Mini Calla Lilies Medium Stem comes in lengths falling between 16 to 20inches. Ideally, the length of the medium stems permit for creating large boutonnieres, small to medium-size wedding bouquets and table centerpieces. For a more petite look, consider the short length stem size. For added presence, our long stems make for an excellent choice. They are available year round. Make sure to order them at least 4 weeks in advance, before your wedding or event to ensure product and color availability.