Cannabis trade in West Bengal

Cannabis trade in West Bengal covers the historical and contemporary commerce in cannabis products in the territory of the present-day Indian state of West Bengal. The trade has two structurally distinct phases. The colonial phase, from the formalisation of British excise control in 1793 to the Partition of 1947, made Calcutta the financial and wholesale back-end of a Bengal Presidency licensed cannabis economy serving the Indian subcontinent, indentured-labour destinations across the British Empire and the medical Cannabis indica preparations of British and American pharmaceutical houses. The contemporary phase, since the cessation of the colonial regulatory regime between 1985 and 1989, operates partly under the Bengal Excise Act, 1909 (which the NDPS Act 1985 expressly preserves in respect of cannabis leaves and seeds) and largely outside any regulatory framework.

The licit Kolkata bhang trade is the surviving licensed segment, operating through long-established sharbat houses in Burrabazar, Sovabazar, Manicktala-Hedua, Bowbazar and Jagubazar. The illicit trade draws on three loose production belts: the Dooars across Jalpaiguri, Alipurduar and Cooch Behar; the southwestern jungle belt across Bankura, Purulia and West Medinipur; and small-scale char-land cultivation in the southern delta and Sundarbans. It moves the largest volumes of product brought into the state from Odisha, Tripura, Manipur and Andhra Pradesh to Kolkata and onward to Bangladesh and the Northeast.

The Siliguri Corridor is the structural chokepoint through which all road and rail Northeast-origin cannabis enters mainland India, giving West Bengal a transit role disproportionate to its in-state production. The West Bengal portion of the India–Bangladesh border, the longest of any Indian state at 2,216.7 km, is a high-volume smuggling theatre supplying Bangladeshi demand that the 1987-89 closure of the Naogaon licensed system left unsatisfied. Internal economics follow the wider South Asian landrace pattern in which the cultivator captures one to three per cent of the eventual retail value, broadly mirroring the structure that Hem Chunder Kerr recorded for the licensed chasi cultivator of the Ganja Mahal in 1877.^{[original research?]}

Urban retail in Kolkata since approximately 2018 has shifted decisively to encrypted-messaging-app dealer networks operating on Telegram and Instagram, with order placement by direct message, payment by UPI and motorcycle delivery within the urban core. A small but growing premium tier of vape cartridges, edibles and isolates enters via diaspora and air-courier channels from Bangkok, Dubai and North American returnees, sitting at an order-of-magnitude higher price-per-gram than flower.

Colonial period

Main articles: Cannabis in Colonial India and Bengal Presidency cannabis trade

Calcutta was the financial and wholesale back-end of the colonial Bengal cannabis economy. Wholesale dealers (mahajans) converged on the Ganja Mahal during the January to April marketing season to buy product directly at the gola, taking dispatches under transport permit by river, by road and (from the 1870s) by the Eastern Bengal Railway. Distribution centres across the Presidency included Dhaka, Pabna, Khulna, Jessore, Chittagong, Comilla, Mymensingh, Barishal and Sylhet, with overland routes to the United Provinces, Bihar and the Central Provinces. Smuggling into Lower Burma, where cultivation, sale and possession had been prohibited under the Burma Excise Act of 1873, was a continuing concern of the colonial excise administration. Smaller export movements to indentured-labour destinations (Trinidad, Guyana, Fiji, Natal) and to British and American pharmaceutical houses for medical Cannabis indica preparations are documented in the India Office Records.

The Naogaon Ganja Society maintained pre-Partition assets in Calcutta, including a deposit at the Bengal Cooperative Bank that has never been recovered.

Retail distribution of the Naogaon product across Bengal was concentrated in the Gandhabanik caste, the trader-druggist community whose pansari shops carried up to three hundred and sixty kinds of indigenous drug ingredients. Risley's 1891 ethnographic glossary records that the Gandhabanik

"retails charas, bhang, opium and ganja, but some have scruples about selling the last and employ a Mahomedan servant to do so. Many shops for the sale of ganja, however, are leased by members of this caste, who pay a Sunri, or a Mahomedan, to manage them."

