Centerpiece table arrangements are horizontal, typically one-third as high as they are long, and no more than 12 inches high, to promote ease of conversation across the table. Guests can view these arrangements, which are usually symmetrical, from every side. Spray and single roses are common choices as focal flowers in centerpieces. Line flowers, such as liatris, may rise slightly above the arrangement, providing visual interest. Use candles to give the arrangement height, if desired. Baby's breath, statice and small pieces of greenery provide the finishing touches.
These arrangements decorate the opposite ends of long, rectangular tables or one end of a round or square table in place of a guest. Because these arrangements are not in the center of the table, they can be taller, and consist of larger flowers. Line flowers include gladiolus, molucellas or even cattails, while magnolias, sunflowers and roses make good focal flowers for arrangements such as these. The shape of the design is often vertical, or three times as tall as it is wide.
Arrangements for a buffet should be proportioned to the size of the table, according to Save on Crafts. These arrangements can be various sizes, so make use of all types of flowers. Delphiniums, veronicas or gladioli work beautifully as line flowers, while carnations, lilies and roses make excellent focal flowers. Filler flowers for this type of arrangement include baby’s breath, Queen Anne's lace and statice.