Kratom: The Southeast Asian Tree That Took a Century to Reach the West

Kratom is a tropical evergreen, Mitragyna speciosa to botanists and the first surprise for most people is the family it belongs to: Rubiaceae, the coffee family. That kinship is not just trivia. Like it’s famous cousin, kratom’s story is a story about labour, about leaves chewed and brewed by working people long before anyone thought to put the plant in a branded pouch and about what happens to a centuries-old rural custom when the global market finally notices it.

The tree wants heat and humidity, which is why it’s native range maps so neatly onto Thailand, Indonesia, Malaysia and Myanmar. It grows tall, the leaves are picked, dried and ground and for most of the plant’s recorded history that was a local affair conducted within walking distance of the tree.

What the tradition actually was

The polite Western summaries tend to go vague at this point, so it is worth being plain. In rural Thailand and Malaysia, kratom leaves were chewed fresh or brewed as tea by farmers and manual labourers as a mild stimulant for long days in the heat, roughly the role coffee plays elsewhere and coca has played in the Andes. Villages brewed it socially, some communities folded it into hospitality and custom and knowledge of the plant passed through families the way any working tradition does. It was not exotic to the people who used it. It was Tuesday.

The practice varied by region, as these things always do and the plant sat comfortably inside ordinary life for generations, which makes what happened next in Thailand genuinely strange.

Thailand banned it in 1943 and the reason was revenue

The oddest chapter in kratom’s history is that it’s ban in the country most associated with it had less to do with health than with tax. In the 1940s the Thai government drew significant income from the regulated opium trade and kratom, cheap and growing wild, was cutting into that revenue as labourers used it in place of taxed opium. The Kratom Act of 1943 outlawed the plant and planting a tree became illegal in the land where it grows natively, a legal situation that persisted, with varying enforcement, for nearly eight decades.

Then it reversed. In 2021 Thailand removed kratom from it’s narcotics list, allowing traditional use and licensed commercial activity and the reversal is quietly one of the more interesting drug-policy experiments running anywhere, a country re-legalising it’s own suppressed folk custom and trying to build a regulated industry on top of it. Unlicensed export remains restricted, which brings us to the country actually supplying the world.

Indonesia grows the world’s supply

While Thailand spent decades prohibiting the tree, Indonesia became the engine of the modern trade. Smallholder farmers, particularly in West Kalimantan on Borneo, cultivate kratom as a serious cash crop and for some river communities it has become the dominant source of income. Leaves are harvested, dried and milled, then exported by the tonne, overwhelmingly to the United States.

The commercial layer added at the far end of that supply chain is it’s own study in marketing. Browse a large American vendor, mitragaia is one of the bigger catalogues at mitragaia and you will find the plant sorted into dozens of named strains and coloured veins, a taxonomy that owes more to coffee-roast branding than to anything a Kalimantan farmer would recognise. The tradition supplied the leaf. The market supplied the vocabulary.

The legal map, honestly drawn

Anyone reading about kratom deserves the unglamorous paragraph most cultural histories skip.

In the United Kingdom, the sale, supply and import of kratom are banned under the Psychoactive Substances Act 2016. Possession is not itself an offence, but no vendor can lawfully sell it here and that includes shipping it in. Australia, Malaysia, Japan and a number of European countries prohibit it outright. In the United States the natural leaf is not federally scheduled, though the FDA has never approved it for any use and warns against it, several states ban it entirely and in 2026 federal regulators moved against concentrated 7-hydroxymitragynine products specifically, the potent extract tablets and shots that bear little resemblance to the traditional leaf.

And the health picture belongs in the same honest paragraph. Kratom’s active compounds act on opioid receptors at higher amounts, dependence and withdrawal are documented and the modern concentrated products carry risks the traditional fresh leaf never posed. None of that erases the cultural history. It does mean the plant deserves the same clear-eyed treatment as any other psychoactive tradition, respect without romance.

Respecting where it came from

There is a version of this story the marketing tells, all ancient wisdom and tropical serenity and a truer version that is more interesting: a working plant, used by working people, banned for reasons of state revenue, revived as an export economy, renamed by foreign retailers and now argued over by regulators on three continents. For the communities of Southeast Asia, kratom remains what it always was, part of the local landscape, family custom and regional identity. Learning that history properly, including it’s inconvenient chapters, is a better form of respect than any amount of soft-focus reverence and it is the least the plant’s new global audience owes the people who kept the tradition for two hundred years before anyone offered them a distribution deal.