The arrangement records a recurring caste-management practice in which the Hindu shop-leaseholder retained the commercial benefit of the licensed retail outlet while delegating direct ritual contact with the commodity to a Muslim or Sunri manager. Cooch Behar State, operating its own parallel licensed system under the Cooch Behar Excise Act of 1878, distributed its produce through state golahs rather than through caste-managed retail.

The licit trade since 1985

The NDPS Act 1985 defines "ganja" at section 2(iii) as "the flowering or fruiting tops of the cannabis plant (excluding the seeds and leaves when not accompanied by the tops)" and at section 8 prohibits production, sale and possession outside medical and scientific licensing. Bhang as a leaf preparation is left to the residual jurisdiction of state excise law, which in West Bengal is the Bengal Excise Act, 1909. Section 3(13) of the 1909 Act defines an "intoxicating drug" as "the leaves, small stalks and flowering or fruiting tops of the Indian hemp plant (Cannabis sativa L) including all forms known as Bhang or Siddhi but excluding Ganja, Charas," and section 20 forbids the sale of any such material except under licence from the district Collector; a proviso permits a cultivator to sell unlicensed cannabis material only to a licensee or to an officer authorised by the Excise Commissioner. The Calcutta High Court in Promodh Jha v. State of West Bengal (22 January 2008) reaffirmed that "Bhang is not a narcotic drug and as such the prohibition engrafted in Section 8 of the [NDPS] Act cannot apply to possession or sell or purchase of Bhang," in a case concerning 100 kg of bhang seized near Bamurdanga Bridge in Bally police station limits while being transported by bus toward Bihar.

The retail licensing framework was reconstituted by the West Bengal Excise (Selection of New Sites and Grant of Licence for Retail Sale of Liquor and Certain Other Intoxicants) Rules 2003, notified under Notification No. 800-EX dated 29 July 2003. Rule 4(c) lists "bhang for consumption 'off' the site" as a distinct category of retail licence, alongside country spirit, foreign liquor from former opium depots and "erstwhile ganja shops," pachwai and other foreign-liquor categories. The naming of the latter category as "erstwhile ganja shops" is itself a residue of the pre-1985 system in which the same outlets sold ganja, charas, bhang and opium under the colonial excise. The published fee schedule places the bhang shop at the bottom of the ladder. In rural panchayat areas an "off" bhang shop attracts application, grant and annual fees of Rs 100, Rs 100 and Rs 300 respectively; in municipality areas all three fees are Rs 200; in municipal corporations other than Kolkata, Howrah and Siliguri all three are Rs 300. The schedule does not list separate bhang fees for the Kolkata, Howrah and Siliguri Municipal Corporations.

The licit Kolkata bhang trade is in practice carried on through long-established sharbat houses and sweet-shops in older neighbourhoods of the central business district and North Kolkata rather than through standalone licensed shops. Burrabazar, Sovabazar, Manicktala-Hedua, Bowbazar and Jagubazar are the principal nodes. Long-running addresses include Ralli Singh in Burrabazar (established 1898), Shiva Ashram at 168 Bidhan Sarani near Hedua Park in Manicktala, Shiv Shakti Sherbet Shop at 98 B. K. Paul Avenue in Sovabazar and Loknath Thandai near Ganesh Talkies. Reported retail prices for a glass of bhang sharbat in the 2024 to 2026 seasons cluster at Rs 60 to Rs 100, with seasonal premium pricing at Holi. Demand is sharply seasonal, peaking on Dol Yātrā, Maha Śivarātri and the Charak-Gajan festival of Chaitra Saṅkrānti, in continuity with the festival calendar described under Religious and Cultural Use.

