Cannabis has been part of South American history for nearly five centuries, yet its role on the continent has never been fixed. It arrived as an Old World plant carried through European colonial networks, was cultivated as hemp for fiber, entered popular medicine, became associated with enslaved African communities and rural traditions, and was later transformed into a prohibited drug under twentieth-century international policy. In the decades that followed, cannabis became connected with youth culture, political dissent, illicit agriculture, organized trafficking, home cultivation, medicinal activism, and eventually some of the world’s most ambitious experiments in legal regulation.
South America is also too diverse for a single cannabis story. Brazil’s history is shaped heavily by African cultural influence and racialized prohibition. Colombia became internationally famous for marijuana exports and legendary varieties such as Colombian Gold before cocaine transformed its drug economy. Paraguay emerged as one of the continent’s largest illicit cannabis producers. Uruguay, meanwhile, became the first country in the world to create a nationwide legal adult-use cannabis market. Argentina, Chile, Colombia, Brazil, and other countries have followed different paths toward medical access, decriminalization, cultivation rights, and industrial hemp. Together, these histories reveal how deeply cannabis has become woven into South American agriculture, politics, medicine, and culture.
Cannabis Arrives in Colonial South America
Cannabis is not native to South America. The plant developed in the Old World and reached the Americas through colonial trade and migration. Spanish authorities promoted hemp cultivation in parts of their empire because strong cannabis fiber was valuable for ropes, sails, textiles, rigging, and other materials essential to shipping. Historical accounts commonly place organized hemp cultivation in Chile by the middle of the sixteenth century, making the region one of the earliest areas in the Americas where Europeans deliberately introduced Cannabis sativa as an agricultural crop.
The original colonial objective was practical rather than recreational. Spain and Portugal wanted locally produced raw materials that could support maritime commerce and reduce dependence on imported hemp. Chile’s climate proved suitable in some areas, and hemp cultivation periodically received official encouragement. Similar experiments appeared elsewhere in Spanish America, although production fluctuated according to economics, labor availability, shipping needs, and competition from other fibers.
Cannabis nevertheless developed uses that colonial administrators had not necessarily intended. Once the plant entered South America, different populations incorporated it into their own traditions. The most important example occurred in Portuguese Brazil, where cannabis became tied to African cultural practices and eventually acquired a social identity completely different from the European hemp crop imagined by colonial planners.
Brazil and the African Roots of South American Cannabis Culture
Brazil holds a distinctive place in the history of cannabis in the Americas. Historical scholarship connects early psychoactive cannabis use in the country with enslaved Africans, particularly people brought from regions such as Angola. Brazilian terms including maconha, diamba, and liamba reflect African linguistic influences, while cannabis was at times referred to as fumo de Angola, or “Angolan tobacco.” Rather than entering Brazilian culture exclusively through European pharmacy or industrial hemp production, cannabis also arrived through people who already knew the plant as a psychoactive, medicinal, and cultural substance.
Use spread in rural communities and was adopted by some Indigenous populations as well. Cannabis appeared in folk healing and was associated with treatments for pain, menstrual discomfort, and other ailments. Historical reports also connected the plant with Afro-Brazilian spiritual and ceremonial traditions. These practices were often viewed suspiciously by authorities, particularly as Brazilian elites attempted to reshape the country after slavery and associate European customs with progress while portraying African traditions as primitive or dangerous.
That history matters because Brazilian cannabis prohibition cannot be separated completely from race and class. By the early twentieth century, public campaigns increasingly portrayed maconha as a drug of poor, Black, rural, or marginalized people. Cannabis became a symbol onto which social anxieties were projected. The same plant that had circulated in popular medicine was recast as a cause of madness, violence, and social disorder. These stereotypes would help justify increasingly punitive drug laws.
From Medicine to Prohibition
Cannabis was not regarded only as an intoxicant during the nineteenth century. South American doctors and pharmacists participated in the broader international medical interest that followed European research on Indian cannabis preparations. Tinctures, extracts, and other formulations appeared in pharmacies and medical discussions, where cannabis was considered for pain, spasms, sleep problems, and a range of other complaints. The pharmaceutical product and the cannabis smoked in poor rural communities could exist within the same society while being treated very differently.
That distinction gradually disappeared as international drug control expanded. During the early twentieth century, cannabis became incorporated into a growing system of narcotics regulation. The Geneva drug conventions of the 1920s helped internationalize restrictions, while individual South American governments created their own criminal laws. Later, the 1961 United Nations Single Convention on Narcotic Drugs placed cannabis firmly within global prohibition and encouraged participating states to suppress non-medical production and use.
