Current study was carried out in the Department of Horticulture and Forestry, Directorate General for Agriculture in Najaf province, during 2021 spring season to determine the response of growth and yield of (Capsicum annuum L.) to the spraying with nano-amino acids and potassium silicate. 12 treatments including four concentrations of nano-amino acids as a foliar feed (0.0, 0.5, 1.0 and 1.5ml.L-1 ) and three concentrations of potassium silicate (0, 2 and 4ml.L-1 ) were applied by spraying these concentrations of the vegetative growth of sweet pepper cv. California Wonder