The supply chain for licensed bhang in West Bengal has not been the subject of published research. The proviso to section 20 of the 1909 Act contemplates a closed loop in which a cultivator sells unlicensed cannabis material only to a licensed dealer or to an officer of the Excise Commissioner, but no contemporary contract-cultivation regime is documented. The leaves reaching Kolkata bhang counters at Holi and Shivaratri are widely understood by trade participants to come from the same wild and semi-cultivated plantings in Bihar, the Bankura-Purulia belt and the Dooars that supply the unlicensed market, with the legal distinction lying in the form of the end product rather than in a separate cultivation channel.^{[weasel words]}

State excise revenue overall is large and growing, at Rs 20,444.45 crore in revised estimates for 2024-25, Rs 22,223.16 crore in revised estimates for 2025-26 and Rs 24,200.74 crore in budget estimates for 2026-27, representing approximately 20 per cent of the state's own-tax revenue. The Comptroller and Auditor General's revenue-sector reports do not separately disaggregate bhang from total state excise receipts. Bhang within these figures is statistically negligible. The excise importance of bhang in West Bengal is ritual and symbolic rather than fiscal.

West Bengal has not joined the small group of Indian states with industrial hemp policies. The first commercial hemp cultivation licence in India was issued by Uttarakhand in July 2018 to the Indian Industrial Hemp Association for pilot cultivation in Pauri Garhwal, authorised via government letter No. 581/XXIII/2018/04(11)/2012 dated 29 May 2018. Uttar Pradesh, Madhya Pradesh (2024) and Himachal Pradesh have followed in more limited form. No equivalent notification has been issued by the Government of West Bengal under either the Bengal Excise Act 1909 or section 14 of the NDPS Act. The two principal state agricultural universities, Bidhan Chandra Krishi Viswavidyalaya at Mohanpur, Nadia and Uttar Banga Krishi Viswavidyalaya at Pundibari, Cooch Behar, do not list any cannabis or industrial hemp programme in their public research portfolios. No state-specific medical cannabis policy operates.

The illicit trade

The contemporary illicit cannabis trade in West Bengal draws on three loose production belts, mapped in detail under Cultivation. The Dooars belt across Jalpaiguri, Alipurduar and Cooch Behar carries scattered cultivation in the gaps between tea gardens, in riverine char land and in the forested margins of the Buxa, Jaldapara and Gorumara protected areas. Its structural importance to the cross-border trade with Bangladesh is larger than its share of in-state cultivation, since cannabis grown in Tripura, Assam and Manipur passes through it on the way to Kolkata and the Bangladesh border.^{[original research?]} The southwestern jungle belt across Bankura, Purulia and West Medinipur carries smallholder cultivation in the lateritic uplands and forest margins, mostly in Adivasi villages; its product moves principally eastwards to the Durgapur-Asansol industrial corridor and onwards to Kolkata and northwestwards into Jharkhand. The southern delta and Sundarbans hosts low-volume but persistent cultivation on inaccessible char lands. Birbhum, Murshidabad, Malda, Nadia and the two 24-Parganas districts function less as production zones than as warehouses and transit nodes for product brought in from Odisha, Tripura, Manipur and Andhra Pradesh.

Intermediation between cultivator and wholesale tier is performed by local commission agents (the dalal), often men of the same village or block, maintaining links with travelling traders coming up from Kolkata, Howrah, Asansol or the Bihar-Jharkhand interior. The standing arrangement at harvest is typically a cash advance from the dalal months earlier, repaid in kind at the final price net of advance and interest. This is the classic landrace pattern in which the cultivator captures only a small fraction of the eventual retail value.^{[original research?]} The pattern is structurally identical to the advance-payment system that the IHDC recorded for the Naogaon chasi in 1894, with the difference that the contemporary cultivator operates entirely outside any licensed framework.

From the dalal, product moves to a district-level wholesaler, typically compressed into bricks wrapped in newspaper and plastic and then to inter-state carriers. In the Dooars and Cooch Behar belt this stage frequently overlaps with the Bangladesh-bound smuggling tier; in the Bankura-Purulia belt it overlaps with the Jharkhand carriers; in Murshidabad and Nadia it overlaps with cattle, phensedyl and yaba flows, with carriers often handling multiple commodities in the same run.

