Calamansi (Citrus × microcarpa), also known as Calamondin, is a citrus hybrid native to China, cultivated predominantly in the Philippines. The fruits are used to flavor foods in Southeast Asian cuisine or to make a "Filipino lemonade". The tree is perfect to grow in a container.
 
Taste: The flesh is tart, pleasantly sour and acidic, the flavor is aromatic with a bright, floral scent. The peel is also edible, it contains a tangy, slightly sweeter taste than the flesh.
Tree size: 6 - 8 ft tall
Fruit size: Small (1 - 2 inches in diameter)
Season: Year-round, with a peak season in the winter through spring.
Zones: 8 - 11