Eight coo-season and three warm-season exotic grass species were raised and evaluated for above ground dry matter biomass in Mastung and Tomagh areas in upland Balochistan. Tall wheatgrass and pubescent wheatgrass exhibited high dry matter biomass in southern upland region (Mastung) both in fall, 1989 and spring 1990. In north-eastern region (Tomagh), weeping lovegrass outperformed in dry matter biomass production, however, some other species such as tall wheatgrass, pubescent wheatgrass, thickspike wheatgrass, orchardgrass and steppe wildrye also exhibited encouraging results. Mixture of Cool-season and warm-season grasses proved highly successful and showed promise to extend forage availability year round in upland Balochistan where winter forage deficit is a serious problem for livestock.