ONE WILD WORLD — NEWSLETTER

ISSUE #044 · THINGS COMPANIES · AUGUST 2026

There is a version of the banana in your kitchen that is almost too neat to be true. It has no seeds. It is exactly the same shape as every other banana in the shop. It ripens on cue when a specific gas is pumped into a warehouse in Rotterdam or New Jersey. And it is, in the strict biological sense, a clone — genetically identical to every other one you have ever eaten, and to every one your neighbour has ever eaten, and to every one on every supermarket shelf in the Western world.

It has that shape because a Victorian duke grew it in a greenhouse, gave it his family name, and sent cuttings to a missionary who was later killed and eaten in Vanuatu.

It has no seeds because it is sterile, and the little brown specks running down its centre are ovules that never developed.

It exists in your kitchen at all because a fungus wiped out the banana your grandparents ate, and it will probably vanish from your kitchen within the next fifteen to twenty years, because that fungus’s successor has now reached Ecuador.

None of that is exaggeration. All of it is on the record. This is the story of how a single plant from an English aristocrat’s hothouse became the world’s most-eaten fruit, and how the shape of that story guarantees the plant’s own extinction.

In 1834, William Cavendish, sixth Duke of Devonshire and known to history as the Bachelor Duke, received a specimen of a small banana plant from a shipment that had recently arrived in England from Mauritius. His head gardener at Chatsworth House in Derbyshire was Joseph Paxton, then in his early thirties, later to design the Crystal Palace and be knighted. Paxton was a prodigy of glasshouse horticulture. He built the duke a hothouse, filled it with rich loam soil and rotted dung, held the temperature between 18 and 30 degrees, and coaxed the banana plant into flowering by November of the following year.

The first fruit appeared in May 1836. One of them won a medal at that summer’s Horticultural Society show. Paxton, who had a taste for flattery, described the plant to the botanical literature as Musa cavendishii — the Duke of Devonshire’s banana.

The duke, delighted, gave two cases of specimens to a Congregationalist missionary named John Williams, who was bound for the South Pacific. Williams planted them in Samoa. Then he sailed on to the island of Erromango in what is now Vanuatu, where the local people killed and ate him. The bananas survived. They spread through Polynesia, then to the Canary Islands, then very slowly, over the next century, into commercial cultivation.

For nearly a hundred years, nobody paid the Duke of Devonshire’s banana much attention. It was small, it bruised easily, and there was a better banana already dominating the export trade.

Between the 1870s and the 1950s, effectively every banana sold outside the tropics was a different variety, called the Gros Michel — French for Big Michael, often shortened to Big Mike. Bigger than the Cavendish, sweeter than the Cavendish, with a thicker peel that shrugged off the rough handling of a nineteenth-century steamship, the Gros Michel was the perfect commercial fruit. It was, for a period of about eighty years, the banana — the singular noun, understood without a modifier, meaning that yellow thing.

Its business was built by two American shipping companies — United Fruit and Standard Fruit, ancestors of Chiquita and Dole — who cleared enormous tracts of rainforest in Costa Rica, Honduras, Guatemala and Panama, laid railways to the coast, and shipped Big Mike to New York and New Orleans by the trainload. It was those countries the term “banana republic” was invented to describe. The nickname was not a joke about their economies; it was a description of who ran them.

Then, quietly, in Suriname in 1876, a botanist noticed that some Gros Michel plants were wilting and dying from the roots up. He called it Panama disease, after the region where it soon spread. The cause is a soil fungus called Fusarium oxysporum. It enters through a wound in the roots, climbs into the vascular system of the plant, and blocks the plant’s ability to draw water. There is no cure. There has never been a cure. And once the fungus is in a plantation, it stays in the soil for decades.

Because every Gros Michel banana was itself a clone, propagated by cutting off suckers of an existing plant and replanting them, every plant in an infected field was equally susceptible. And the ones next door. And the ones a train ride away. Over the next eighty years, the fungus — by then called Race 1 — worked its way north from Panama through the Caribbean, through Central America, into the Colombian coast. Plantations were burned to the ground. Growers moved a hundred miles and planted afresh. The fungus caught up.

