Cannabis in Africa — Dagga, Riamba & the Origins of Smoking

Cannabis arrived on the continent around 1000 CE via Indian Ocean trade. Africa did not originate it — but Africa may have invented the technology that changed how the world consumed it.

Africa's role in cannabis history has been systematically underestimated. Western accounts typically treat the continent as a passive recipient of cannabis from Asia, ignoring the African innovations that transformed cannabis from an ingested plant into a smoked one. Chris Duvall's groundbreaking The African Roots of Marijuana (Duke University Press, 2019) recentered Africa in this history — arguing that the continent served as the incubator for smoking technology and may even have given us the word "marijuana."

Arrival via Indian Ocean trade

~1000 CE

Cannabis reaches East Africa

Cannabis arrived on the African continent via Indian Ocean trade networks, likely carried by Arab and Indian merchants operating along the East African coast. The Swahili trading cities — Kilwa, Mombasa, Zanzibar — served as entry points from which cannabis spread inland along established trade routes over the following centuries.

The timing is important because it places cannabis in Africa roughly a millennium before European colonization. By the time Portuguese, Dutch, and British colonizers arrived, cannabis was already deeply embedded in the cultures and economies of sub-Saharan Africa — a fact that colonial authorities found inconvenient and frequently misrepresented.

Africa as incubator of smoking technology

Duvall's central argument is that Africa was not merely a consumer of cannabis but the innovator of a critical technology: smoking. Before African contact, cannabis was eaten, drunk as an infusion, or burned on hot stones and inhaled in enclosed spaces (as at Jirzankal). The development of the smoking pipe — a device for direct inhalation of combusted plant material — appears to have occurred in sub-Saharan Africa, likely among Bantu-speaking peoples, and was subsequently adopted for tobacco and other substances.

Africa was the incubator for the pipe-smoking technology that would transform cannabis consumption worldwide. The continent's role in this history has been obscured by colonial and racist narratives that denied African innovation.
Chris S. Duvall, <em>The African Roots of Marijuana</em> (Duke University Press, 2019)

If Duvall's thesis is correct — and the archaeological and linguistic evidence he marshals is substantial — then the most common method of cannabis consumption worldwide is an African invention. This reframing is significant not only for cannabis history but for the broader history of technology and cultural exchange.

Dagga and the Khoisan

In southern Africa, cannabis became known as dagga — a term derived from Khoisan languages. Dagga use was widespread among indigenous southern African peoples well before European settlement. The Khoisan adoption of cannabis represents one of the deepest integrations of the plant into an indigenous African culture, predating and persisting through Dutch and British colonial rule.

Colonial authorities in the Cape Colony and later South Africa treated dagga use as evidence of indigenous degeneracy — a pattern that precisely mirrors the racialization of cannabis in the United States. The plant was the same; the politics of racial control were the same; only the continent differed.

The word "marijuana"

The Bashilenge "cult of riamba"

1881

Bashilenge cult described by European explorers

The German explorers Paul Pogge and Hermann von Wissmann described the Bashilenge (or Bena Riamba — "sons of hemp") people of the Kasai region in present-day Democratic Republic of Congo. The Bashilenge had organized significant aspects of their society around cannabis cultivation and consumption, with riamba serving as a social sacrament, a legal bond, and a symbol of group identity.

Common claimThe Bashilenge "cult of riamba" was an ancient African tradition stretching back centuries or millennia, proving that cannabis has deep indigenous roots in Central Africa.

What the evidence showsThe Bashilenge cannabis culture described by Pogge and Wissmann dates to the mid-to-late 19th century. The movement appears to have been led by Kalamba Mukenge, a chief who used cannabis as a tool of social cohesion and political organization. While cannabis had been present in the region for centuries, the specific "cult of riamba" as described by European observers was a contemporary phenomenon, not an ancient one. — Pogge and Wissmann expedition accounts, 1881

The Bashilenge case is instructive for what it reveals about both African cannabis culture and European observation of it. Wissmann described a society that had replaced alcohol with cannabis, used it in legal proceedings, and treated it as a bond of peace between warring groups. Kalamba Mukenge, the chief most associated with the movement, used riamba strategically — as a unifying social institution for peoples brought together under his authority.

European observers called it a "cult" because that was the language available to them for describing non-Christian communal practices. A more accurate description might be a political and social movement that used cannabis as its central symbol and sacrament — not unlike the role of wine in European Christian communion, though the comparison would have horrified Wissmann.

What the African record establishes

Africa's cannabis history overturns the passive-recipient narrative and establishes the continent as a site of innovation and cultural integration:

~1000 CE: Cannabis arrives via Indian Ocean trade — a full millennium before European colonization.
Bantu smoking technology: The pipe-smoking method that would become the world's dominant mode of cannabis consumption likely originated in sub-Saharan Africa.
Linguistic legacy: The Bantu terms riamba, diamba, and mariamba may be the etymological ancestors of "marijuana."
Dagga in the south: Deep integration of cannabis into Khoisan and broader southern African cultures, predating and surviving colonialism.
Bashilenge, 19th century: A documented case of cannabis as social sacrament and political institution — real, important, but not ancient.