The Mary Swords DeBaillon Medal is the highest award for an iris bestowed by the Society for Louisiana Irises. Beginning in 1948, the award was has been given in most years since then.  From 1948 to 1986, when the Society was unaffiliated with the American Iris Society, it was called an "Award," and subsequently a "Medal."  Prior to affiliation, it was possible for an iris to win the award more than once.  In several years and for various reasons, no award was made.

Mary Swords DeBaillon was an early enthusiast and collector of Louisiana irises.  She corresponded with Dr. John K. Small and was an important figure in the "years of collecting."  The Society of Louisiana Irises, formed in 1941, was originally named the "Mary Swords DeBaillon Iris Society."  

To look chronologically at the DeBaillon winners from the first award in 1948 to those in recent years is to experience a telescopic review of the development of Louisiana irises beginning with the species and near-species forms of early natural hybrids collected in the wild in Louisiana. The review takes one through the results of early controlled hybridization and to the latest and most popular cultivars being produced today.  The favored forms have evolved to larger, fuller, fancier flowers, but the appeal of the graceful and simpler forms of earlier plants remains strong, especially in a garden setting.