Hemerocallis, common name Day Lily, is a spectacular summer flowering plant, most of which are herbaceous and vary in size from small compact varieties of around 30cms to the taller varieties of up to 1.5m. Hemerocallis is long flowering with large trumpet-shaped flowers, often with stripes and attractive clump forming foliage. Even though each individual flower is short lived, the plant will be in flower for around 4-6 weeks. The name Hemerocallis means 'beautiful for a day'.
Many Day Lilies are herbaceous, which means they die back completely in the winter leaving bare earth and emerge in the spring with fresh growth. In milder areas, they can be evergreen or semi-evergreen.
To grow Day Lilies (Hemerocallis) requires some effort, for which reason I tagged them as an amber wheelbarrow plant. Hemerocallis are unfussy about the soil and their only real requirement is sun to encourage flowering, but they need some maintenance.
The effort is that some of the taller, larger Day Lilies will need to be staked. All varieties will need regular dead heading to keep them flowering. The new growth may look very upright as it emerges, but don't be fooled, the taller varieties of Day Lily look much better with some staking and support. In spring, (or when you get round to it,) as the growth emerges, place a support under their foliage to keep the plant upright and stop it collapsing later in the season when there are many blooms.
Day Lilies need to be dead headed regularly to keep the plant looking good. Each stem has multiple flowers, which is good in the sense of making the plant attractive, but it means dead heading as the flowers are short-lived they need to be removed regularly to keep the plant in good shape. After flowering, each stem can be cut to the ground. Once the plant has flowered and the foliage looks tatty, cut the foliage to the ground and it will reward you with fresh lush growth for the rest of the summer, although it will not flower again.
The plus side is that day lilies flower constantly from late spring to early- mid summer, with strong lush foliage and make excellent border plants. They form large clumps, see third image above, and produce good strong colour. They look spectacular, producing large trumpet-shaped flowers in varying shades of yellow, orange, red and deepening down to crimson.
Day Lilies make an excellent cut flower.