This article examines the collapse of the citrus industry in València, Spain during the last years of World War I. In it, I argue that the strikes represent a key moment in the proletarianization of the region's agricultural working classes. By 1914, citrus had become one of Spain's most profitable exports, and prior to the 1917 crash, the landed and monied interests in control of the industry had enforced the notion of inter-class cooperation, which broke down under the economic stress of the War. In the wake of the collapse and the strikes that followed, workers began to organize in earnest and began to work towards improving working conditions and establishing fairer work contracts.