Horace Hagedorn (March 18, 1915 – January 2005) was a businessman and philanthropist, and initial passive investor along with others, in Miracle-Gro, founded by Otto Stern (eventually bought out 50% interest of Stern). He is largely credited with the success of the company due to his effective marketing schemes. In later life, he donated large amounts to various charities, particularly those dealing with children. The School of Business at Adelphi University and the School of Education at Hofstra University are both named after him.