The U.S.-backed War on Drugs intensified the process from the 1970s onward. South American drug policy became increasingly intertwined with policing, border security, crop eradication, extradition, and organized-crime policy. Cannabis was often legislated within the same broad anti-drug framework as cocaine despite major differences in risk, production, and consumer culture. The consequences were particularly significant for rural farmers, poor urban users, and communities located along trafficking routes.
Colombia, Colombian Gold and the Marijuana Boom
Colombia’s contribution to global cannabis culture extends far beyond modern medical cultivation. During the 1960s and especially the 1970s, Colombian marijuana became highly sought after in North America. The Caribbean coast, including areas around the Sierra Nevada de Santa Marta and La Guajira, developed into a major production and export zone. This period became known as the bonanza marimbera, or marijuana boom, when large quantities of Colombian cannabis were transported north by aircraft and ships.
Names such as Colombian Gold and Santa Marta Gold became legendary among cannabis consumers. These were not modern branded hybrids in the contemporary dispensary sense, but regional populations and selections associated with equatorial growing conditions and long flowering cycles. Colombian cannabis developed a reputation for uplifting, cerebral effects and distinctive aromas, helping establish the prestige of South American sativa genetics in international breeding. Colombian landrace ancestry would later appear in influential hybrids developed in North America and Europe.
The marijuana economy eventually declined as enforcement increased and cocaine became vastly more profitable. Yet cannabis never disappeared from Colombian culture. In 1994, the Constitutional Court struck down criminal penalties for possessing and consuming a personal dose, establishing an important principle of individual autonomy. Colombia created a regulated medical and scientific cannabis system in 2016 and subsequently built a licensed cultivation industry. Adult-use commercial legalization has repeatedly entered political debate, but as of 2026 Colombia has not followed Uruguay into a nationwide legal recreational market.
Paraguay and the Hidden Cannabis Economy
Paraguay occupies a very different place in South American cannabis history. For decades it has been identified as one of the continent’s largest sources of illicit marijuana, with extensive outdoor cultivation concentrated especially in eastern regions near the Brazilian border. Much of this cannabis has traditionally been exported rather than consumed solely within Paraguay, feeding enormous underground markets in Brazil, Argentina, and neighboring countries.
Paraguayan cannabis became particularly associated with compressed bricks commonly called prensado. Compression made large quantities easier to transport across borders but usually produced a product far removed from modern premium flower. Seeds, stems, oxidation, moisture, poor curing, and rough handling contributed to prensado’s reputation as cheap working-class marijuana rather than connoisseur cannabis. For millions of South American consumers, however, it was historically one of the most accessible forms of cannabis available.
The production economy also reveals why drug prohibition is not simply a question of consumer behavior. Cannabis cultivation in rural Paraguay has often been connected to poverty, limited agricultural opportunities, weak government presence, land inequality, and strong cross-border demand. Eradication campaigns may destroy crops without necessarily removing the economic incentives that cause farmers to plant again. The result has been a persistent cycle in which cannabis remains deeply embedded in informal rural economies despite decades of enforcement.
Chile, Argentina and the Southern Cone Grow Culture
Chile developed one of South America’s most visible modern cannabis cultures, influenced by both domestic cultivation and imported genetics. By the late twentieth and early twenty-first centuries, Chilean growers were increasingly connected to European and North American seed markets. Indoor cultivation, grow shops, cannabis fairs, activist groups, and cultivation organizations expanded, producing a scene less dependent on imported compressed marijuana than markets in some neighboring countries.
Chile’s legal environment has remained more complicated than full legalization. Personal consumption in private settings has not been treated identically to commercial trafficking, and courts have sometimes recognized circumstances involving personal cultivation, yet cannabis sales remain illegal outside authorized medical frameworks. The ambiguity helped create a strong activist and home-growing culture centered on questions of privacy, personal use, and the right to cultivate one’s own medicine.
Argentina followed a related but distinct path. Cannabis remained prohibited for recreational sale, but patient activism dramatically changed the medical debate. Families seeking cannabis treatments, particularly for epilepsy and other serious conditions, became highly visible advocates. Argentina enacted a medicinal cannabis law in 2017 and later expanded patient cultivation through the REPROCANN registry. The system created a legal route for registered patients and approved cultivators to grow cannabis for medical, therapeutic, or palliative purposes. The growth of patient associations helped transform cannabis from a countercultural cause into a healthcare and civil-rights issue.
Uruguay Changes the Global Cannabis Debate
The most dramatic policy change in South American cannabis history occurred in Uruguay. In December 2013, the country approved Law 19.172 and became the first nation in the world to establish legal nationwide regulation of adult-use cannabis. The policy was not designed around a North American-style commercial dispensary industry. Instead, Uruguay treated legalization primarily as a public-health and crime-reduction strategy intended to move consumers away from illegal trafficking networks.
