August 2006 issue of the Cornell Flower Bulb Research Program Research Newsletter:
Given the current trend of container gardening, and mixed containers, it comes as no surprise that consumers are more and more interested in mixed bulb and perennial plantings. The classic partnering of narcissus and daylily provides a nearly perfect combination of utility and beauty: the daffodil will flower before the daylily leaves are too tall, so the full flower effect can be viewed, but soon thereafter the daylily leaves hide the senescing daffodil leaves.