Also known as: dagga in Southern Africa · bangi on the Swahili coast · diamba in Central Africa

Cannabis Culture in Sub-Saharan Africa During the 1900s

From pre-colonial trade to colonial prohibition to export economies in a century of transformation.

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Published May 30, 2026

Last reviewed Oct 30, 2026

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Cannabis in Sub-Saharan Africa didn't arrive in 1900—it had been used for centuries. What changed in the 20th century was not the plant but the law. Colonial authorities criminalized it as a labor and race issue, not a health one. Later, as export markets opened, Africa became the world's largest producer by area, though often under low yields and high legal risk. Marketing names like 'Durban Poison' are mostly 1970s–80s Western creations, not ancient strain traditions.

Pre-1900: Cannabis was already established trade goods

Cannabis had been present in parts of Sub-Saharan Africa for at least 600 years before the 20th century began. Archaeological evidence—including smoking pipes from 14th-century Ethiopia—indicates ritual or ceremonial use well before European contact Strong evidence^[1]. The plant almost certainly arrived via Indian Ocean trade routes, with Arab and Swahili merchants moving it down the East African coast, and from there inland along established trade and migration corridors Strong evidence^[2].

By 1900, distinct regional naming conventions had developed: dagga among Khoekhoe and later Afrikaans speakers in Southern Africa; bangi (derived from Hindi/Arabic bhang) on the Swahili coast; diamba or liamba across the Congo basin and Angola; and matokwane among Sotho-Tswana groups. In the Kasai region of what is now the Democratic Republic of the Congo, the Bashilenge people had reorganized parts of their political and religious life around hemp smoking by the late 19th century—a movement documented by German explorer Hermann von Wissmann in the 1880s as the Bena Riamba ("sons of hemp") Strong evidence.

Cannabis was not exotic, dangerous, or notably controversial in most of these contexts. It was a crop with established cultural roles: ritual, medicine, fiber, and social practice.

Colonial prohibition (1900s–1920s): From tolerated crop to contraband

The early 20th century saw a decisive legal turn. What had been a regulated or tolerated local crop became criminal. South Africa led the way, banning cultivation, sale, and use of dagga under the 1922 Customs and Excises Duty Amendment Act. South Africa then successfully pressed the issue at the 1925 Second International Opium Convention in Geneva, achieving international scheduling of "Indian hemp" Strong evidence^[3]. The South African delegation framed dagga as a threat to mine labor productivity and settler security—language that would shape prohibition rhetoric for decades.

British East Africa (Kenya, Uganda, Tanzania) restricted cannabis through the 1913 Opium Ordinance and subsequent amendments. The Belgian Congo banned chanvre in 1903. French West and Equatorial Africa moved more slowly but had region-wide controls by the 1920s. These bans were not primarily public-health measures in the modern sense. Archival evidence and colonial submissions to international bodies show that labor discipline, missionary ideology, and racial anxiety—not drug toxicology—drove the criminalization Strong evidence^[3]^[4].

Enforcement remained patchy outside major urban and mining centers. Rural cultivation continued more openly in places like Lesotho's Maluti mountains, the Transkei, and the Kasai region. The key shift was legal status: growers and users were now criminals on paper, even where enforcement was loose.

Labor migration and smoking culture (1900s–1950s)

The single most important cultural force on 20th-century African cannabis was migrant labor, particularly the South African gold and diamond mines. Workers from Mozambique, Lesotho, Malawi (then Nyasaland), and Zimbabwe cycled through the Witwatersrand on contracts, and cannabis moved with them. Historian Chris Duvall's research documents how the mine compounds became sites of intense cross-cultural cannabis exchange, blending Sotho, Zulu, Tsonga, and Chewa smoking practices Strong evidence^[2].

During this era, iconic Southern African smoking devices—variously called a gourd, ghoodja, or splif—and the practice of smoking through a hollowed cow horn spread more widely among migrant workers and home communities. Earth pipes (smoking through a hole in the ground) were documented across the region but appear to have deeper roots that predate this period Weak / limited^[1].

A common historical claim reversed: that Rastafarianism brought cannabis sacrament to Africa. In fact, Rastafari emerged in 1930s Jamaica, drawing on Pan-Africanism and on ganja practices that Indian indentured laborers had brought to the Caribbean. It later returned to Africa via reggae and the back-to-Africa movement, especially from the 1970s onward, layering onto much older African cannabis traditions rather than founding them Strong evidence^[5].

