Coffee berry, noun: Fruit of the evergreen coffee plant (can grow up to 60 feet high, pruned down to a maximum of 10 feet). They ripen on our Arabicas up to ten months; only the ripe, red berries are harvested. When they are unripe, they are green to yellow and hardly have any flavor. Overripe, black coffee berries, or rather their beans, taste foul. Each coffee bean makes up one side of the seed of the coffee berry. An estimate of 15 billion coffee trees grow on all coffee plantations throughout the world.