Ideal Flower Match: Sweet peas (shown), poppies, or gloriosa lilies.

Why the Pairing Works: A bubble-shaped vessel with a small, ruffled opening helps rein in unruly blooms while keeping the arrangement loose. That’s key for vine flowers, such as sweet peas, which can get mildewy if tightly clustered, says Meredith Waga Perez, a co-owner of Belle Fleur, a floral- and event-design company in New York City. Because they stand about 10 inches high, sweet peas require a low vase.

How to Arrange a Bouquet: Trim the stems, take a bunch in hand, then casually let the blooms drop into the container all at once so they spill around it, says Cecelia Heffernan, owner of the floral shop Flower Hardware, in Wilson, Wyoming, and the author of Flowers A to Z (Harry N. Abrams, $23, www.amazon.com).