Crocosmia Arrangement - Let long stems arch out of a trumpet vase for an ethereal arrangement. Flower stems naturally follow the shape of this vase: They reach up and out, and the result is delicate and light. Choose flowers with graceful stems, such as this crocosmia, for the most pleasing look. Shorter cuttings of maidenhair fern float beneath the blooms. Echo the idea with smaller vessels -- parfait glasses work perfectly -- holding just a few stems.