riverine cultivation has been entirely eliminated by enforcement.
The Bayong Kor Range
The Bayong Kor mountains in Kirivong district, Takeo province, form a low range along the Vietnamese border that has become the primary centre of cannabis cultivation since the early 2000s. The terrain spans four communes — Preah Bat Choan Chum, Prey Ampok, Som and Kiri Chung Koh — and is described in police reports as "ideal for growing marijuana and smuggling to Vietnam."[8]
Coastal Zone
The Gulf of Thailand coastline running through Koh Kong, Sihanoukville and Kampot historically served as the primary export corridor for Cambodian cannabis. The deep-water port at Sihanoukville and the Koh Kong coastline near the Thai border were identified as major trafficking routes in the 2003 INCSR.[1]
Climate
Southern Cambodia has a tropical monsoon climate characterised by two distinct seasons. The wet season runs from approximately May to November, driven by the southwest monsoon, with annual rainfall ranging from 1,500 mm in the eastern lowlands to over 4,000 mm on the windward slopes of the Cardamom Mountains. The dry season extends from December to April. Temperatures in the lowlands typically range from 25°C to 35°C year-round. Higher elevations in the Cardamom range are modestly cooler.
Cannabis harvest traditionally occurs between late December and early January, coinciding with the transition to dry-season conditions.[1] Martin (1975) documented that plants reached inflorescence after four to five months, planted during the rainy season and harvested dry.[2]
Culture
Cannabis in Southern Cambodia historically served overlapping culinary, medicinal and social functions that were integrated into everyday rural life rather than segregated as a distinct drug culture. For detailed treatment of these traditions, see Cannabis in Khmer culture, Cannabis in Khmer Cuisine and Cannabis in Khmer Medicine.
Culinary tradition
Cannabis soup (sngao), particularly sngao moan (chicken soup) flavoured with roasted cannabis leaves, was a common dish. Fresh leaves served as condiments (kruiang) for curry and vegetables accompanying vermicelli soup (inum bänhcok) and were eaten as fritters with fish paste (prähok). Martin emphasised that "not only the intoxicating power of Cannabis but the pleasant flavor it imparts to food" sustained its culinary role.[2] Market vendors in Phnom Penh confirmed in 1995 that "even cooks in restaurants come to buy it to add to their noodle soup."[9]
Medicinal use
Cannabis was recorded as an analgesic "comparable to the opium derivatives" in traditional Khmer medicine, with applications including appetite restoration, digestion, post-delivery care, lactation stimulation and treatment of malaria, dysentery, asthma and convulsions.[2] In Phnom Penh's markets through the 1990s, cannabis was sold at traditional medicine stalls alongside animal skins, herbs, barks and other remedies as part of the established pharmacopoeia.[6]
Smoking and social use
Dried cannabis was cut on a chopping block of strychnos wood (slaeng), mixed with tobacco and smoked in paper, maize leaves or banana leaves, or more commonly placed in a bamboo water pipe (rut sey). Smoking was fundamentally social: after the evening meal, the head of household would lay out a straw mat and invite others "to avoid being sad, to experience a feeling of well-being (sruol khluan)."[2] Cannabis was not considered dangerous by Khmer communities, in contrast to opium which was associated with depravity.[2]
Knowledge destruction
Most ancient Khmer medical manuscripts (sastra), inscribed on palm leaves, were destroyed during the Khmer Rouge period (1975–1979), when traditional healers were systematically targeted and eliminated. The National Center for Traditional Medicine (NCTM), established in 2010, has undertaken some reconstruction of surviving knowledge.[10]
Cultivation History
Post-Khmer Rouge Reconstruction (1980–1991)
The earliest documented large-scale cannabis cultivation in the region comes from the post-Khmer Rouge period. An academic Vulnerability and Capacity Assessment documented cannabis at two coastal communities in Koh Kong province: at Koh Kapik commune on the Thai border, cannabis was "widely grown from 1980 to 1985," while at Koh Sralao, mountain forest was cleared from 1980 to 1990 specifically to plant Cannabis indica, driven by conflict refugees who "moved to Koh Sralao motivated by personal safety."[4] Cannabis cultivation at Koh Sralao ended in 1991 when the Ministry of Environment declared the area protected.[4]
The Thai Investment Era (1992–2002)
As Cambodia opened to foreign engagement through the UNTAC period, commercial cultivation expanded dramatically, fuelled by Thai capital. In 1996, a Phnom Penh anti-drug officer identified the pattern: "They grow it because Thai businessmen came here and gave them money to do it. Especially in Kandal, Koh Kong, and Kampot provinces. They give them money and irrigation machines."[7]
