The study was conducted in Karnataka regarding constraints and suggestions of protected cultivation among horticulture crop growers in the agricultural year 2019-20. With respect to practice wise production performance, cent per cent of the capsicum growers have fully adopted soil testing practice, irrigation, drainage and supporting system. More than three-fourth of the growers and more than half of the capsicum growers fully adopted pinching and recommended spacing /specification of bed respectively. About economic performance of capsicum growers the average operating cost of cultivation was Rs. 3, 85, 000, gross returns were Rs. 10, 80, 000, net returns were Rs. 6, 95, 000 and B:C ratio was 2.80 were found.  The realized crop yield of capsicum under protected cultivation was 36000 kg/ac, which is 47.22 per cent higher than the open field yield (19500 kg/ac). With respect to social performance of the capsicum growers, more than four-fifth of the growers were consulted by the others for information and guidance for cultivation of crops under protected cultivation, eighty per cent of the growers purchasing capacity was increased, two-third of them were recognized by villagers/neighbours because of performance in farming.