Daylilies bloom season is approximately 30 to 40 days, from late spring to fall, with single blooms lasting a single day, according to SFGate. A daylily plant is capable of producing hundreds of blooms during a season.
Daylily blooms can be generally any color but white and blue. The blooms grow on stalks called scapes. They can be single blooms or double, and they can be solid colors or multicolor. When the flowers start to wither away, deadhead the spent blooms. The blooming season is prolonged by deadheading. To deadhead, pinch off the bloom. Remove all diseased and damaged limbs to encourage growth.