The two most common types of coffee beans used in making coffee are the Arabic bean and the Robusta bean. These two beans are used more than any other variety of beans, either in their pure form or in coffee blends. The Coffea Arabica bush is grown all around the world and is the bean that over seventy percent of all coffee beverages are made from.
Contrariwise, Arabica coffee beans are fragile and must grow in cool, subtropical climates. Arabica beans also need a lot of moisture, rich soil, shade and sun. Because of their fragility, Arabica beans are vulnerable to attack from various pests and can be damaged by cold temperatures or poor handling.
Robusta coffee. Robusta coffee is coffee made from the Coffea canephora plant, a sturdy species of coffee bean with low acidity and high bitterness. C. canephora beans (widely known by the synonym Coffea robusta) are used primarily in instant coffee, espresso, and as a filler in ground coffee blends.