Create your cake with a summer theme.
Instead of flowers made of icing, ask your baker to decorate with fresh flowers instead (use loose rose petals or a garland of fresh flowers around each tier), or ask about sugar-coated fresh flowers, which add an extra sparkle to the natural beauty of fresh flora. Decorate the cake with fresh fruits like lemons, limes, or grapes for a garden theme; maybe have a cake shaped like sunshine (Grooms Cake). Have your baker use latticework icing patterns on the cake for a gazebo effect, or decorate with seashells and starfish for a nautical beach theme. Have a chocolate wedding cake and serve it for dessert with fresh cream and summer berries or opt for a white chocolate cake instead of dark to keep with the light colour scheme and to complement the floral arrangements.