Edith C. Blum was the daughter of a French father and an American mother. As a painter of the French-American school, Blum lived and worked both in France and the United States. She studied at the Art Students League of New York, The National Academy in New York, The Julienne Academy in Paris and with Constance Curtis at the Rembrandt Studios. She began to exhibit her work regularly in the 1930's and she was included in the annual exhibitions of the National Association of Women Painters in 1935, 1936 and the 1938, the National Academy in 1936, and the Corcoran Biennial in Washington D.C, in 1937 and 1939, the Pennsylvania Academy in 1940, the Carnegie Institute's International Exhibition in 1943, the Virginia Museum of Fine Arts and the National Institute of Arts and Letters.
Lavish, beautiful color was Blum's first love, and she employed a high-keyed palette in all catagories of her work to creat vibrant compositions. During the first half of her career, women were a favorite subject and she captured them in a wide variety of work from portraits to interiors to peasant women and later she produced some of her best floral still life works. Private Gallery exhibitions included the Wildenstein Gallery, Milch, Harry Salpeter and Albatross Galleries in New York.
After World War II, Blum lived in France for the most part and exhibited there at the Andre Weill Gallery and Gallerie Andre Maurice in Paris and the Cellier de Clairvaux in Dijon. Still - life and landscapes became the dominant catagories of her work. Her color and handling of the paint became very lavish, combining both impressionism and expressionism in her own distinctive stile.