ABSTRACT This study aims to determine the best chlorox sterilization in the cultivation of Dendrobium sp. orchids in vitro. lorox with a concentration of 3% and 5% is the best concentration for the growth of Dendrobium sp. orchid plantlets with a survival rate of 50%.Dendrobium sp orchid subculture should use chlorox with a concentration of 3%, this aims to prevent damage to plant tissue, in a…