How Coffee Grows: From Tree to Harvested Cherry

Ever wondered how the coffee in your cup began its life? Before it’s roasted, ground, or brewed, every coffee bean starts as a fruit on a tree—specifically, a bright red ‘cherry’ that grows on a tropical evergreen. But what does that tree look like, how long does it take to bear fruit, and what turns those green berries red? This is the full story of how coffee grows, from flowering to harvest.

Coffee trees typically take 4–5 years to mature and flower, grow up to 10 metres tall (but are pruned to under 2 metres for easier picking), and produce cherries that take 6–7 months to ripen from green to red. Each mature cherry usually holds two coffee beans, though a rare single-seed variant called a peaberry can also form.

What Is a Coffee Tree?

A coffee tree is a tropical evergreen that can reach between 5 to 10 metres in height under natural conditions. However, to make harvesting easier, farmers usually prune them to stay below 2 metres tall. The tree produces white, fragrant flowers before developing green, oval-shaped fruits. These fruits gradually ripen from deep green to a bright red—similar in colour to cherries—which is why they’re commonly called ‘coffee cherries.’ Inside each cherry are typically two coffee beans.

The Coffee Flowering Stage

Coffee trees begin to flower when they reach around 4–5 years of age, usually blooming between February and March. The coffee flower is small, white, with five petals that curve backward, giving off a strong, sweet fragrance reminiscent of jasmine. The flowers appear in tight clusters along the branches and bloom for just 3–5 days—making the sight of a full coffee blossom display a rare and fleeting moment. After pollination, these flowers develop into the green coffee fruits that will eventually ripen into cherries.

From Green Fruit to Red Cherry

Once the flowers fade, green coffee fruits begin to form. These start off small and hard, remaining green for several months. Over the course of 6–7 months, the fruits mature and their colour changes from deep green to a vivid red. This red, cherry-like exterior is what gives the fruit its common nickname. Beneath the skin is a layer of sweet, sticky mucilage, followed by a protective parchment layer (the endocarp), which encases the two coffee beans. Each bean is coated with a very thin membrane known as the silver skin. Most cherries contain two flat-sided beans facing each other, but occasionally, a cherry will produce just one round bean instead.

What Is a Peaberry?

About 5% of coffee cherries develop a mutation where only one round bean forms inside, instead of the usual two flat beans. This single, rounded bean is called a peaberry (or sometimes ‘caracol’). Unlike regular beans, peaberries lack a flat side and are smaller and more spherical. Because they occur infrequently and must be hand-sorted, peaberries are rarer and often considered to have a more concentrated flavour. Many coffee enthusiasts believe peaberries deliver a richer, more intense cup profile, making them highly sought after despite their small numbers.

Coffee Cherry Anatomy: What’s Inside?

Each mature coffee cherry typically houses two coffee beans. These beans sit facing each other with a flat side, enclosed within a sweet, sticky layer of mucilage. Beneath that lies the parchment layer—a tough, protective, beige-coloured husk that shields the beans. Surrounding each individual bean is an extremely thin skin called the silver skin. The entire structure is encased within the cherry’s red outer skin. Understanding this anatomy is crucial for processing methods like washed, natural, and honey, which determine how much of this fruit material remains in contact with the beans before drying.

How Long Does It Take for a Coffee Tree to Bear Fruit?

A coffee tree generally takes 4 to 5 years after planting to mature and begin flowering. Once it flowers, successful pollination leads to the formation of coffee cherries, which then take approximately 6 to 7 months to ripen from green to red. This means a coffee tree may take nearly half a decade before producing its first harvestable crop.

Why Are Coffee Cherries Red?

Coffee cherries turn red as they ripen, changing from their initial deep green colour. This red hue signals that the fruit is mature and the coffee beans inside are ready for harvest. The red colour, combined with the cherry-like shape, is why the fruit is commonly referred to as a ‘coffee cherry.’ The colour change is a key indicator for farmers deciding the right time to pick the cherries for optimal flavour in the beans.

Frequently Asked Questions

How tall do coffee trees grow?

Coffee trees can naturally grow up to 5 to 10 metres tall, but are usually pruned to stay under 2 metres to make harvesting easier.

When do coffee trees flower?

Coffee trees typically flower when they are 4–5 years old, with the flowering season occurring between February and March. The flowers bloom for only 3–5 days.

What colour are ripe coffee cherries?

Ripe coffee cherries are bright red, similar in colour to cherries, which is why they are commonly called ‘coffee cherries.’

How many coffee beans are in a cherry?

Most coffee cherries contain two coffee beans that face each other with flat sides. However, about 5% of cherries contain just one round bean, known as a peaberry.

What is a peaberry coffee bean?

A peaberry is a rare, single round coffee bean that forms inside a cherry instead of the usual two flat beans. They are often separated during sorting and are considered to have a more concentrated flavour.

How long does it take for coffee cherries to ripen?

It takes approximately 6 to 7 months for coffee cherries to ripen from green to their final red colour after the flowers have been pollinated.

Recommended FrontStreet Beans for Coffee Lovers

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