The Key lime tree (Citrus aurantiifolia) is a small, tropical tree known for its fragrant flowers and small, round fruit. Native to the Florida Keys, it thrives in warm, humid climates and can grow up to 13 feet tall. The tree produces small, yellowish-green limes that are prized for their tart flavor, often used in desserts and beverages. Key lime trees prefer well-drained soil and full sunlight. They are sensitive to cold temperatures and require regular watering, especially during dry spells. These trees can be grown in gardens or containers, making them popular among home gardeners and chefs alike.