Three transport modes dominate. Rail freight by passenger train is the most visible, with regular movement on the Northbound and Kolkata-bound services concealed in luggage, vegetable sacks, false-bottom suitcases and gas cylinders. Bardhaman in particular functions as a chokepoint where multiple long-distance services from Bihar, Assam and the north Bengal districts feed into the Howrah and Sealdah terminals; a Bardhaman Railway Protection Force seizure of 54.21 kg from the down North Bengal Express, originating in Dinhata in Cooch Behar with an estimated market value of Rs 5.5 lakh and six persons arrested, is illustrative. A March 2024 Howrah RPF seizure of 65 kg from two women bound for Hajipur in Bihar, with the consignment having arrived from Ganjam district in Odisha by bus, captures the rail-bus interchange role of Howrah.

Road freight by truck and passenger bus carries the largest volumes between Odisha and West Bengal and between West Bengal and Bihar or Jharkhand. A Birbhum Police seizure of approximately 615 kg from a single vehicle at Chartala More on the Mayureshwar-Ahmedpur road, being moved from Malda via Birbhum towards Durgapur and onward to Jharkhand and Bihar, illustrates the long-distance road tier and the through-state transit pattern. Asansol North Police Station seizures of around 11 kg from a Ranchi-Asansol bus at Jubili More and approximately 10 kg from another Jharkhand-bound bus the same week, recorded during election-period naka checking in March 2026, illustrate the regular smaller-volume bus tier.

River and creek transport in the Sundarbans and along the Padma-Bhagirathi systems carries cannabis alongside cattle, phensedyl and yaba. Motorcycle couriers operate the last-mile within Kolkata, Howrah, Siliguri and Asansol-Durgapur. Concealment includes packaging inside vegetable sacks; the Narcotics Control Bureau Kolkata Zonal Unit's March 2022 seizure of 400 kg worth Rs 24 lakh from an Odisha-to-West Bengal load found product hidden inside vegetables, with the NCB statement noting that the consignors "were supplying it after hiding the Ganja inside vegetables." A separate NCB Kolkata Zonal Unit case against a 357 kg consignment from Ganjam, Odisha established the principal source-to-destination map for the Kolkata urban market.

Street-level retail in Kolkata operates through three overlapping channels. Paan-bidi shops and small stalls in older neighbourhoods carry a side trade in small quantities and sell openly only to known customers. Sadhu networks at the major pilgrimage sites, principally Tārāpīṭha, Tārakeśwar, Kālīghāṭ, Dakṣiṇeśvar and the smaller Śaiva and Śākta centres, sustain a semi-tolerated retail tier (treated under Religious and Cultural Use). A digital tier on Telegram, Signal and Instagram, in which dealers maintain catalogue channels with photographs of premium product, takes orders by direct message and delivers by motorcycle within the urban core. The peer-reviewed sociology of encrypted-app drug dealing identifies the same global pattern: encrypted messaging apps have become "an increasingly attractive tool for drug dealing," combining easy opening and closing of user communities, anonymity features and smartphone operability.

The Bengali product taxonomy follows the broader Indian one with characteristic local variants and is documented in fuller form at Cannabis in Bengali Cuisine and under Preparations and Consumption. The Kolkata retail market shows clear tiering by origin. Local Bengal-produced flower from the Dooars and Bankura-Purulia belts occupies the bottom of the price ladder, typically described as "local" or "B-grade." Odisha and Andhra Pradesh product, principally from the Visakhapatnam and Malkangiri areas, occupies the mid-tier and is the dominant volume product on the Kolkata street. Manipur and Northeast hill product entering through the Siliguri corridor occupies a higher tier valued for stronger effect. The premium tier is occupied by Himachali (principally Malana and Parvati Valley) and Nepali charas, by Kashmiri product and at the top by imported hash and modern hybrid flower brought in via diaspora, tourist and air-courier channels. No "named landrace" market identity in the sense of Malana Cream or Idukki Gold has developed in West Bengal; informal descriptors such as "Cooch Behari" or "Dooars" function as origin labels rather than as branded products.^{[original research?]}

