India is a veritable emporium of essential oil bearing plants. It is one of the few countries in the world where aromatic plants of all types can be cultivated in one or the other areas of the country because of the vast areas and the climatic conditions varying from the torrid to frigid zones, embracing various tracts of tropical and temperate plains, hills, valleys, irrigated soils, moist and dry climates. The important aspects of essential oil is aromatherapy which holds a significant area in the world of alternative medicines. ‘Aromatherapy’ is based on treatment with essential oils and is suited to the treatment of diseases of brain and nervous disorders.