Lemon harvesting in California is unique compared to many other citrus crops because established trees can produce fruit and flowers simultaneously throughout the year, allowing for multiple harvest windows. However, the primary commercial harvest seasons generally peak during the winter and spring months, spanning from January through May, depending on the specific growing district and varietal type (such as the popular Eureka or Lisbon lemons). Coastal orchards in Southern California often experience extended or year-round bearing cycles due to mild maritime microclimates, ensuring a steady stream of fresh fruit for markets.