Sixty plants of Rock Melon are grown by using the fertigation technique in the autopot system were investigated. From 60 plants, there were divided into two type of cultivar that was Golden Champ and Glamour. All the plants were planted in the netted rain shelter. This research was to compare the growth performance between the varieties that is more suitable to use the autopot system. Data for the number of leaves, plant height, and leaf area, and leaf perimeter, diameter of the stem, number of pollination success and diameter of fruits according to number of fruits per plant was recorded. From the data taken, all the result showed there are no significant differences between types of cultivar that are suitable to the new system of fertigation that is autopot system. It was found that, the Golden Champ cultivar plant is showed a better performance in form of growth compare to the Glamour cultivar.