The research aimed to study the effect of size of container on the growth of seedlings pepper "Snapper". Two different sizes of plastic containers, with dimensions 8×8 cm and12×12 cm were used, Results showed that the use of containers with large dimensions had increased the growth of seedlings compared with the use of smaller ones. A significant increase, of about 14% was observed in the average length of seedlings and about 16% in the average number of leaves produced in the large containers as compared with seedlings produced in smaller ones. Also the fresh wet weight, whether for the plant or its separate parts was significantly higher in seedlings produced in the large containers. The plant fresh wet weight in the large container was 26.98 g vs., 2.27 g in the smaller ones.