The system created three legal access routes for registered adult residents: home cultivation, membership in regulated cannabis clubs, and purchases through participating pharmacies. State agencies oversee cultivation, licensing, distribution, and registration. Commercial branding and aggressive cannabis advertising are limited compared with markets in the United States and Canada, reflecting Uruguay’s philosophy that legalization should regulate an existing behavior rather than actively encourage consumption.
By 2026 the legal system had grown considerably, with more than 120,000 registered participants across pharmacy purchases, home growing, and cannabis clubs. Uruguay’s experience has become one of the world’s longest-running national experiments in adult-use regulation. Its importance extends far beyond the country’s small population. Before Uruguay, legalization was generally discussed as a theoretical possibility. After 2013, policymakers could study an operating national system and ask practical questions about price, supply, public health, criminal markets, home cultivation, and consumer registration.
Medical Cannabis and the New South American Industry
Medical cannabis has provided the most politically acceptable route toward reform across much of the continent. Colombia developed a licensed cultivation and manufacturing sector with ambitions to export pharmaceutical cannabis products. Argentina created a national medical program and a framework for patient cultivation. Brazil gradually expanded access to prescribed cannabis products and, following major court and regulatory developments, established new rules in 2026 permitting tightly controlled cultivation by authorized legal entities for medicinal and pharmaceutical purposes.
Brazil also underwent an important shift in personal-use law. In 2024, the Supreme Federal Court ruled that possessing cannabis for personal use should not be treated as a criminal offense. The court established a provisional presumption of personal use for possession of up to 40 grams or six female plants, although the substance can still be seized and administrative measures may apply. Trafficking, unlicensed commercial sale, and broader recreational production remain illegal. The ruling therefore represents decriminalization rather than legalization.
Other countries have adopted medical programs of varying scope, and industrial hemp has attracted interest as governments examine opportunities in fiber, food, cosmetics, construction materials, and cannabinoid production. The emerging industry has created a striking reversal: a plant once targeted almost exclusively through police eradication programs is now grown under licenses, studied by universities, prescribed by doctors, and promoted as an agricultural export opportunity.
Cannabis Culture in South America Today
Modern South American cannabis culture exists at the intersection of global trends and deeply local traditions. Consumers follow American and European genetics, solventless hash techniques, vaporizer technology, rosin production, terpene science, and cannabis competitions through social media. Indoor cultivation has become sophisticated, and growers in cities from Buenos Aires and Santiago to Bogotá, Montevideo, and São Paulo work with many of the same genetics found in California, Barcelona, or Amsterdam.
At the same time, regional identities remain strong. Colombian heritage cultivars still carry historical prestige. Paraguayan prensado remains symbolic of the prohibition-era mass market. Uruguay’s cannabis clubs have created a social model different from commercial dispensaries. Argentine patient organizations have made medicinal cultivation a form of political activism, while Brazil’s cannabis debate continues to confront the racial inequalities created by drug enforcement.
The language surrounding cannabis has changed as well. Marijuana is increasingly discussed in terms of cannabinoids, cultivars, medicine, regulation, patient rights, harm reduction, and agricultural development rather than exclusively through criminal terminology. That change does not mean stigma has disappeared. Arrests, illicit trafficking, unequal enforcement, and political resistance remain part of the South American cannabis landscape. What has changed is that prohibition is no longer the only policy imaginable.
Final Thoughts on Cannabis History and Culture in South America
Cannabis in South America began as an imported plant but became thoroughly woven into the continent’s history. Colonial governments wanted hemp for rope and fiber. Enslaved Africans brought their own knowledge and traditions to Brazil. Rural communities adopted cannabis as folk medicine and an intoxicant. Governments later criminalized it, international trafficking transformed its economics, and countercultures turned it into a symbol of personal freedom.
During the twentieth century, Colombian marijuana entered global popular culture, Paraguayan cultivation supplied regional underground markets, and home growers throughout the continent quietly preserved cannabis culture despite prohibition. In the twenty-first century, patients and activists forced another transformation. Uruguay legalized adult use, Colombia built a medical cannabis industry, Argentina protected registered medical cultivation, and Brazil moved toward decriminalization and regulated medicinal production.
South America’s cannabis story is therefore not a straight progression from prohibition to legalization. It is a continuing argument over agriculture, medicine, race, individual liberty, organized crime, public health, and the authority of governments to regulate private behavior. Different countries will continue answering those questions differently. But after nearly five hundred years on the continent, cannabis is no longer an outsider. It has become part of South American history itself.