The Tripura-origin network described by the Directorate of Revenue Intelligence after a series of seizures including 841 kg at Berhampore in August 2023, traced to Bishalgarh in Sepahijala district of Tripura, established Tripura as a major Northeast source feeding the West Bengal urban market and onward into Bangladesh. The NCB Guwahati Zonal Unit's August 2024 interdiction of 934.510 kg in Kamrup district, Assam, on a Senapati to Kolkata trafficking syndicate's truck, further establishes the Manipur to Kolkata channel.

Cross-border trade

The West Bengal portion of the India-Bangladesh border, at 2,216.7 km, is the longest stretch of any Indian state on this frontier. It is guarded by the Border Security Force's South Bengal Frontier (covering South and North 24 Parganas, Nadia, Murshidabad and Malda) and North Bengal Frontier (covering Uttar Dinajpur, Dakshin Dinajpur, Cooch Behar, Jalpaiguri, Alipurduar and Darjeeling). The principal direction of cannabis flow has reversed since the colonial period. Bangladesh banned cannabis cultivation in 1987 and prohibited sale in 1989, ending the licensed operation of the Naogaon Ganja Cultivators' Cooperative Society and structurally severing the historical East-Bengal-to-Indian-market flow. Demand in Bangladesh has not disappeared and is supplied in part by smuggling from West Bengal, with significant volumes also entering from Tripura and Mizoram.

BSF South Bengal Frontier reported seizures including 1,223 kg of ganja in the first eleven months of 2024, alongside 1.73 lakh bottles of banned phensedyl, 69,702 yaba tablets and 17.5 kg of narcotic powder, indicating an order of magnitude for the interdicted Bangladesh-bound flow. A 28 April 2025 seizure at Ghojadanga Border Outpost (102 Battalion) of 21 kg of ganja, 24 litres of cough syrup and 364 bottles of phensedyl named the Satkhira region of Bangladesh as the principal cross-border destination on interrogation of the smuggler. An 8 July 2025 BSF Guwahati Frontier and NCB Siliguri Zonal Unit joint operation in Rajpur village, Cooch Behar recovered 473 kg from an Indian smuggler's residence, captured the southward-then-eastward pattern from the North Bengal side. The 27 February 2026 Amdanga (North 24 Parganas) case, in which a Rajasthan-resident carrier was intercepted on an engine van with approximately 200 kg worth Rs 20 lakh, illustrates the long-distance carrier tier feeding the Bangladesh-bound flow.

The Indo-Nepal open border meets West Bengal at Naxalbari and Panitanki in Darjeeling district, opposite Kakarbhitta in Jhapa district of Nepal. The Sashastra Seema Bal North Bengal Frontier is the deployed force. Although the open border treaty allows free movement of persons and curtails routine search, the crossing is the principal land entry for Nepali charas and increasingly Nepali flower into eastern India. The India-Bhutan border in Alipurduar, Jalpaiguri and Kalimpong districts carries small cannabis flows in both directions; the larger structural concern at this border has historically been tobacco and brown sugar rather than cannabis, the former associated with extortion rackets documented in 2021 to 2022 at the Jaigaon-Phuentsholing crossing.

The Siliguri Corridor, approximately 60 km long and 22 km wide at its narrowest, is the sole land bridge between mainland India and the eight Northeast states. All road and rail movement of Northeast-origin cannabis into the rest of India passes through this corridor, with onward distribution radiating to Kolkata via the Howrah-bound trunk routes, to Bihar via National Highway 27 and the Katihar rail line and to Nepal via the Panitanki crossing.^{[editorialising?]} The corridor's structural importance to the cannabis trade is therefore disproportionate to West Bengal's own production: it is the chokepoint for a multi-state flow, of which the Senapati to Kolkata route is the most consistently documented. The establishment of an NCB Siliguri Zonal Unit in September 2023, as part of the Northeast Regional Headquarters expansion, is direct administrative recognition of this role.

