An objective of the present invention is to provide a stevia plant having a high content of rebaudioside C. The present invention provides a high rebaudioside C-content type, non-genetically modified stevia plant that has a higher content of rebaudioside C than wild-type stevia varieties, more specifically at least 20% higher content. The present invention further provides: a method for producing such a high rebaudioside C-content type, non-genetically modified stevia plant; and dried leaves obtained from such a plant.