Daylilies bloom with individual flowers lasting only one day, which is why they are named "daylilies." However, the plants produce multiple blooms on each flower stem (scape) over a period of several weeks. Typically, daylilies bloom continuously for about four to five weeks, with new flowers opening daily on the stems

. The bloom period can vary depending on the variety and climate. Most daylilies bloom from late spring to summer, with peak bloom often in June or July. Some varieties, known as rebloomers or ever-bloomers, can extend their flowering season from spring well into fall, sometimes blooming for several months if properly cared for

. Regular deadheading (removing spent flowers) encourages more blooms and can help prolong the flowering period

. In summary:

• Each flower lasts one day.
• Plants produce successive blooms over 4 to 5 weeks on average.
• Reblooming varieties can flower from spring through fall.
• Deadheading promotes longer bloom time.

This makes daylilies a long-blooming perennial despite the short life of each individual flower