Daylily Care: Expert Guide

We've been growing daylilies at our North Florida nursery since 1980, and after 45 years they still earn their spot as one of the most forgiving perennials we ship. Give a daylily six hours of sun and decent drainage and it will bloom for years with almost no fuss. That reliability is why gardeners keep coming back to them, and why we keep a full lineup of daylilies for sale that we grow and care for ourselves right here on the farm.

This guide covers everything we tell customers who call the nursery with daylily questions: where to plant them, how to water and feed them, what to do after they bloom, and how to keep them healthy through every season.

Daylily Basics at a Glance

• Botanical name: Hemerocallis
• Sunlight: Full sun, at least 6 hours daily
• Soil: Moist, well draining
• Hardiness: USDA Zones 4 to 9, depending on variety
• Bloom time: Spring through summer, with rebloomers flowering repeatedly
• Mature size: Most garden varieties reach 1 to 3 feet tall in spreading clumps
• Care level: Easy, one of the lowest maintenance perennials you can grow

Are Daylilies Easy to Care For?

Yes, and we say that as people who grow thousands of them. Daylilies tolerate heat, humidity, short dry spells, and a wide range of soils. Each bloom lasts a single day, which is where the name comes from, but every flower stalk (called a scape) carries multiple buds that open one after another. Reblooming varieties like Stella de Oro push out fresh scapes all season long.

If you can only plant one perennial and want color from spring into fall, a reblooming daylily is the safest bet we know.

Where to Plant Daylilies

Pick a spot with at least 6 hours of direct sunlight. Daylilies will survive in partial shade, but bloom count drops noticeably. Down here in Florida we give darker red and purple varieties a little afternoon shade so the flower color doesn't fade in the intense sun. Gardeners in cooler zones can plant them in full sun all day.

Soil matters less than drainage. Daylilies handle clay, sand, and everything between as long as water doesn't pool around the roots. If your soil stays soggy after rain, plant on a slight mound or work in compost to loosen things up.

How to Plant Daylilies

1. Dig a hole slightly wider than the root ball and just as deep.
2. Set the plant so the crown (where the leaves meet the roots) sits about 1 inch below the soil surface. Planting too deep is the most common reason a daylily refuses to bloom.
3. Backfill, firm the soil gently, and water thoroughly.
4. Space plants 18 to 24 inches apart. They will fill the gaps within a couple of seasons.
5. Add a 2 inch layer of mulch, keeping it off the crown.

Spring and early fall are the best planting windows in most of the country. Container grown daylilies like the ones we ship can go in the ground any time the soil is workable.

Watering and Fertilizing Daylilies

Water deeply once or twice a week during the first growing season while roots establish. After that, established daylilies only need supplemental water during extended dry spells. About 1 inch of water per week, from rain or the hose, keeps them blooming their best.

Feed with a balanced slow release fertilizer in early spring as new growth emerges. Rebloomers appreciate a second light feeding in midsummer. Skip high nitrogen lawn fertilizers near your daylily beds. They push lush foliage at the expense of flowers.

How to Care for Daylilies After They Bloom

This is the question we hear most at the nursery. Here's the routine we use on our own growing beds:

• Deadhead spent blooms. Snap off faded flowers every day or two. It keeps plants tidy and stops them from wasting energy on seed pods.
• Cut spent scapes to the base. Once every bud on a stalk has finished, cut the whole scape down near the crown.
• Keep watering and feeding rebloomers. Consistent moisture after the first flush is what triggers the next round of scapes on varieties like Happy Returns.
• Remove yellowing leaves. Pull or trim any foliage that browns out. Fresh green growth will take its place.

Seasonal Daylily Care

Spring

Clear away any old foliage left from winter, apply fertilizer as new fans emerge, and refresh mulch. This is also a good time to divide crowded clumps.

Summer

Deadhead regularly and water during dry stretches. In hot climates, a deep weekly soak beats frequent light sprinkles. Watch for aphids and spider mites on stressed plants. A strong spray of water usually knocks them back.

