How is Coffee Grown in Papua New Guinea? Papua New Guinea is a coffee-growing country located in the South Pacific. The coffee beans are grown in the Papua New Guinea Highlands, where the cool climate, high altitude, and bountiful rainfall create an ideal environment for growing coffee.  The coffee beans are grown on small farms, and the farmers use traditional methods to grow and harvest the beans. The beans are wet processed, which involves washing the beans in water to remove the pulp and mucilage and then the coffee beans are then dried in the sun.