What Is Conilon Coffee? Not Just Brazilian Robusta

Conilon coffee is often described as robusta with a Brazilian accent, but the botany tells a more interesting story. Conilon is one genetic group of the species Coffea canephora, and robusta, in the strict sense, is a sister group of the same species.

That distinction matters more than it first appears. Brazilian statistics, breeders and coffee traders all use the word "conilon", and they do not always mean the same thing. A bag labeled robusta may even contain coffee that a Brazilian agronomist would call something else. The story runs from a misspelled African river to the lowland farms of Espírito Santo, where a coffee once nicknamed veneno now carries a geographical indication.

What conilon coffee is, botanically

One species, several groups

Conilon belongs to Coffea canephora, the species the coffee trade sells mostly as robusta, not to Coffea arabica. The species as a whole and robusta in general have a broader story, as does the comparison between arabica and robusta; conilon is one branch of that family. Within C. canephora, geneticists recognize several genetic groups. Perfect Daily Grind, drawing on Christophe Montagnon of RD2 Vision, explains that conilon and robusta plants belong to the same species but are considered different genetic groups. Researchers at Embrapa, the Brazilian agricultural research body, describe them the same way, as two "botanical varieties" of C. canephora.

SG1, or var. kouilou

In the genetic literature, conilon has a more technical label. Geneticists place conilon in a subgroup of canephora's Congolese group, known as SG1 or C. canephora var. kouilou. That is the reading of a 2019 study in the Brazilian journal Bragantia and of Montagnon's account in Perfect Daily Grind. The paper notes that in Brazil these plants are known as conilon coffee, while the other subgroups fall under var. robusta. Both accounts draw on Montagnon's work, so treat the SG1 label as the geneticists' shorthand rather than a settled final word.

Robusta in the narrow sense, Montagnon told Perfect Daily Grind, is the other Congolese group, with coffees mostly from the Democratic Republic of Congo and Uganda. The Bragantia authors add a curious detail: SG1 plants look like those of canephora's separate Guinean group.

Why conilon is more than robusta's Brazilian name

You will often read that conilon is simply Brazil's word for robusta. The two botanical papers cited here do not support that shortcut: Embrapa and the Bragantia team both keep conilon and robusta apart as distinct varieties of the same species. Where the shortcut comes from is the market: as Reuters put it in a 2026 report, canephora prices are "traded as robusta", whatever the botanical group in the bag. The fairest summary is this: conilon is a group of canephora that Brazil grows and names; robusta is a sister group; and the trade often sells both under the robusta label.

A name born from a spelling slip

The word "conilon" takes its name from a river. According to Montagnon's account in Perfect Daily Grind, conilon plants were first found along the Kouilou River in west-central Africa. When the name was written down, Kouilou was misspelled as "Konilon", which later became "conilon".

The botanical name keeps the river's spelling, in lowercase: C. canephora var. kouilou.

The plant: conilon versus robusta-type canephora

Smaller and tougher in a drought

Two traits separate conilon from robusta-type canephora in the accounts of both Embrapa and Perfect Daily Grind. Embrapa researchers describe the conilon variety by its "small size, greater tolerance to water stress". Perfect Daily Grind agrees on both counts: conilon plants do not grow as tall as typical robustas, though they have a larger canopy, and they are often more resistant to drought. "Often" is the honest word here: drought tolerance is a tendency of the group, not a guarantee for every plant. The same account notes that conilon plants mature earlier and have smaller leaves.

The Bragantia paper describes the other subgroups as having large, wide leaves and large grains, which implies, without stating it outright, that conilon beans tend to be smaller.

The trade-off: rust

Conilon has a weak spot, though. According to Embrapa, the robusta variety has "greater resistance to rust and to root-knot nematode". The Bragantia paper agrees that the non-SG1 subgroups are highly resistant to rust.

Why conilon is planted as a team of clones

Canephora has a botanical quirk that shapes how it is farmed. Embrapa's 2020 paper states that fruit production in C. canephora depends on pollination between compatible plants. Brazilian breeders work with this rather than against it. A 2018 study of Espírito Santo coffees notes that each of the Incaper clonal conilon cultivars it examined is formed by a group of nine compatible clones. A conilon field, in other words, is often a deliberate mix of genetically different plants chosen to pollinate one another.

Low altitude, with an experiment uphill

Conilon is a lowland coffee. The 2018 study cites canephora's adaptation to regions with low altitude and high temperatures, and the Espírito Santo newspaper A Gazeta describes conilon as "cultivado em baixas altitudes" (grown at low altitudes). None of the sources consulted gives a precise altitude limit.

Low altitude is the norm, not a law. In 2020, an A Gazeta column reported that researchers had begun trialing conilon genotypes in Ibitirama, in the Serra do Caparaó of Espírito Santo, on a farm starting at 800 m (about 2,600 ft) that had always grown arabica. The results were still pending at the time.

