While working in business he began writing, first short stories, then in 1933 a novel based on his war experiences, "Company K". His follow-up work was the "Pearl County" series, novels and short fiction set in his native south Alabama, the most successful of which is the novel "The Looking-Glass". However, literary success eluded him. His last novel, "The Bad Seed", was published in 1954, the year March died. It became a bestseller, but he never saw his story adapted first for the stage in 1954, and then for film in 1956, 1985, and 2018. March was one of twelve inaugural inductees to the Alabama Writers Hall of Fame on June 8, 2015.