The objective of this study is to identify the constraints faced by medicinal plant growers in adoption of recommended cultivation practices. The present investigation was conducted in Tiruvannamalai district of Tamil Nadu state. A total of 120 respondents were selected randomly by proportionate random sampling method and  ere interviewed personally with the help of a structured interview schedule. The collected data were processed and statistically analyzed. Major constraints experienced by the medicinal plant growers were improper availability of seed/planting material, high cost of labour, lack of fixed price policy for medicinal plants by the government and lack of processing industries.