He published twenty-six volumes of "Nihon Teienshi Zukan" (Illustrated guide to the history of Japanese gardens) in 1939, and built the foundation of his research on the history of gardens, and completed the thirty-three volumes (two extra volumes) of "Nihon Teienshi Taikei" (A historical overview of Japanese Gardens) along with his son, Kanto SHIGEMORI in 1976, and made huge achievements as a researcher into the history of gardens.
昭和14年(1939年)『日本庭園史図鑑』26巻を上梓して庭園史研究の基礎を築き、また昭和51年(1976年)には息子の重森完途と共に『日本庭園史大系』全33巻(別巻2巻)を完成させるなど庭園史研究家としても多大な功績を残した。