Right now is a good time to plant snapdragons(transplants), larkspur seeds(blue & white), poppy seeds, cornflower seeds(bachelor buttons, blue & white), & sweet allysum(transplants). For year round green you could plant rosemary, roses and boxwood. There are hundreds of plants devoted to Mary, but at least this gives you a start...A beautiful statue for Christmas, perhaps?
Blessings from the Garden..
ML