TheBridesBouquet.com Navy Silk Rose Cake Flowers - Reception Decoration 12 Beautiful, natural-looking navy roses and petals to decorate your wedding cake versatile cake flower set comes with 12 navy garden rose heads and 200 matching rose petals ose heads measure approximately 3 inches across and you will receive 12 of them to use as you need navy silk rose petals measure approximately 1 1/2 inches diameter and you will receive about 200 sprinkle the petals all over the table or just cluster them around your cake as we did in the photo