Perennial Flower

When to Plant Daylilies

Nearly indestructible perennials with stunning trumpet-shaped blooms. Each flower lasts just one day, but the show goes on for weeks.

Sun

Full sun to partial shade (4-6 hours)

Water

1 inch per week

Days to Harvest

365+

Difficulty

beginner

Spacing

18"

Frost Tolerance

very high

The Short Answer

Plant daylilies after your last frost date when soil reaches 60°F. Enter your zip code on our homepage tool for exact dates.

How to Grow Daylilies

Despite the name, each daylily flower lasts only one day — but well-grown plants produce so many buds that the show continues for weeks. Stella de Oro is the bestselling perennial in America because it's nearly indestructible and reblooms from June through frost. For taller, more dramatic flowers, choose cultivars from specialty hybridizers — the range of colors, patterns, and forms is extraordinary. Daylilies are one of the few perennials that actively benefit from division every 3-4 years; the divided plants bloom more vigorously than overcrowded clumps.

Transplanting

Move seedlings outside 0 weeks after your last frost date, once soil temperatures reach 50°F.

Growing Tips

Plant bare-root or divisions in spring or fall. Divide clumps every 3-4 years to maintain vigor. Deadhead to keep gardens tidy.

Companion Planting

Good companions:

Coneflowers Black Eyed Susans

Daylilies Planting Dates by State

Click your state for daylilies planting dates specific to your location:

Alabama Alaska Arizona Arkansas California Colorado Connecticut Delaware Florida Georgia Hawaii Idaho Illinois Indiana Iowa Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan Minnesota Mississippi Missouri Montana Nebraska Nevada New Hampshire New Jersey New Mexico New York North Carolina North Dakota Ohio Oklahoma Oregon Pennsylvania Rhode Island South Carolina South Dakota Tennessee Texas Utah Vermont Virginia Washington West Virginia Wisconsin Wyoming

Note: Planting dates are based on average frost dates from NOAA Climate Normals (30-year averages). Actual conditions vary year to year. Always check your local forecast before planting frost-sensitive crops.

Last reviewed: March 29, 2026