PROBLEM TO BE SOLVED: To provide a culture soil made from paper, having a light weight and hardly causing staining; and to provide a method for producing the culture soil. SOLUTION: The culture soil is obtained by moisturizing a tape obtained by cutting a web, sufficiently twisting the moisturized tape by subjecting the moisturized tape to a paper-twisting mechanism to form a fine string shape, and cutting the fine string-shaped material short to provide a granular material. COPYRIGHT: (C)2005,JPO&NCIPI