Influenced by various factors information of herbage yield is essential for determination of grazing capacity. The main objective of this research was investigation on effects of phenological stages (six diffrent cutting time) on values of forage quality indices of Sanguisorba minor Cv. Altınova, Bunyan and Gozlu used as materials. The samples were collected from Forage Crops Experimental Gardens of the Ankara University, Turkey. They were dried, grained and analyzed against various parameters. The results that showed that green grass yield indices values including fodder yield, crude protein (CP), Crude Cellulose, were significantly (P<0.01) different cultivars and six different cutting time. CP decreased for all cultivars, whereas, crude cellulose increased with plant growth development. Considering forage quality indices values among three cultivars, cv. Altınova had highest forage quality. In terms of growth stage, vegetative growth stage had better forage quality