Fall

After the final blooms fade, cut foliage back to within a few inches of the ground once it yellows and dies down naturally. Remove the trimmings from the bed so pests and disease have nowhere to overwinter. Fall is also our favorite season for planting new daylilies in Zones 6 and warmer, since roots establish in the cool weather and plants hit the ground running in spring.

Winter

Daylilies are tough. In Zones 4 and 5, a few inches of mulch over the crown after the ground freezes adds cheap insurance. In warmer zones, including here in Florida, they need no winter protection at all. Evergreen varieties hold some foliage year round in mild climates.

Pruning Daylilies

Daylily pruning is really just three tasks: deadheading spent blooms, cutting finished scapes, and cutting back dead foliage in late summer or fall. There's no shaping or hard pruning involved. Use clean, sharp pruners or scissors, and never cut healthy green foliage in midseason since the leaves are feeding next year's blooms.

Dividing Daylilies

Daylilies spread into dense clumps over time, which makes them a fine flowering ground cover. When a clump gets crowded, usually every 3 to 5 years, bloom production drops. That's your signal to divide.

Dig the whole clump in early spring or right after flowering, shake off the soil, and pull or cut it apart into sections with at least two or three fans each. Replant the divisions at the same depth and water them in well. One healthy clump can turn into half a dozen new plants, which is one of the best bargains in gardening. Because this can be a bit tricky, we've put together a guide for our gardeners on when and how to divide Daylily plants.

Growing Daylilies in Pots

Compact varieties do well in containers. Choose a pot at least 12 inches wide with drainage holes, use a quality potting mix, and place it in full sun. Potted daylilies dry out faster than in ground plants, so check soil moisture every few days in summer. In Zones 4 and 5, move containers to an unheated garage or sink them into the ground for winter since roots in pots face colder temperatures than roots in soil.

Common Daylily Problems

• Few or no blooms: Usually too much shade, planting too deep, or an overcrowded clump that needs dividing.
• Daylily rust: Orange powdery spots on leaves. Remove affected foliage and improve air circulation. Resistant varieties like Stella de Oro rarely have trouble.
• Aphids and spider mites: Blast with water or treat with insecticidal soap.
• Deer browsing: Deer will sample daylily buds. Repellent sprays applied as buds form work well in high pressure areas.

Our Favorite Daylilies to Grow

After decades of trialing varieties on our farm, these four are the ones we recommend most often. Each one is grown, cared for, and shipped by our team here in North Florida.

• Stella de Oro Daylily: The gold standard rebloomer. Compact golden yellow flowers from late spring to frost, and about as bulletproof as a perennial gets.
• Happy Returns Daylily: Soft lemon yellow blooms with the same repeat flowering habit as Stella, in a slightly cooler shade that pairs with everything.
• Little Business Daylily: Rich raspberry red blooms on a tidy compact plant. A favorite for borders and mass plantings where you want deep color.
• Purple de Oro Daylily: All the reliability of the de Oro family in royal purple with a golden throat. Reblooms freely and stays under 2 feet tall.

Frequently Asked Questions About Daylily Care

How do you care for daylilies?

Plant them in full sun with well draining soil, water about 1 inch per week, feed once in early spring, deadhead spent blooms, and cut foliage back after it dies down in fall. That's the whole routine for most varieties.

How do you care for daylilies after they bloom?

Snap off faded flowers, cut finished flower stalks to the base, and keep watering. Reblooming varieties will send up new stalks within a few weeks if they stay watered and fed.

How do you care for daylilies in the fall?

Once the foliage yellows and dies back, cut it to within a few inches of the ground and clear the debris from the bed. Add mulch over the crown in colder zones after the ground freezes.

Should you cut back daylilies for winter?

Yes, in most climates. Cutting back dead foliage in late fall keeps beds clean and removes hiding spots for pests. In mild climates, evergreen varieties can be left alone and tidied in spring.

How often should daylilies be divided?

Every 3 to 5 years, or whenever a clump becomes crowded and blooms less. Divide in early spring or just after flowering.

Do daylilies grow well in pots?

Compact varieties do. Use a container at least 12 inches wide with drainage holes, keep it in full sun, and water more often than you would in ground plants.