In 1935, after the death of his wife, Jensen moved from Highland Park, Illinois to Ellison Bay, Wisconsin where he established The Clearing Folk School, which he called a "school of the soil" to train future landscape architects.
V roce 1935, po smrti jeho manželky, se Jensen odstěhoval z Highland Park v Illinois na Ellison Bay ve Wisconsinu, kde založil The Clearing, kterou nazýval školu půdy, kde školil budoucí zahradní architekty.