Daylilies prefer a well-drained soil in a sunny location. They can grow in partial shade, but the number of blooms will be less compared to daylilies growing in full sun. Do not over fertilize daylilies. When too much nitrogen is applied, the plant grows at the expense of the flowers, and the foliage becomes weak and falls over. Diploid daylilies have the normal chromosome number in the cells of the plant.
Chromosomes contain genetic information which determines the characteristics of the plant.
Diploid daylilies may have a more graceful and relaxed form. The flowers tend to have softer colors compared to the tetraploids. Tetraploid daylilies have double the normal amount of chromosomes. The plants tend to be husky and have more blooms per flower stem. The flowers are usually larger and more intense in color than the diploids.