A method for cultivating a fruit vegetable includes, a step that causes a flower bud differentiation by separately and independently carrying out a procedure to irradiate red light on a fruit vegetable sprout, and a procedure to irradiate blue light on the fruit vegetable sprout, and a step that irradiates light by a fluorescent lamp, or irradiates a sunbeam, or simultaneously irradiates red light and blue light on the flower bud differentiated fruit vegetable.
