Cake Flowers Many couples choose to decorate the cake with flowers instead of bride and groom figures. The flowers may be display in a silver vase or a small spray laid on top of the cake. A simple yet effective alternative is to place a single flower on the cake. Any flower which sits flat such as a stem less, slightly opened rose or a large daisy will be suitable. The caterer who supplies the cake will be able to supply the flowers and vase. Alternatively the florist supplying the bouquet and other flowers could also supply the cake flowers to ensure a harmonious color match