The present invention relates to a method for cultivating platycodon without transplanting platycodon but having rich hair roots and fine roots and having a high crude saponin content, To do so; The soil is received in a cultivating tool projected upward from the ground of the cultivation ground and the upper part of the cultivation tool containing the soil is covered with mulching vinyl so that the soil is not exposed, It is characterized by planting annual seedlings or sowing seeds and growing them for 2 to 3 years before harvesting.
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