By 1965 the Gros Michel was commercially extinct in the Americas. Some plantations still hold on in Africa and small pockets of Asia, but the fruit that had built United Fruit into one of the twentieth century’s most powerful corporations was gone from every shop in the Western world.

The industry needed a replacement banana, urgently. It needed one that was immune to Race 1, that could survive ocean transport, that could ripen predictably on cue, and — crucially — that could be scaled up fast enough to fill the gap in the world’s fruit bowl before consumers noticed.

The Cavendish, the Duke of Devonshire’s greenhouse curio, met three of those requirements. It was resistant to Race 1. It could be grown from cuttings at industrial pace. It could survive a boat ride. It failed on almost everything else. Its peel bruised so easily that the entire shipping infrastructure of the banana trade had to be rebuilt around the fruit — padded boxes, careful stacking, refrigerated holds, artificial ripening chambers at the port. Its flavour was blander. Its shape was smaller. Consumers, at the time, complained.

They complained, and they got used to it. Within a decade the Gros Michel was a memory. By 1970 essentially every dessert banana in a Western supermarket was a Cavendish, and effectively every one of them was a genetic clone of the plant Paxton had coaxed to fruit at Chatsworth in 1836.

This is not a loose figure of speech. The Cavendish is triploid: it carries three sets of chromosomes instead of the usual two, which makes it sterile. The little dark specks you can see if you cut one lengthways are aborted ovules — the plant’s attempt at seeds that never developed. Every Cavendish plant on Earth is propagated by cutting a sucker off an existing corm or, since the 1970s, by growing plantlets in tissue culture from cells of an existing plant. There is no sexual reproduction. There is no genetic variation. Every plant in every commercial plantation on the planet, from Ecuador to the Philippines to Costa Rica to Cameroon, is nearly the same organism, planted many billions of times over.

The Cavendish’s immunity to Race 1 was, from the beginning, temporary. Race 1 is a strain, not a species. Fungi mutate. In Taiwan in the late 1960s a plant pathologist noticed that Cavendish plantations, once considered untouchable, were dying with symptoms that looked very much like Panama disease. It was Panama disease. The pathogen was Fusarium oxysporum again, in a new race, first classified in the 1990s as Tropical Race 4 — TR4.

TR4 does everything Race 1 did, and it does it to Cavendish. It kills through the roots, blocks the vascular system, and persists in soil for decades after any single plant is destroyed. Fungicides do not work on it. Quarantine helps, but only if quarantine is perfectly enforced, which it never is. Spores travel on boots, on tyres, in irrigation water, in the mud caked to the underside of a tractor. Once it is in a country, it does not leave.

For twenty years it moved slowly through Asia. Then, in 2013, it turned up in Jordan and in northern Mozambique — the first confirmed jumps out of Southeast Asia. In 2019 it arrived in Colombia, and the Colombian government declared a national emergency. Peru followed in 2021. Venezuela in 2023. And in late September 2025 the Ecuadorian government confirmed the fungus had been detected in a plantation in Los Ríos province.

Ecuador matters because Ecuador is not just any exporter. It is the exporter. In 2023 the country shipped roughly six million tonnes of bananas, which is around a third of all bananas in international trade. The four large brand names — Chiquita, Dole, Del Monte, Fyffes — all source substantially from Ecuadorian growers. A serious outbreak in Ecuador is a serious outbreak in the world market.

The reason all this is happening a second time — in the same industry, with the same disease, on the same schedule — is not that no one saw it coming. Plant pathologists have been warning about the vulnerability of Cavendish monoculture since the late 1960s. Papers, conferences, books, alarms. The reason it is happening anyway is that the entire economic architecture of the modern banana trade requires that every banana be identical.

