Medicinal and aromatic plants in many forms have been used since the ancient times in the traditional medicinal practices for health care. South Asia is home to many rich, traditional systems of medicine (TSM). Ayurvedic system dates back to 5000 B.C. Along with the Unani, Siddha and Tibetan systems, these TSMs remain important source of everyday health and livelihood for tens of millions of people.. According to WHO report, Medicinal plants are accessible, affordable and culturally appropriate sources of primary health care for more than 80% of the world population relies on traditional medicine largely plant based for their primary healthcare needs. According to WHO, the international market of herbal products is estimated to be US $ 62 billion which is poised to grow to US $ 5 trillion by the year 2050? With increasing popular demand for medicinal plants, both in Asia and internationally, this trade is expected to grow to 5 trillion by the year 2050. Aromatic plants and their products particularly essential oils are becoming more important. Traditional medicine is, at the present time accepted as an alternative for or used in conjunction with the western medical practice in many countries.