The ornamental nursery owners are small- or large-scale entrepreneurs who raise and market their ornamental plant commodities. The ornamental nursery is an enterprise undertaken by a nursery owner to gain self-employment and earn some profit. The present study was conducted using an ex-post facto research design in four talukas of the Navsari district of South Gujarat namely Khergam, Chikhli, Gandevi and Vansda during the year 2022-23. From each selected taluka 25 respondents were randomly selected. Thus, for the present study total of 100 sample size was obtained. The study was conducted to find out the entrepreneurial behaviour and motivational sources for the ntrepreneurial behaviour of ornamental nursery owners of the study area. The entrepreneurial behaviour of ornamental nursery owners was assessed from risk orientation, achievement motivation, scientific orientation, management orientation, innovativeness and decision-making ability. The study revealed that the majority of ornamental nurseries had a medium level of entrepreneurial behaviour. The study also revealed that the majority of ornamental nursery owners had a medium level of risk orientation, achievement motivation, scientific orientation, management orientation, innovativeness and decision-making ability. Additionally, the study revealed that among the six components of entrepreneurial behaviour management orientation contributed the highest in calculating entrepreneurial behaviour, followed by scientific orientation, risk orientation, achievement motivation, decision-making ability and innovativeness based on their mean percentage ranking. The study further revealed that less than half of the ornamental nursery owners had progressive nursery owners, followed by self and neighbours/friends/relatives as their motivational sources for entrepreneurial behaviour.