The California citrus industry is a significant part of the state's agricultural economy, producing a variety of fruits such as oranges, lemons, and grapefruits. The warm climate and fertile soil in regions like the San Joaquin Valley and Southern California create ideal conditions for growing citrus crops. Citrus farming in California began in the 18th century and has since evolved into a major industry. The state is one of the largest producers of citrus fruits in the United States, contributing to both domestic consumption and international exports.