What Are the 5 Main Types of Coffee Trees?

Ever wondered why your espresso tastes bitter while your pour-over bursts with citrus and floral notes? The difference starts at the root — or more precisely, the tree. There are only five major species of coffee plants that produce the beans we roast, grind, and brew. But two of them rule the market, and their biology explains everything from price to flavor.

In short: Arabica makes up over 70% of the world’s coffee, grown mostly at high altitudes and prized for its complex flavors. Robusta accounts for around 30%, is much hardier, has twice to three times the caffeine, but tastes more bitter and is used mostly in instant coffee.

The Five Coffee Tree Species

Coffee trees fall into five broad types: Arabica, Robusta, Liberica, Excelsa, and a few others of minor commercial importance. Of these, Arabica and Robusta are by far the most cultivated and consumed globally. The others — such as Liberica and Excelsa — appear occasionally in niche markets or traditional blends, but they make up less than 1% of global production combined.

Arabica: The Global Favorite

Arabica (Coffea arabica) accounts for more than 70% of the world’s coffee supply. These trees thrive at elevations above 900 meters, particularly in tropical regions across Central and South America, East Africa, Southeast Asia, Hawaii, and parts of the Arabian Peninsula. Arabica plants are sensitive: they demand stable temperatures, consistent humidity, and careful farming. That sensitivity, along with their nuanced flavors, is why Arabica beans command higher prices.

Arabica beans are celebrated for their wide range of flavors — from bright acidity and floral aromas to deep chocolate and fruit notes. This diversity is largely influenced by terroir: the combination of soil, altitude, climate, and processing methods unique to each growing region.

Robusta: The Hardier Sibling

Making up roughly 30% of global production, Robusta (Coffea canephora) is a tougher, more resilient species. It grows well at lower altitudes, typically between 200 and 600 meters, and is far easier to cultivate. Robusta plants require minimal care, tolerate a wider range of conditions, and are more resistant to pests and disease — but there’s a trade-off.

Robusta beans contain 2 to 3 times more caffeine than Arabica. While that extra caffeine acts as a natural pesticide, it also contributes to a harsher, more bitter taste with earthy, rubbery, or woody notes. Most Robusta is used in instant coffee and lower-cost commercial blends, although some roasters use it to add body and crema to espresso.

Minor Species: Liberica, Excelsa, and Beyond

Beyond Arabica and Robusta, there are other coffee species that play tiny roles in the global market. Liberica (Coffea liberica) has a distinctive smoky, woody flavor and once filled supply gaps when Arabica crops failed in the late 19th century, but today it’s rare. Excelsa (now often classified under Liberica) offers tart, fruity profiles and appears in some Southeast Asian blends. Other minor species exist but are grown in negligible quantities for specialty or research purposes.

Why Elevation and Care Matter

Arabica’s preference for high altitudes isn’t arbitrary. Cooler temperatures slow the coffee cherry’s maturation, allowing more complex sugars and acids to develop. That’s why high-grown Arabica often tastes more vibrant and layered. Robusta, on the other hand, thrives in hotter, lowland climates where Arabica would struggle — but those same conditions yield fewer nuanced flavors.

Labor intensity also separates the two. Arabica plants need regular pruning, shade management, and careful harvesting of only ripe cherries. Robusta is more forgiving — it grows in full sun, requires fewer inputs, and fruits more abundantly, which keeps costs and prices low.

Frequently Asked Questions

Which type of coffee tree produces the most coffee worldwide?

Robusta makes up about 30% of the world’s coffee production, but Arabica accounts for over 70%, making it the dominant species by a large margin. Most specialty coffee is Arabica, while Robusta is typically used in instant and commercial blends.

Why is Arabica more expensive than Robusta?

Arabica requires cultivation at high altitudes, meticulous farming practices, and careful harvesting of ripe cherries. It’s also more vulnerable to pests and weather, leading to lower yields and higher labor costs. Robusta is hardier, grows at lower altitudes, and needs minimal care, which makes it cheaper to produce.

Does Robusta have more caffeine than Arabica?

Yes. Robusta beans contain 2 to 3 times more caffeine than Arabica beans. That higher caffeine content acts as a natural pest deterrent but also contributes to Robusta’s harsher, more bitter taste profile.

Are Liberica and Excelsa commonly found in coffee shops?

No. Liberica and Excelsa make up less than 1% of global coffee production combined. They are extremely rare in commercial or specialty coffee shops, though Liberica has historical significance and Excelsa may appear in some traditional Southeast Asian blends.

What altitude is best for growing Arabica coffee?

Arabica coffee grows best at elevations above 900 meters (about 3,000 feet), with many premium coffees coming from farms at 1,200 to 2,000 meters or higher. Higher altitudes slow cherry development, enhancing sugar and acid profiles.

Is all specialty coffee made from Arabica?

Almost all specialty coffee is Arabica, as the species offers the complex flavors and qualities sought in single-origin and high-scoring beans. Specialty-grade Robusta does exist but is extremely rare.

Recommended FrontStreet Arabica Coffees

For a true taste of what makes Arabica special, try FrontStreet’s Ethiopia Yirgacheffe Gedeb — a vibrant washed coffee with citrus and jasmine, or their Jamaica Blue Mountain No.1 Typica, known for its balanced chocolate and almond notes. For something more exotic, the Strawberry Candy Geisha blend delivers floral and stone fruit complexity. All are classic examples of high-quality Arabica. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.