How Coffee Trees Grow: From Flower to Coffee Bean

If you’ve ever wondered how the coffee in your cup began its life, the answer starts high in the branches of a tropical evergreen. But what does a coffee tree actually look like? How tall does it grow? What turns its fruit red? And what exactly is inside that shiny red 'cherry'? Here’s the complete breakdown of how coffee trees grow, flower, and produce the beans we roast.

In short: A mature coffee tree grows 5–10 metres tall but is usually pruned to under 2 metres for easier harvesting. It flowers after 4–5 years, with blooms lasting just 3–5 days. The resulting green coffee cherries take 6–7 months to ripen to a bright red, each typically holding two coffee beans—but sometimes just one round ‘peaberry’.

What Is a Coffee Tree?

A coffee tree (Coffea) is a tropical evergreen shrub or small tree that produces the seeds we know as coffee beans. Under ideal conditions, it can reach heights of 5 to 10 metres. However, most coffee farmers prune their trees to stay under 2 metres tall. This makes harvesting the coffee cherries easier and encourages healthier, more consistent yields.

Coffee Flowers: Short-Lived and Fragrant

After a coffee tree reaches around 4 to 5 years of age, it begins to flower. Flowering typically occurs between February and March. The coffee flower is small, white, and has five petals that curl backward. Each flower gives off a strong, sweet fragrance similar to jasmine. The blossoms appear in tight clusters along the branches. Despite their beauty, the flowers last only 3 to 5 days—making the sight of a blooming coffee plantation a rare and fleeting experience. After pollination, these flowers develop into green coffee cherries.

From Green Cherry to Ripe Red: The Coffee Fruit Journey

Once the flowers fade, green, oval-shaped coffee cherries begin to form. These immature fruits are hard and have a bitter taste. Over the next 6 to 7 months, the cherries gradually ripen. When fully mature, the cherries turn a bright, cherry-like red—this striking color change is why many people call them ‘coffee cherries’ or simply ‘cherries.’

Inside each red cherry is a layer of sweet, sticky mucilage covering two seeds (the actual coffee beans). These beans sit facing each other on a flat side, encased within a thin, protective skin called the silver skin. Surrounding that is a tough, pale husk known as the parchment, which shields the bean from damage. In most cherries, you’ll find two beans. But occasionally, you’ll get just one round bean instead of two flat ones—that’s a peaberry, and it’s special.

Peaberry Coffee Beans: Rare and Potentially More Intense

Some coffee cherries develop a mutation where only one rounded seed forms inside, instead of the usual two flat beans. This single, round bean is called a peaberry—or sometimes a caracol. Smaller and more spherical than regular beans, peaberries occur in very small quantities and must be hand-sorted. Because of their unique shape, some coffee experts believe peaberries roast more evenly and can produce a more concentrated, intense flavor. While not always better, peaberries are often considered a premium product and command higher prices.

Frequently Asked Questions

How tall does a coffee tree grow?

A mature coffee tree can grow up to 5 to 10 metres tall. However, most commercial coffee farms prune their trees to stay under 2 metres to make harvesting easier and improve yield consistency.

When do coffee trees flower?

Coffee trees typically begin flowering when they are around 4 to 5 years old. Flowering occurs mainly between February and March, and the white, jasmine-scented blossoms last only 3 to 5 days.

What color are ripe coffee cherries?

Ripe coffee cherries turn a bright red color, similar to cherries, after about 6 to 7 months of maturation following the flowering stage. This red exterior is why they are commonly referred to as ‘coffee cherries.’

How many coffee beans are in a cherry?

Each ripe coffee cherry normally contains two coffee beans that sit flat against each other. However, in rare cases, a cherry may contain just one round bean, known as a peaberry, which happens due to a natural mutation.

What is a peaberry coffee bean?

A peaberry is a single, rounded coffee bean that forms inside a coffee cherry instead of the usual two flat beans. They occur in small quantities, are often hand-selected, and are thought by some to have a more intense flavor due to their shape.

How long do coffee flowers last?

Coffee flowers have an extremely short lifespan, typically blooming for only 3 to 5 days. Their brief appearance makes the sight of a flowering coffee tree a fleeting but beautiful event.

FrontStreet Coffee Beans That Start with the Cherry

Explore the origins of your coffee with FrontStreet’s single origins that highlight the journey from cherry to cup. Try the Ethiopia Huakui for vibrant floral and citrus notes from Yirgacheffe, or the Panama Huacai with its complex stone fruit and chocolate profile. For something earthy and balanced, the Colombia Gesha showcases red berry and caramel tones. All are available as fresh-roasted green beans. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.