Leucojum aestivum L. is one of the species that is allowed to be exported in natural flower bulbs with quota limitation from production. By the regulation, summer snowflakes with above 7.5 cm bulb circumference are allowed to be exported. Increasing the bulblet circumference of the bulblet obtained from propagation in a short period of time is important for the protection of natural spreading summer snowflakes. This experiment was conducted to determine the effects of different sucrose ratios on bulblet formation and development. Summer snowflakes bulbs with 8.5 cm length were cleaned and divided longitudinally into four parts. The segments were placed in black polyethylene bags filled with 3 liters of perlite and then 2 more liters of perlite was added to the bag. Each bag maintained with 10 segments. The bags were irrigated with tap water (control), 1% sucrose containing and 2% sucrose containing water, respectively, and they were incubated for 12 weeks. After incubation; the effect of different sucrose ratios on the rate of bulblet formation, bulblet length, bulblet diameter, bulblet weight, bulblet number, root number and root diameter were found insignificant. However, the effect on root length was found to be significant with 95% confidence. The bulblet weight varied from 1.07 g to 1.23 g and the bulblet diameter ranged from 8.67 mm to 9.37 mm. The highest root length (30.39 mm) was found in 1% sucrose treatment.