This study aims to determine the effect of the microalga Chlorella vulgaris as a biostimulant on the growth of Pakcoy (Brassica rapa L). The research was conducted using a Completely Randomized Design (CRD) with seven treatments and four replications. The Chlorella vulgaris biostimulant used came from Intact Cells (IC) and Dry Intact Cells (DIC) at different concentrations: P0 (Control/without …