Coffee plants need a hot, humid climate and a constant temperature ( 15 – 25 C ). The Arabica variety grows between 900 and 2,000 meters, while Robusta grows under 500 meters. The berries become red and yellow when ripe, and are harvested by hand using the methods of picking, one by one of only the ripe berries, or stripping of all the berries, all at once, at a schedule average ripeness time. Coffee beans are then obtained from the berries through the process of dry, after about 4 weeks of drying the pulp is separated from the bean, and wet, the pulp is separated from the bean after 12-24 hours from harvest. Although it’s more expensive, the wet treatment is more effective in preserving the qualities of coffee.