<;P>;PROBLEM TO BE SOLVED: To provide a cultivation method for efficiently harvesting roots of garlic. <;P>;SOLUTION: A hydroponic cultivation method for garlic includes supplying oxygen to a culture solution under irradiation of light, leaving a prescribed space between the lower end of scale or bulge, and a water surface. In this case, a space between the lower end of scale or bulge, and a water surface is 4-10 cm, or garlic scale or bulge is covered with a film. <;P>;COPYRIGHT: (C)2010,JPO&INPIT