Hybrids, Rondônia and the naming habit

In everyday Brazilian usage, "conilon" often stretches to cover nearly all of the country's canephora. Perfect Daily Grind observes that much of the canephora produced in Brazil is simply referred to as conilon. Brazil's national crop agency, Conab, goes further: it describes Rondônia, in the western Amazon, as a state of "plantio exclusivo de conilon" (conilon-only planting).

The breeders tell a different story. Embrapa's "Amazonian Robustas", cultivars developed for that same region, are hybrids of the two groups, and the 2020 paper says that, thanks to their hybrid nature, they express "the best characteristics of the conilon and robusta botanical varieties". According to Marcelo Curitiba, an Embrapa researcher and co-author of that paper, interviewed by Cenarium in 2022, these hybrids are more vigorous than conilon but less tolerant of drought.

So the agency's statistical label and the botanist's description do not match, and neither is wrong on its own terms. When a Brazilian report says conilon, read it as "Brazilian canephora"; when a geneticist says conilon, read it as the kouilou group (SG1 in the genetic literature).

From veneno to geographical indication: conilon in Espírito Santo

Arrival in 1912

Conilon reached the Brazilian state of Espírito Santo in 1912. Revista Cultivar dates the introduction of the first seedlings and seeds to that year, and A Gazeta also says conilon has been present in the state since 1912. The date applies to Espírito Santo, not to Brazil as a whole.

A late commercial start and a bad name

Presence is not the same as an industry. Writing in December 2019, A Gazeta said conilon had only 47 years of commercial cultivation behind it, which places the start of commercial farming in the early 1970s. According to the same newspaper, 53 % of the state's coffee trees were eradicated to contain the height of a crisis in which prices had collapsed.

For decades, conilon also carried a poor reputation. A Gazeta reports that growers did not look after their plots well, so conilon earned the nickname veneno (poison). The headline of that same article tells the rest of the story: it calls Espírito Santo's conilon the best in the country.

Recognition in 2021

In May 2021, Revista Cultivar reported that conilon from Espírito Santo had received a geographical indication from INPI, Brazil's industrial property office, in the category known as Indicação de Procedência (indication of source). The magazine describes it as the first geographical indication of that type for conilon.

Brazil's conilon today

Second in the world

Brazil is the world's second-largest producer of canephora, a ranking confirmed by both Reuters and the 2018 Espírito Santo study. Reuters names Vietnam as the largest. Within Brazil, Espírito Santo produces the majority of the conilon. Conab calls it the country's leading conilon producer, and Reuters says the state grows the overwhelming majority of Brazil's canephora. Its exact share varies from year to year and from source to source, so we do not give a single percentage.

The 2026 harvest in numbers

Brazilian coffee is counted in bags of 60 kg (about 132 lb). In its third survey of the 2026 harvest, published in September 2026, Conab estimated, as relayed by Agência Gov:

• Brazil: 19.4 million bags of conilon, down 6.6 % on 2025;
• Espírito Santo: 12.1 million bags of conilon, down 14.3 %;
• Bahia: 3.3 million bags of conilon;
• Rondônia: 2.88 million bags, up 24 % on 2025.

Remember the naming habit above when you read the Rondônia figure: Conab counts it as conilon, though Embrapa has developed conilon and robusta hybrid cultivars for the region. Other agencies publish different figures for Brazilian canephora, under different labels and crop years, so compare like with like. Reuters also reported in 2026 that canephora output has grown significantly in states such as Mato Grosso and Minas Gerais, a sign that the crop is spreading beyond its traditional states.

Conilon in the cup and in the industry

Where conilon goes

Reuters describes robusta-type canephora as "a bolder variety used for espressos and instant coffee", and ABICS, the Brazilian soluble coffee industry association, notes that instant coffee is made from both arabica and robusta/conilon. Conilon, in other words, is a workhorse of espresso blends and soluble coffee, though not their only ingredient.

Is conilon stronger than robusta?

Is conilon the "strong" canephora, with more caffeine than its robusta cousins? One study says no. An Embrapa study published in 2024 in the Journal of the Brazilian Chemical Society compared roasted conilon, robusta and hybrid coffees from the western Amazon. It found "No difference in the contents of caffeine" between them. The samples ranged from 1,427 to 3,364 mg of caffeine per 100 g (about 3.5 oz) of roasted coffee, roughly 1.4 to 3.4 % of its weight. That is one study from one region, but it gives no support to the idea that conilon is the stronger of the two.

Where to go next

Conilon is a fine example of why coffee names deserve a second look: a misspelled river, a crop label that outgrew its botany, and a lowland plant that went from veneno to a protected origin. For the wider family of coffee plants and varieties, browse our coffee knowledge library. For the other side of the coffee family, an arabica variety with its own tangled history, read what Bourbon coffee really is. If you want to brew a canephora-rich blend at home, our guide on how to use a French press covers the ratio, grind and steps. And to see where the coffee plant itself first came from, follow the story back to Africa in where coffee originated.