Bright-green limes are a fresh and modern foil for cut-flower arrangements. They are most effective when displayed in clear glass vases where their color and form are readily visible. Limes can be left whole or can be halved or sliced according to your preference. Cut limes should be submerged in water to prevent oxidation, but whole limes can remain dry and can be reused after the arrangement has faded. Both will disguise the stems and provide a dramatic visual effect. For very small arrangements, tiny key limes can be used to provide even more coverage of the stems.
Fill the bottom quarter of a square, round or oval glass vase with enough fresh, clean, cut or uncut limes to cover the area. Set a second, smaller watertight container, also preferably clear glass, on top of the limes centering it inside the larger vase. Add or subtract the limes underneath so that the lips of the two vases are level.
Slide whole limes or halves or slices down between the two vases, pressing gently to create a full, lush look. Fill the outer vase evenly and to the very top with limes.
Fill the outer vase with cool water to cover the limes. Fill three quarters of the inner vase with cool water for your flowers.
Cut your flower stems and greenery or filler flowers to the desired length, and put them into the vase, turning the arrangement as you work to ensure that it is roughly symmetrical and looks attractive from every vantage point from which it will be observed.