Arabica grows at high altitude, tastes more complex, and contains less caffeine (1.2–1.5 %). Robusta grows at lower elevations, tastes bolder, and has roughly double the caffeine (2.2–2.7 %).

What Is the Difference Between Arabica and Robusta?

Arabica grows at high altitude, tastes more complex, and contains less caffeine (1.2–1.5 %). Robusta grows at lower elevations, tastes bolder, and has roughly double the caffeine (2.2–2.7 %).

Why that matters

Arabica (Coffea arabica) and Robusta (Coffea canephora) are the two commercially relevant coffee species. Arabica accounts for 60–65 % of global trade, Robusta for 35–40 %. The differences start at cultivation and carry through to the cup.

Arabica grows at elevations between 800 and 2,200 metres. The plant prefers moderate temperatures of 15–24 °C. Due to the slow ripening at altitude — 6 to 9 months — the beans develop more sugar and more complex flavours: fruity, floral, nutty, chocolatey. The downside: Arabica is susceptible to diseases like coffee leaf rust (Hemileia vastatrix) and demands more careful cultivation.

Robusta thrives at lower elevations in temperatures up to 30 °C. The plant is hardier — hence the name — more resistant to pests, and yields more per harvest. Flavour-wise, Robusta is bolder, often earthier and more bitter. In the cup, Robusta delivers more body and thicker crema, which is why traditional Italian espresso blends often include 10–30 % Robusta.

Robusta’s double caffeine content isn’t coincidental — it’s an evolutionary adaptation. Caffeine acts as a natural insect repellent. In the hot, pest-heavy lowland areas where Robusta grows, more caffeine means a survival advantage.

A common misconception: “Arabica = good, Robusta = bad.” In mass production, that often holds — cheap Robusta is used as filler. But carefully cultivated Specialty Robusta can taste excellent and is increasingly taken seriously in the industry.

At Green Wall Coffee

At our café on Sophienstraße 27 in Berlin-Lichtenberg, we work with 100 % Arabica. Not because Robusta is inherently inferior, but because the flavour profiles of our Arabica beans — fruity, complex, with pronounced acidity — align better with our philosophy. When guests ask why no Robusta, I explain the difference using two espressos side by side: an Ethiopian Arabica with blueberry notes next to an Indian Robusta with peanut-chocolate character. Both have their place — but in the specialty segment, Arabica leads.

Related Questions

• Is Arabica really better than Robusta?
• How many coffee species exist worldwide?
• What does “100 % Arabica” mean on the packaging?

More depth on this topic in the article How to Make Perfect Espresso. Or stop by at Sophienstraße 27 — Mon–Fri 8am–5pm, Sat 10am–5pm.