This is a major consideration in identifying plant species suitable for use in floristry, as plants with a long vase life are far more desirable than those with a short vase life.
[1] Vase life can be affected by pre-harvest factors, such as growing conditions or genetic makeup, or post-harvest factors, such as mechanical damage, bacteria or fungi.
[2] Keeping flowers in cooler temperatures, usually via refrigeration, can extend their vase life, as can hydrating them, preferably with soft water.
Cut flowers with a short vase life, of less than 5 days, include dahlias, irises, daffodils, and delphinium; flowers with a medium vase life (6 to 14 days) include marigolds, snapdragons, orchids, and roses; and flowers with a long vase life (2 to 4 weeks) include tulips, carnations, and chrysanthemums.
[2] Chemical treatments that extend vase life are a major component of floriculture research.