Everything You Need to Know About Coffee Trees

Coffee lovers often sip their favorite brew without thinking about where it all begins: the coffee tree. But for anyone curious about the journey from plant to cup, understanding the coffee tree is essential. These plants aren’t just random shrubs—they’re carefully grown, harvested, and processed to deliver the beans we roast and brew.

Coffee trees are tropical evergreens native to Ethiopia. The fruit they produce—commonly called a coffee cherry—contains seeds we know as coffee beans. The right climate, tree variety, and careful processing all determine the quality of the coffee you drink.

What Is a Coffee Tree?

Botanically, the coffee tree belongs to the Rubiaceae family, specifically the Coffea genus. These are evergreen shrubs or small trees that can grow up to 10 meters tall in the wild, though cultivated trees are usually pruned to 2–4 meters for easier harvesting. What we call a “coffee bean” is actually the seed inside the coffee fruit, shaped like a bean.

The coffee tree produces white, jasmine-scented flowers that bloom for a few days before fading. Several months later, red coffee cherries appear, signaling that the beans inside are ready for harvest.

Where Do Coffee Trees Grow?

Coffee trees thrive only in tropical or subtropical climates, typically within the region known as the “Coffee Belt” between 25 degrees north and 25 degrees south of the equator. This zone offers the ideal combination of temperature, rainfall, and altitude for coffee cultivation.

The Coffee Tree Lifecycle

A coffee tree generally begins flowering around its third year. It takes roughly three to four years before it produces fruit, and reaches peak production between 7–20 years. After around 20–25 years, yields decline, although some trees can continue fruiting for over a century.

The tree’s leaves are glossy and grow opposite each other on short stems. Branches grow horizontally or downward. Two main commercial species dominate global production: Arabica and Robusta.

Coffee Species: Arabica vs. Robusta

There are three primary coffee species: Arabica, Robusta, and Liberica. Arabica (Coffea arabica) makes up about 70% of global production. Its leaves are around 15 cm long. Robusta (Coffea canephora), originating in the Congo, accounts for 20–30% of production and features broader, darker green leaves. Liberica is far less common and not a major commercial crop.

Arabica is widely considered superior in cup quality, with complex flavors and higher acidity. Robusta is hardier, has more caffeine, and is mostly used in espresso blends for crema and body.

How Coffee Cherries Become Beans

The coffee cherry is a small, round fruit about 1.5 cm in diameter. It starts green, turns yellow, then red when ripe—similar to a cherry. Each cherry usually contains two coffee beans, flat sides facing each other, surrounded by a thin layer called the silverskin, encased in a parchment-like husk (the endocarp), with a sweet, sticky pulp (the mesocarp) on the outside.

Harvesting ripe cherries is crucial. Each tree can take several minutes to a few hours to handpick properly, depending on the farm’s practices.

How Coffee Beans Are Processed

There are two main methods to remove the coffee bean from the cherry: the washed (or wet) process and the natural (or dry) process.

In the washed process, cherries are soaked in water tanks for 24–28 hours. Unripe cherries float and are removed. The remaining cherries go through a depulper to remove the skin and pulp. The beans are then fermented in water for 12–24 hours to break down any remaining mucilage, washed clean, and dried in the sun until their moisture content drops to around 11–12%. Finally, a machine removes the parchment layer.

In the natural process, cherries are spread out in the sun to dry completely, sometimes for weeks. Once dry, the outer fruit layers are mechanically removed to reveal the beans inside. This method is more dependent on stable weather and often results in earthier flavors, but can yield rich, full-bodied cups when done well.

The washed method generally produces cleaner, brighter flavors and allows for better sorting of unripe beans. The natural method, while simpler, carries a higher risk of defects and flavor inconsistencies.

How Coffee Roasting Affects Flavor

Roasting transforms green coffee beans into the aromatic, flavorful beans we use to brew. Originally, coffee was consumed by chewing the whole fruit or grinding the beans with fat for energy. By the 13th century, people boiled raw beans, but it wasn’t until the 13th century that roasting was discovered—unleashing the rich aromas and flavors we associate with coffee today.

Roast levels are generally categorized as light, medium, and dark. Light roasts preserve more origin characteristics and acidity. As roasting gets darker, acidity decreases and body and bitterness increase. The ideal roast level depends on the bean origin, brewing method, and personal taste.

Frequently Asked Questions

What is the coffee tree’s scientific name?

The coffee tree belongs to the genus Coffea, part of the Rubiaceae family. The two main species are Coffea arabica (Arabica) and Coffea canephora (Robusta).

Where are coffee trees originally from?

Coffee trees are native to the highlands of Ethiopia in Africa. That’s where the first coffee plants were discovered and cultivated.

How long does it take for a coffee tree to produce fruit?

A coffee tree typically starts flowering around year three and begins producing usable coffee cherries about three to four years after planting.

What are coffee cherries?

Coffee cherries are the fruit of the coffee tree. Each cherry usually contains two seeds (coffee beans) surrounded by sweet pulp and protective layers.

What’s the difference between washed and natural coffee processing?

Washed (wet) processing removes the coffee bean’s pulp using water and fermentation, resulting in cleaner flavors. Natural (dry) processing dries the whole cherry in the sun before removing the bean, often producing fruitier, earthier profiles.

How does roasting affect coffee flavor?

Roasting develops the coffee’s aroma and flavor. Light roasts highlight acidity and origin traits, while darker roasts bring out more bitterness, body, and caramelized notes.

Recommended FrontStreet Arabica Coffees for Coffee Tree Lovers

Explore classic Arabica varieties that highlight the diversity of the coffee tree’s potential. Try the Ethiopian Yirgacheffe from the Gedeb Cooperative for bright citrus and floral notes. For balance and elegance, the Jamaica Blue Mountain No.1 (Typica) offers chocolatey richness with a smooth profile. Or dive into fruity complexity with the Strawberry Candy Geisha blend, blending Panamanian and Costa Rican beans for layered aromatics. All are 100% Arabica, grown in prime coffee regions, and showcase what well-farmed coffee trees can produce. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.