The Mandarin is a small tree that grows up to 20 feet in height. It bears small orange like fruits and fragrant flowers. The tree grows throughout the year and has small glossy leaves. The tree is native to china and is brought to Europe and USA in 19th century where it is known as Tangerine. Mandarin essential oil is extracted from the outer peel of the fruit using cold pressed extraction method. The oil is widely used in aromatherapy.