Supermarket buyers write purchase contracts that specify shape and size to within a few millimetres. Ripening warehouses are calibrated for one variety’s response to ethylene gas. Cardboard boxes, refrigerated container settings, artificial ripening times, cutting and stacking machines, the shape of the branded sticker — all of it assumes a Cavendish. Consumers in London and New York have been trained for two generations to expect one exact shape of yellow fruit, ripening the same way, tasting the same, at the same price.

So the plant of choice is a clone, and it has to be a clone, because the trade cannot handle variety. And a clone, in the presence of an evolving fungus, is exactly the ingredient that fungus needs. The industry built the trap it is now living in.

There are alternatives being worked on. Belgian and Honduran breeders are attempting conventional crossbreeding with fertile wild bananas. Israeli, Australian and Chinese labs are attempting CRISPR gene-edits to give the Cavendish resistance. A Queensland team has field-tested a genetically modified Cavendish variant, called QCAV-4, that carries a gene from a wild banana species and has shown resistance in trials. Some countries have granted it approval. Consumers are, so far, wary. Supermarkets are, so far, cautious.

Every solution runs into the same wall. Any replacement has to yield the same amount per hectare, survive an ocean crossing without bruising, ripen on the same schedule, taste like what people expect, and — crucially — grow in soil that is already contaminated with TR4 spores that are not going anywhere. Even a perfect replacement is only a delay. If the world plants a single new resistant clone, the same story starts again.

The banana is, in one sense, a niche problem. Nobody in the West is going to starve if it disappears. But bananas are the fourth most-consumed food crop in the world after rice, wheat and maize. Around 400 million people in the tropics get between 15 and 27 per cent of their daily calories from cooking bananas and plantains — not the dessert Cavendish, but close cousins of it, propagated the same way, vulnerable to the same fungi. When plant pathologists talk about the banana as a warning signal, this is what they mean. It is the visible tip of a much larger problem: modern industrial agriculture depends on monocultures, and monocultures fail.

Rice is a monoculture. Wheat is a monoculture. So is coffee. So is chocolate. So, for that matter, is much of your pharmacy. The banana is not a special case. It is the case that has already happened once, is happening again, and will keep happening until someone breaks the pattern.

The banana in your fruit bowl is a genetic clone of one plant grown in a duke’s greenhouse in 1834.

Its predecessor was wiped out by a fungus. Its replacement is being wiped out by the same fungus’s children. Nothing about the industry that produces it has changed.

Chatsworth House, “The Chatsworth Banana” (Chatsworth Trust, official history); Wikipedia biographical entries on William Cavendish, 6th Duke of Devonshire, and on Sir Joseph Paxton; Chatsworth Trust archives on Musa cavendishii, first fruiting May 1836.

Randy Ploetz, “Fusarium wilt of banana is caused by several pathogens referred to as Fusarium oxysporum f. sp. cubense” (Phytopathology, 2006); PLOS Pathogens, “Worse Comes to Worst: Bananas and Panama Disease” (Ordonez, Seidl, Waalwijk et al., 2015); the definitive academic reference for the Gros Michel-to-Cavendish transition and the TR4 arrival.

International Plant Protection Convention (IPPC) and FAO, Global Programme on Fusarium TR4, status reports 2019–2025. Source for country-by-country spread and the Ecuador confirmation of late September 2025.

Britannica and Encyclopedia.com, biographical entries on the Gros Michel banana, the Cavendish banana, John Williams (missionary), and Joseph Paxton.

Newsweek and The Conversation coverage of the Cavendish monoculture problem (Bebber, Studholme et al.); U.S. International Trade Commission (USITC) executive briefing on banana trade share (Cavendish ≈ 95–99 per cent of export volume).

Inverse and Science Friday, coverage of the isoamyl acetate / banana flavour question, quoting food-flavour historian Nadia Berenstein; the corrective on the popular Gros Michel-flavour myth.

Coverage of the QCAV-4 GM banana (Queensland University of Technology, Dale lab); news coverage of Colombia’s 2019 national emergency, Peru 2021, Venezuela 2023, and the Ecuador announcement of late September 2025 (Ecofin Agency, Reuters).