Coffee Tree Morphology and Global Distribution Explained

If you’ve ever wondered what a coffee tree actually looks like, how those red ‘cherries’ form, or why certain countries grow the best beans, this guide breaks it all down—from flower to fruit and farm to cup.

Coffee trees are small evergreen shrubs or trees native to Africa. They produce fragrant white flowers, followed by oval green berries that ripen to bright red—each holding two seeds, which we call coffee beans. The entire process, from flower to harvest-ready cherry, takes several months and depends heavily on climate and elevation.

What Does a Coffee Tree Look Like?

Coffee trees belong to the Rubiaceae family and typically grow as a shrub or small tree. Their leaves are glossy, dark green, leathery, and grow in opposite pairs along the branches. Each leaf is long and oval (lanceolate) in shape. One of the most striking features of the coffee tree is its flowers: small, white, tubular blooms with five petals, arranged in tight clusters. These blossoms emerge in spiral patterns and give off a sweet jasmine-like fragrance, typically around March. The flowers last just a couple of days before falling off, making way for fruit development a few months later.

The coffee fruit, known as the coffee cherry, is oval and berry-like. When unripe, it is green; it then turns yellow and finally deep red when ripe—similar in appearance to a cherry, hence the common nickname. Each mature cherry usually contains two seeds (coffee beans), though occasionally only one (called a peaberry). The outer fruit has a mildly sweet pulp, while the inner seeds are what are processed, roasted, and brewed as coffee.

What Are the Main Types of Coffee Species?

There are three primary commercially grown coffee species: Coffea arabica (Arabica), Coffea canephora (Robusta), and Coffea liberica (Liberica), with Arabica and Robusta being the most common. Arabica beans are further categorized into three size types: small, medium, and large. Small-bean varieties (like Typica and Bourbon) generally have lower caffeine content but more pronounced aroma, while medium and large beans (like Robusta) contain more caffeine but often have a harsher, less nuanced flavor. Most commercial coffee blends combine around 70% medium-bean varieties for caffeine strength and 30% small-bean types for aroma. Each species also has multiple natural variants or cultivars.

Coffee plants are relatively shade-tolerant and can withstand cool conditions, but they are sensitive to direct sunlight, drought, and disease. Ideal conditions include mild daytime temperatures (not extreme heat), limited sun exposure (less than two hours of direct sunlight per day), and cool nights around 10°C. Because of these requirements, successful coffee cultivation depends heavily on microclimates and shading strategies such as interplanting with taller trees to diffuse sunlight.

Where Is Coffee Grown Around the World?

Coffee thrives in tropical regions located roughly between the Tropic of Cancer and the Tropic of Capricorn, particularly in high-altitude areas with consistent rainfall and well-drained volcanic soils. This equatorial zone is commonly referred to as the “Coffee Belt” or “Coffee Zone.” The ideal altitude for Arabica cultivation ranges broadly but often falls between 800 and 2,000 meters above sea level, depending on latitude and variety.

Globally, coffee is cultivated in 76 countries. The largest producer and exporter is Brazil, renowned as the “Coffee Kingdom,” which accounted for the majority of the world’s 550,000-ton coffee production and 420,000-ton export volume during the 1983–1984 season. However, the birthplace of coffee is Ethiopia, specifically the Kafa region in the country’s southwest. Wild coffee forests still grow there, and the word “coffee” is derived from the Ethiopian province name “Kaffa.”

Coffee trees require very specific environmental conditions: daytime temperatures around 20°C, no more than two hours of direct sun, regular moisture (often supplemented by afternoon rain or fog), and cool nights around 10°C—too warm leads to fast cherry development and inferior beans, while frost can kill the plant. That’s why most high-quality Arabica is grown in mountainous regions within the Coffee Belt.

Frequently Asked Questions

What does a coffee tree look like?

A coffee tree is a small evergreen shrub or tree with dark green, glossy, oval leaves growing opposite each other. It produces clusters of small, white, five-petaled flowers with a jasmine-like scent. The fruit, called a coffee cherry, starts green, turns yellow, then ripens to a deep red, containing two seeds (coffee beans) inside.

How many coffee beans are in each coffee cherry?

Most coffee cherries contain two seeds, which we call coffee beans. However, about 5–10% of cherries contain just one rounded seed known as a peaberry. Both types are harvested and processed for coffee production.

What are the main coffee species?

The three main coffee species are Arabica, Robusta, and Liberica. Arabica is the most widely grown and prized for its flavor, while Robusta has higher caffeine content and stronger bitterness. Arabica is further divided into small, medium, and large bean types, with blends typically mixing 70% medium and 30% small beans for balance.

Where is coffee originally from?

Coffee originated in Ethiopia, specifically in the Kafa region in the country’s southwest. Wild coffee still grows in the Kafa Forest, and the term “coffee” is derived from the regional name “Kaffa.”

Where does coffee grow best?

Coffee grows best in tropical regions between the Tropic of Cancer and Tropic of Capricorn, especially at high altitudes (800–2,000m). These regions have mild temperatures, periodic rain or fog, and cool nights—conditions typically found in the so-called Coffee Belt.

What is a coffee cherry?

A coffee cherry is the fruit of the coffee tree. It is oval, initially green, then turns yellow and finally bright red when ripe. Each cherry usually holds two coffee beans surrounded by sweet pulp. The beans are extracted, processed, and roasted to make brewed coffee.

Recommended FrontStreet Coffee Beans for Coffee Tree Lovers

Explore the origins of coffee with FrontStreet’s Ethiopia Yirgacheffe, a bright and floral single origin that highlights the delicate qualities of small-bean Arabica. For a classic balanced cup, try their Brazil Queen Manor, a medium-roast blend highlighting medium-bean Arabica varieties. Finally, dive into Yirgacheffe’s vibrant side with Ethiopia Huakui, known for its juicy body and citrusy aromas. All three showcase the diversity of the coffee species and growing regions discussed in this guide. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.