Nigella turcica Dönmez & Mutlu (Ranunculaceae) is a narrow endemic species and closest relative is N. sativa (black cumin) has an economic importance. In this study, optimum conditions of seed germination was searched for N. turcica. Germination did not occur during 45 days either 4 or 16°C. Potassium nitrate and giberellic asid (GA3) with 10 and 25 ppm concentrations were ineffective in embro growth. Optimal conditions to seed germination of N. turcica have been determined as 100 ppm concentrations of giberellic asid at 16°C.