How long do flowers usually last?

Some flowers, like Bachelors Buttons, Zinnias, Marigolds, and Petunias last pretty much from the time they begin blooming until frost. Others, like Irises, Tulips, and Daffodils bloom in the spring for a short time. Daylilies bloom in the summer. Mums bloom in the fall. More varieties bloom longer if you pinch off the old blooms. The best way to choose flowers for the bloom-time you require is to get one or more seed catalogs or a book of flowers that gives information on every one.