The addition of cytokinin to the multiplication of white turmeric ( Curcuma zedoaria ) seedlings in vitro proved effective in shoot multiplication, but the addition of high cytokinin concentrations could cause stunted shoots and stunted growth. The addition of the hormone gibberellins (GA 3 ) is often used in tissue culture for shoot elongation, so increasing the viability of plantlets. The experiment aims to determine the effect of GA 3 and obtain the best concentrations of GA 3 consisting of 0.50, 1, and 1.5 ppm GA 3 on optimizing the growth of zedoary plantlets. The experimental parameters included the number of shoots, roots, leaves, plantlet height, and chlorophyll content observed at 6 WAP after subculturing. The results showed that giving 1 ppm GA 3 had the best effect on optimizing plantlets' growth, namely the growth component of the number of shoots and plantlets' height.