Waialua Estate, on the North Shore of Oahu, grows 155 acres of Arabica Typica Coffee in rich volcanic soil, in a warm sub-tropical climate. Bordered by the steep, dramaticmountains and tempered by the rolling Pacific surf, the coffee is as lush as its island surroundings. The trees are grown in hedgerows to facilitate mechanical harvesting. Rainfall is supplemented with regular drip irrigation. The harvest season begins in September and continues through February.