The red rose was adopted as the official flower of Deltasig at the first Board of Directors meeting in 1921. It was primarily the gift given to the wives and courted women of Deltasig brothers (which at the time was still all male). One of the founding fathers, Harold V. Jacobs, suggested a rose as the official fraternity flower because his wife loved roses and it was also her first name (Rose Jacobs). Five years later, in 1926, Jacobs also suggested that the song currently sung at LEAD schools and Grand Chapter Congress events, "Rose of Deltasig," be adopted as the official song of the fraternity.