Koh Kong became the epicentre of production. A 2002 Reuters report described the province as Cambodia's "Wild West" and "a production zone for some of Asia's finest quality marijuana, grown in staggering quantities."[11] Drug lords provided farmers with tools, seeds and fertiliser, and a two-tier quality system emerged: poorly cured bulk cannabis ("hay") sold domestically for US$2–4 per kilogram, while superior export-grade product was channelled through Sihanoukville and Koh Kong to international markets.[6]
The scale was revealed in April 1997 when officials at Sihanoukville port seized seven tons of seeded, compressed, shrink-wrapped marijuana concealed inside containers labelled as rubber and destined for Sri Lanka.[12]
Peak Production (Late 1990s–Early 2000s)
The 2003 INCSR estimated total national output at 700–1,000 tons annually, with production concentrated across nine provinces, the majority in the southern half of the country: Koh Kong, Kampot, Kandal, Kampong Cham and others.[1] Cannabis was grown using traditional farming methods with harvest between late December and early January, much of it described as "contract cultivation" under the control of foreign criminal syndicates.[1] Europe was identified as the major destination, with Cambodia ranked as the second-largest source of seized cannabis in Europe behind only Colombia.[6]
Geographic Shift to Kirivong (2000s–present)
As enforcement pressure and new road infrastructure reduced Koh Kong's viability, the centre of gravity for cultivation shifted southeast to Kirivong district in Takeo province. Takeo provincial police chief Chheang Phannara stated in 2021 that growing marijuana in Preah Bat Choan Chum commune "is not a new practice and it has been going on for many generations."[13]
The scale of Kirivong cultivation is significant. In the first half of 2017, district police destroyed 134,886 marijuana plants.[14] A single operation on 1 February 2020 destroyed 180,367 plants across 24 locations. Between 2019 and mid-2021, police documented 97 operations, burned crops at 443 locations, destroyed 282 water reservoirs, and confiscated 80.5 kg of dried marijuana across 60.97 hectares.[8]
Cultivation is characterised by dispersed small plots on remote mountain slopes, concealed through intercropping with cassava, cashew, sesame and forest trees. Sophisticated irrigation systems including wells, ponds and piped water supply the plots. Growers typically flee before police arrive and replant elsewhere after each raid in a persistent "whack-a-mole" pattern.[15]
Dispersed Cultivation
Cannabis cultivation has also been documented in the Cardamom Mountains corridor spanning Pursat, Kampong Speu and Kampot, where remote deep-forest plots are concealed among sesame crops and other cover.[16] A pattern of cultivation expertise export has been documented: a grower from Takeo established a 7,000-plant operation on Bunong indigenous land in Mondulkiri,[17] and the 2015 Pursat operation involved plants sourced from Kandal province,[16] suggesting established growing zones serve as sources of agricultural knowledge that radiate outward under enforcement pressure.
Genetics
No systematic genetic characterisation of Southern Cambodian cannabis has been conducted. The sole academic botanical identification classifies the Koh Kong cultivar as Cannabis indica.[4] Martin (1975) distinguished male and female plants by local naming conventions (kanhcha: chmo'.l and kanhcha: nhi:) but did not attempt taxonomic classification beyond the species level.[2]
Martin's observation that French colonial cultivation attempts in southern Indochina yielded plants of only 0.6 metres instead of the expected several metres suggests Cambodian populations may represent distinct low-growing varieties adapted to local conditions, a morphological characteristic that has never been formally studied.[2]
A two-tier quality system documented since the 1990s — poorly cured bulk cannabis for domestic consumption versus superior export-grade product — suggests that grower selection and post-harvest processing, rather than genetic distinctiveness alone, may account for observed quality differences.[6] Whether regional variation exists between Kirivong, Koh Kong, the Cardamom corridor and the Mekong lowlands — the same genetics grown in different environments or genuinely distinct populations — is unknown.
Growing Areas
The Bayong Kor mountain range in Kirivong district, Takeo province. The primary centre of modern cannabis cultivation in Cambodia, with multi-generational growing documented across four communes.[13]
Epicentre of commercial production during the 1990s and early 2000s, described as producing "some of Asia's finest quality marijuana."[11] Now largely suppressed by enforcement and infrastructure development.
