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This study aims to determine the effect of biogas waste on the growth of coffee plant seeds. The biogas waste used is from cows that get feed from red picking coffee waste. The research was conducted from July to December 2013 in Banaran Village, Kec. Ambarawa Kab. Semarang. This research was carried out by experimental experiment method using RAK (Randomized Group Design) 1 factor, which is giving biogas waste at 3 given levels at 14 days intervals. The treatment tried was P1 = 250 ml biogas waste / plant, P2 = 500 ml biogas waste / plant, and P3 = 750 ml / plant biogas waste, and P4 = PTPN fertilizer control. The parameters observed were plant height, number of shoots, number of leaves, and leaf area. The data obtained were analyzed using Analysis of Variety Anova. if there is a difference followed by the Smallest Significant Difference (LSD) test. The results showed that the best treatment was the administration of 250 ml of biogas / plant waste.