The West Bengal-Jharkhand and West Bengal-Bihar borders are porous channels for two-way flow: Bankura-Purulia-grown product moves westward into Jharkhand while Bihar-grown ganja and bhang move eastward into the Burrabazar wholesale belt. The Odisha interface is dominated by Ganjam-to-Howrah-and-Kolkata flow, with northern Odisha (Mayurbhanj, Balasore) feeding the West Medinipur and Jhargram markets via road.

Urban economic geography

The historical centre of the licit bhang trade in Kolkata is Burrabazar in the central business district, where Marwari and Bihari merchant networks have long handled cannabis alongside spices, dry fruit, lassi ingredients and tobacco. The Burrabazar bhang and thandai houses form the principal licit retail tier in the central city; North Kolkata adds Sovabazar, Manicktala-Hedua and Bowbazar as long-established seasonal nodes. The illicit ganja retail tier extends across the city in paan shops and motorcycle-delivered digital networks rather than being neighbourhood-concentrated. The Howrah-Hooghly belt functions principally as warehousing and onward-dispatch territory rather than primary retail.

The pilgrimage economy is a distinct retail tier whose religious significance is described under Religious and Cultural Use. Tārāpīṭha, Tārakeśwar, Kālīghāṭ, Dakṣiṇeśvar and the Gaṅgāsāgar Melā all sustain semi-tolerated cannabis sale around their festival calendars; the scale of these flows has not been independently quantified but is significant enough to be reflected in the seasonal stocking patterns of Burrabazar bhang wholesalers and in the sustained gā̃jā demand of the resident sādhu populations at the cremation-ground shrines.^{[original research?]}

The dense cluster of universities and colleges in central and south Kolkata supports a youth retail market that since approximately 2018 has shifted decisively to Telegram and Instagram-based dealers serving by motorcycle delivery. A 2024 Kolkata case in which central intelligence agencies recovered 34 kg of ganja, 385 g of cocaine and hydroponic flower from an international ring with sourcing from Bangkok, with the principal arrested in Jadavpur, sits at the high end of this segment.

The Dooars-Terai tea belt of Jalpaiguri, Alipurduar and Darjeeling districts, comprising 154 gardens with about 3.5 lakh workers, includes substantial Adivasi populations migrated from the Chota Nagpur plateau in the colonial period. Garden-line settlements include small kitchen-garden cannabis plots for household use, occasional commercial plantings on garden margins and a long-running tradition of gā̃jā consumption among older workers. The 2002 to 2004 plantation crisis, in which at least twenty-two Jalpaiguri gardens closed affecting 21,000 permanent workers, is understood by labour-rights researchers to have pushed some garden households into cannabis cultivation as a cash supplement; quantitative documentation of this shift is limited.

The Sundarbans delta, with scattered island settlements, weak police presence and dense water-channel network, supports both small-scale cultivation and the southbound smuggling channel into Bangladesh. Documentation in journalist longform is thin and the area is one of the principal information gaps for the West Bengal cannabis literature.

Structural economics

Available price-points permit a partial reconstruction of the value chain. The Telangana State Anti Narcotics Bureau's 2024 estimate of cultivator-realised prices of Rs 2,500 per kg for ordinary grade and approximately Rs 10,000 per kg for high-quality product, against retail prices of "between Rs 50,000 and Rs 75,000 in the retail market," is consistent with the wider South Asian landrace pattern in which the cultivator captures three to six per cent of the retail value. Within West Bengal, recent rail and road seizures provide consistent inferred wholesale prices: the 54.21 kg recovered from the down North Bengal Express valued at approximately Rs 5.5 lakh implies about Rs 10,000 per kg at the inter-city wholesale stage, and the 200 kg recovered at Amdanga valued at approximately Rs 20 lakh implies the same at the cross-border-bound wholesale stage. Retail per-gram pricing at the Kolkata street tier in 2024 to 2025 was widely reported at Rs 100 to Rs 300 per gram for local product, rising sharply for Himachali, Nepali and Northeast tiers.^{[weasel words]}

