1. Soak blocks of floral foam in water until they are completely saturated.
2. Wedge the saturated blocks into a plastic wreath form. Stand the wreath on edge (as if hanging on the wall) to let excess water drain.
3. Cut the stems of the red and white carnations to about 2 inches.
4. Insert the flower heads into the foam, pushing the stems in all the way. If the flowers aren't fully open, leave about 1/8 to 1/4 inch of space between the flowers; if they are fully open, pack them together tightly. Continue inserting the flower heads, creating alternating red and white stripes.
5. Tie a bow out of ribbon to complete the
wreath. Attach it by looping a short wire through the knot of the bow and inserting it into the floral foam between the flowers.