Cardamom Mountains
Remote mountain forests spanning Pursat, Kampong Speu and Kampot, harbouring dispersed cultivation in deep forest.[16]
Kandal Province
Mekong River corridor immediately south of Phnom Penh. Historical lowland cultivation zone, now largely eliminated.[7]
All documented Growing Areas
| Growing Area |
|---|
| Cardamom Mountains |
| Kirivong |
Accessions
| Accession ID | Name | Priority | Collected | Locality |
|---|---|---|---|---|
| ZOM-KHM-TAK-002024001 | Kirivong General Population 2024 | Critical | 20 June 2024 | |
| ZOM-KHM-TAK-0420230003 | Kirivong 'Cambodian Red' General Population 2023 | Critical | 15 April 2023 | Secret |
| ZOM-KHM-TAK-0420230006 | Kirivong 'Pha-aok' General Population 2023 | Critical | 15 April 2023 | Secret |
| ZOM-KHM-KAM-0420230001 | Kampot 'Chumkiri' General Population 2023 | Critical | 15 April 2023 | Secret |
| ZOM-KHM-KOH-0420230001 | Koh Kong 'Chamka Kas' General Population 2023 | 15 April 2023 | Secret | |
| ZOM-KHM-KAM-0420230002 | Kampot 'Kao Sla' General Population 2023 | 15 April 2023 | Secret | |
| ZOM-KHM-KOH-0420230002 | Koh Kong 'Prek Svey' General Population 2023 | Critical | 15 April 2023 | Secret |
| ZOM-KHM-TAK-0420230001 | Kirivong General Population 2023 | Critical | 15 April 2023 | Secret |
| ZOM-KHM-TAK-0420230004 | Kirivong 'Phnom Bayang' General Population 2023 | 15 April 2023 | Secret | |
| ZOM-KHM-TAK-0420230002 | Kirivong 'Lime' General Population 2023 | Critical | 15 April 2023 | Secret |
| ZOM-KHM-TAK-0420230005 | Kirivong 'Ta Ou' General Population 2023 | Critical | 15 April 2023 | Secret |
| ZOM-KHM-PUR-0420220001 | Pursat General Population 2022 | Critical | 15 April 2022 | Secret |
| ZOM-KHM-TAK-0420220001 | Kirivong General Population 2022 | Critical | 15 April 2022 | Secret |
| ZOM-KHM-KOH-0420220001 | Tatai General Population 2022 | Critical | 15 April 2022 | Secret |
| ZOM-KHM-TAK-0420220002 | Kirivong 'Lime' General Population 2022 | Critical | 15 April 2022 | Secret |
| ZOM-KHM-TAK-0420220003 | Kirivong 'Cambodian Red' General Population 2022 | Critical | 15 April 2022 | Secret |
| ZOM-KHM-TAK-0420220004 | Kirivong 'Mango Passion' General Population 2022 | Critical | 15 April 2022 | Secret |
Botanical Characteristics
Regional Traits
Cambodian cannabis is traditionally drug-type, selected for smoking and culinary use rather than fibre. Martin (1975) noted that cannabis fibres were "completely unknown in Khmer country" — a sharp contrast with the Western Himalayan fibre tradition — and that French attempts to cultivate textile-grade cannabis in southern Indochina failed, yielding only 0.6-metre plants.[2]
Female plants (kanhcha: nhi:) yielded both the preferred smoking material and the seeds used for propagation. Male plants (kanhcha: chmo'.l) were believed to cause eye disease and lacked effective resin, though both sexes were used medicinally.[2]
Geographic Variation
No comparative morphological or genetic study between growing areas within Southern Cambodia has been conducted. The region's terrain ranges from sea-level alluvial plains to 1,700 m mountain slopes, suggesting environmental selection pressures could produce meaningful variation, but this remains undocumented.
Cultivation Practices
Traditional Methods
Martin (1975) documented simple household cultivation: seeds from female plants soaked in water for three days, planted in open ground during the rainy season, harvested dry. Plants reached inflorescence after four to five months, requiring only water and chicken or cattle manure.[2] Along the Mekong corridor, cultivation reportedly involved scattering seeds along the riverbanks and allowing plants to grow unattended.[6]
Modern Prohibition-Era Cultivation
Under enforcement pressure, cultivation has shifted from open lowland fields to dispersed plots on remote mountain slopes. Modern practices in Kirivong include:
- Concealment through intercropping with cassava, cashew, sesame and forest trees
- Sophisticated irrigation infrastructure: wells, ponds and piped water systems
- Seasonal forest camps during the growing period
- Dispersal across multiple small plots rather than concentrated fields
- Rapid replanting at new locations after eradication raids[8][15]
The shift from open riverine cultivation to hidden mountain plots represents a fundamental change in the growing environment and the selection pressures acting on the plant. Traditional lowland cultivation along the Mekong — Martin's baseline — has been entirely eliminated.