The structural conclusion is that the cultivator's share of the eventual retail rupee is small (commonly one to three per cent at the street-retail tier), the dalal and district wholesaler together capture another five to ten per cent, the inter-state carrier and metropolitan wholesaler capture fifteen to twenty-five per cent and the street retailer captures the rest.^{[original research?]} This distribution is consistent across South Asian landrace cannabis economies and structurally mirrors the historical Bengal pattern recorded by Hem Chunder Kerr in 1877, in which the licensed chasi household's net profit per bigha was a small fraction of the eventual retail value to which the colonial excise duty was applied.^{[original research?]}

Cannabis cultivation in West Bengal is complementary to, rather than displacing of, the other principal rural livelihoods. Tea-garden households continue to draw the bulk of cash income from garden labour and from MGNREGA where available; jute and paddy in the south and centre and maize and ginger in the Dooars remain the dominant declared crops. Cannabis functions as a residual cash supplement and as risk-reducing diversification, particularly in years of garden closure, jute price collapse or paddy crop failure.^{[original research?]} Migration to other states for construction and service work remains the larger income strategy for most rural households.

No credible academic estimate of the total value of the West Bengal cannabis economy has been published. The most cited journalist estimate, that cross-border smuggling of foodgrain, fuel, garments, motor parts and other commodities generates "more than an estimated Rs 1,500 crore a year" and that illegal poppy cultivation and drug smuggling together yield "a few thousand crores of rupees," conflates cannabis with poppy and other commodities and was published in 2017. The figure should be treated as an order-of-magnitude indicator rather than a measurement.

Recent shifts (2020-2026)

The 2020 COVID-19 lockdown disrupted rail freight and the rural-to-urban dalal channel. The principal lasting adaptation was the consolidation of Telegram and Instagram-based dealer networks, which had existed since at least 2018 and became the dominant urban retail channel during the lockdown. Digital retail in Kolkata in 2024 to 2026 is structured around Telegram channels with hundreds to low-thousands of subscribers, with order placement by direct message and payment by UPI to mule accounts, delivered within the urban core by motorcycle. Instagram accounts function principally as discovery and reputation channels rather than direct sales channels.

Vape cartridges, edibles and isolates (CBD oil, "live resin") have entered the Kolkata urban market since approximately 2021, sourced principally from diaspora and air-courier channels via Bangkok, Dubai and US and Canada returnees. The 2024 Kolkata Bangkok-sourced international ring case is the principal documented seizure of this segment. Volumes remain small relative to flower but the price-per-gram is an order of magnitude higher.

Thailand's 2022 decriminalisation, Germany's Cannabisgesetz in force from 1 April 2024 and the US state-level legalisation wave have not, on the available evidence, produced direct supply effects in West Bengal beyond the small Bangkok-Kolkata premium import flow noted above. Their principal effect has been on Indian policy discourse, with the Vidhi Centre for Legal Policy, the Centre for Civil Society and individual parliamentarians including Dharamvir Gandhi's 2017 private member's bill (supported by former Central Bureau of Narcotics Commissioner Romesh Bhattacharji) generating a small but persistent legalisation debate. No legislative movement has occurred in West Bengal specifically.

See also

• West Bengal
• Cannabis in West Bengal
• Cannabis in Bengal Presidency under Colonial Rule
• Cannabis in Cooch Behar State
• Ganja Mahal
• Naogaon Ganja Cultivators' Co-operative Society
• Indian Hemp Drugs Commission
• Bengal Excise Act, 1909
• Narcotic Drugs and Psychotropic Substances Act, 1985
• Siliguri Corridor
• India–Bangladesh border
• Indo-Nepal border
• Burrabazar
• Cannabis in Bengali Cuisine
• Cannabis cultivation in Bengal