Frederick R. M. Undritz graduated in the class of 1921 from Cornell University with a Bachelors of Science in Agriculture. While at Cornell he shortened his name from Frederick Reinhold Martin Undritz to Frederick Reinhold Undritz.

Frederick R. M. Underitz was a cut flower grower in West New Brighton, Long Island, New York. From: Standardized Plant Names.

He lived along with Reinhold Undritz at 188 Greenleaf Ave. in West New Brighton. From: ARS Members handbook for 1922. Reinhold, his father, must have operated the cut flower business.