Conservation Status
Conservation status: Endangered — Active eradication, no known preservation efforts, traditional cultivation knowledge under threat.
Southern Cambodia's landrace cannabis populations face severe and compounding threats:
- Eradication campaigns: Annual destruction of tens of thousands of plants and associated irrigation infrastructure eliminates cultivated populations and disrupts seed-saving practices. Between 2019 and mid-2021 alone, police documented 97 operations across 443 locations in Kirivong.[8]
- Habitat displacement: Enforcement has driven cultivation from optimal lowland environments into increasingly marginal and remote mountain sites, altering the growing conditions under which these populations evolved.
- Cultural disruption: Criminalisation of a multi-generational agricultural practice severs the transmission of traditional cultivation knowledge, seed selection practices and agronomic expertise.
- Knowledge destruction: The Khmer Rouge's systematic elimination of traditional healers and destruction of palm-leaf medical manuscripts (sastra) severed continuity with the deeper ethnobotanical tradition.[10]
- Genetic contamination: Commercial pressure may favour higher-yielding imported genetics over traditional varieties, though the extent of modern hybrid introduction is undocumented.
- Supply chain restructuring: The cross-border trade with Vietnam, where dried marijuana sells for US$35–40 per kilogram at the farm gate,[13] may select for weight and volume over the quality characteristics that defined traditional Cambodian cannabis.
The traditional riverine cultivation described in the 1990s — where farmers "scattered the seeds and let it grow" along the Mekong[6] — appears to have been entirely eliminated.
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See Also
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 US Department of State. "International Narcotics Control Strategy Report 2003: Cambodia." Bureau for International Narcotics and Law Enforcement Affairs, March 2003. [1]
- ↑ 2.00 2.01 2.02 2.03 2.04 2.05 2.06 2.07 2.08 2.09 2.10 2.11 Martin, Marie Alexandrine. "Ethnobotanical Aspects of Cannabis in Southeast Asia." In Vera Rubin (ed.), Cannabis and Culture. Berlin/New York: De Gruyter Mouton, 1975, pp. 63–76.
- ↑ William J. Clinton. "Letter to Congressional Leaders on Major Narcotics Producing and Transit Countries." White House Office of the Press Secretary, 22 February 1996. [2]
- ↑ 4.0 4.1 4.2 4.3 "Vulnerability and Capacity Assessment of Koh Kong and Kampot Provinces, Cambodia." [3]
- ↑ US Embassy Phnom Penh. Cable 07PHNOMPENH1376, "2008 INCSR Submission: Cambodia." 2 November 2007. [4]
- ↑ 6.0 6.1 6.2 6.3 6.4 6.5 6.6 Amit Gilboa. "Cannabis Cambodia: Smoker's Paradise." Cannabis Culture, 1 November 1998. [5]
- ↑ 7.0 7.1 7.2 "Cambodia: Farmers Turn to Growing Marijuana." Associated Press Television (APTV), 30 April 1996. [6]
- ↑ 8.0 8.1 8.2 8.3 Ry Sochan. "Hunt on for Takeo marijuana growers." Phnom Penh Post, 1 June 2021. [7]
- ↑ Sou Sophonnara. "Don't sell too much ganja, police tell traders." Phnom Penh Post, 24 March 1995. [8]
- ↑ 10.0 10.1 "The high life." Phnom Penh Post, 27 November 2015. [9]
- ↑ 11.0 11.1 "Cambodia's Wild West." Reuters, 18 May 2002. [10]
- ↑ Sam Rith and Richard Wood. "Business tycoon started small." Phnom Penh Post, 19 November 2004. [11]
- ↑ 13.0 13.1 13.2 Khouth Sophak Chakrya. "Officers told to tackle marijuana cultivation." Phnom Penh Post, 6 December 2021. [12]
- ↑ Khouth Sophak Chakrya. "Field of Dreams: Marijuana crop destroyed in Takeo." Phnom Penh Post, 5 July 2017. [13]
- ↑ 15.0 15.1 Nov Sivutha. "Police destroy five marijuana farms in Takeo province." Phnom Penh Post, 12 August 2021. [14]
- ↑ 16.0 16.1 16.2 Khouth Sophak Chakrya. "Thousands of marijuana plants seized, burned by Pursat police." Phnom Penh Post, 6 May 2015. [15]
- ↑ Orm Bunthoeurn. "Mondulkiri marijuana farm busted." Phnom Penh Post, 5 April 2021. [16]