The apartheid era and intensified criminalization (1930s–1980s)

From the 1930s through the 1980s, South African authorities ran one of the continent's most aggressive anti-cannabis campaigns. Police raids on Pondoland and the Transkei, aerial spraying programs, and custodial sentences for possession defined the era. Apartheid-era propaganda blamed dagga for interracial sex, communist infiltration, and moral decay—a moral panic well-documented in newspaper archives Strong evidence.

Meanwhile, cannabis cultivars from KwaZulu-Natal were being selected and refined by smallholder farmers. These later entered the international market under the name "Durban Poison," which is itself a Western export-market label that became widespread in the 1970s–80s, not a traditional African strain name Weak / limited. The genuine landrace material from the region is genetically distinct, but the marketing mythology surrounding it—uniformly high THC, pure sativa lineage, ancient unbroken pedigree—is largely retrospective storytelling.

In Central Africa, Mobutu's Zaire alternated between crackdowns and tolerance. In West Africa, cannabis cultivation expanded sharply after the 1970s as Ghanaian and Nigerian producers supplied domestic and European markets. This shift resulted from economic crisis and market opportunity; popular accounts credit demobilized soldiers returning from World War II's Burma campaign with popularizing smoking in coastal West Africa, though archival documentation of this claim remains limited Weak / limited^[6].

Export boom and the modern drug war (1980s–2000)

By the 1980s and 1990s, several Sub-Saharan countries had become significant cannabis producers for European markets. Lesotho, Malawi, Eswatini, Nigeria, Ghana, and the eastern DRC all developed export sectors. The UN Office on Drugs and Crime identified the African continent as the world's largest cannabis producer by area cultivated starting in the 1990s, though per-hectare yields remained low compared to indoor Western operations Strong evidence^[7].

This period also saw the commercialization and marketing of regional brand names—Malawi Gold, Swazi Gold, Durban Poison, Congo Black—many of which were constructed primarily for European and American buyers rather than representing genuine local taxonomies. Local growers and communities often used different names that never entered the international vocabulary.

Throughout this era, cannabis remained illegal in almost every Sub-Saharan nation, with only partial exceptions for customary rural tolerance in some areas. South Africa's Constitutional Court would not decriminalize personal use until 2018; Lesotho would not license medical cultivation until 2017. These changes belong to the 21st century but were built on a century of failed prohibition.

Myths and what the historical record actually shows

Several widespread claims deserve scrutiny against the historical evidence:

"Africa is the original home of cannabis." No. Cannabis almost certainly originated in Central Asia and reached Africa via trade networks, probably more than once Strong evidence^[2]. This is not a minor point—it distinguishes the continent's long cannabis history from any claim of native origin.

"Rastafarianism is an African religion that gave the world ganja." Rastafari is Caribbean in origin, Pan-Africanist in ideology, and post-dates established African cannabis use by centuries Strong evidence^[5]. Its influence on African cannabis culture is real and significant from the 1970s onward, but it did not introduce the plant or the practice.

"Traditional African strains are pure sativa landraces unchanged for centuries." Genetic research suggests African cannabis populations are diverse and have exchanged genes with Asian and later European/American material throughout the 20th century Disputed. Marketing names obscure this complexity.

"Colonial bans were about protecting Africans from a dangerous drug." The archival record—including South Africa's own submissions to the League of Nations and Geneva conventions—makes clear that labor control, settler anxiety, and racial ideology were the dominant motives Strong evidence^[3]^[4]. Public health as we now understand it was not the driver.

Sources and further reading

The most comprehensive and careful scholarly treatment of 20th-century African cannabis is Chris Duvall's The African Roots of Marijuana (2019), which is also notably disciplined about distinguishing evidence from folklore ^[2]. For South African and apartheid-era history, Carina Paterson's peer-reviewed work on Southern African cannabis trade and James H. Mills's Cannabis Britannica on colonial and imperial policy provide essential context ^[3]^[4]. Brian du Toit's survey of cannabis in multi-ethnic South Africa offers valuable ethnographic and historical detail.

On international drug policy and the 1925 Geneva convention, the UNODC's overview of African cannabis production and UN Drug Treaties and Cannabis provide policy background. For Rastafari and its Caribbean origins, Barry Chevannes's Rastafari: Roots and Ideology is the foundational text ^[5].

Sources

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