What is Daylily?

Daylily, scientifically known as Hemerocallis, is a perennial flowering plant that belongs to the family Xanthorrhoeaceae. It is native to Asia, including China, Korea, and Japan, but has been widely cultivated and naturalized in various parts of the world. Daylilies are known for their vibrant and showy flowers, which come in a wide range of colors, shapes, and sizes. They are popular among gardeners and horticulturists due to their hardiness, adaptability, and long blooming period.

Characteristics of Daylilies

Daylilies are herbaceous plants that grow from a crown, producing long, slender leaves that form a clump. The leaves are typically green, but some varieties may have variegated or striped foliage. The flowers of daylilies are trumpet-shaped and have six petals, with a wide range of colors including yellow, orange, red, pink, purple, and bi-color combinations. The flowers usually last for a single day, hence the name “daylily,” but new buds continue to open, providing a continuous display of blooms throughout the blooming season.

Daylilies are known for their adaptability to various soil types and growing conditions. They can tolerate both full sun and partial shade, although they tend to perform best in areas with at least six hours of direct sunlight per day. They are also relatively drought-tolerant and can withstand periods of dryness. Daylilies are hardy plants and can survive in USDA hardiness zones 3 to 9, making them suitable for a wide range of climates.

Popular Varieties of Daylilies

There are thousands of daylily cultivars available, each with its own unique characteristics and attributes. Some of the popular varieties include:

Stella de Oro: This is one of the most popular daylily varieties, known for its golden yellow flowers and compact size. It blooms profusely and has a long blooming period, making it a favorite among gardeners.

Happy Returns: This variety is similar to Stella de Oro but has pale yellow flowers. It is also a repeat bloomer, producing multiple waves of blooms throughout the season.

Pardon Me: Pardon Me is a small-sized daylily with deep red flowers and a yellow throat. It is known for its compact habit and prolific blooming.

Hyperion: Hyperion is a classic daylily variety with fragrant, lemon-yellow flowers. It has a tall and upright growth habit, making it suitable for the back of the border.

Chicago Apache: This variety features striking red flowers with a yellow throat. It is a midseason bloomer and adds a bold splash of color to any garden.

How to Grow Daylilies

Daylilies are relatively easy to grow and require minimal maintenance. Here are some tips for successfully growing daylilies:

1. Site Selection: Choose a location that receives at least six hours of direct sunlight per day. Daylilies can tolerate a wide range of soil types but prefer well-draining soil.

2. Soil Preparation: Prepare the soil by removing any weeds or grass and loosening it with a garden fork or tiller. Incorporate organic matter, such as compost or aged manure, to improve soil fertility and drainage.

3. Planting: Dig a hole that is wide and deep enough to accommodate the daylily roots. Place the plant in the hole, making sure the crown is level with the soil surface. Backfill the hole and gently firm the soil around the plant.

4. Watering: Water the newly planted daylilies thoroughly and keep the soil evenly moist until they become established. Once established, daylilies are relatively drought-tolerant and only require supplemental watering during prolonged dry spells.

5. Fertilizing: Apply a balanced slow-release fertilizer in early spring to promote healthy growth and abundant blooms. Follow the manufacturer’s instructions for application rates.

6. Mulching: Mulch around the base of the plants with a layer of organic mulch, such as shredded bark or straw. This helps conserve moisture, suppress weeds, and regulate soil temperature.

7. Pruning: Remove spent flowers to encourage continuous blooming and prevent seed formation. Cut back the foliage to the ground in late fall or early spring to promote new growth.

8. Division: Daylilies can become crowded over time, leading to reduced blooming. Divide the clumps every three to five years in early spring or late summer to rejuvenate the plants.

Common Pests and Diseases

While daylilies are generally resistant to pests and diseases, they can occasionally be affected by certain issues. Some common pests that may infest daylilies include aphids, thrips, and spider mites. These pests can be controlled through regular monitoring and the use of insecticidal soaps or horticultural oils.

Daylilies can also be susceptible to fungal diseases such as leaf spot, crown rot, and rust. To prevent these diseases, avoid overhead watering and provide adequate spacing between plants to promote air circulation. If necessary, fungicides can be used according to the manufacturer’s instructions.


Daylilies are beautiful and versatile plants that can add color and interest to any garden. With their wide range of colors and adaptability to various growing conditions, they are a favorite among gardeners and horticulturists. By following the proper planting and care techniques, you can enjoy the vibrant blooms of daylilies throughout the blooming season. Whether you’re a beginner or an experienced gardener, daylilies are a great choice for adding beauty and charm to your outdoor space.