perennial

Stella Supreme Daylily

The Story

Plant Bio

Daylilies are a cornerstone of the low-maintenance perennial garden, offering a long season of color and adapting to a multitude of challenging site conditions.

'Stella Supreme' improves upon the legendary 'Stella de Oro' with larger, fragrant, clear lemon-yellow flowers and an even more prolific and continuous blooming habit from summer to frost.

Uses & Benefits:

Provides a nearly non-stop display of cheerful, fragrant, lemon-yellow flowers from early summer until frost. Its compact size and neat, grassy foliage make it an attractive and versatile garden plant.

It is one of the most reliable and low-maintenance perennials for mass plantings, groundcover, and edging. Its ability to thrive in tough conditions makes it a go-to for both residential and commercial landscapes.

The long and continuous bloom period provides a sustained nectar source for pollinators like bees and butterflies throughout the growing season, supporting local insect populations.

Essentials

At a Glance

Plant Type

Perennial

Height

16 inches

Width

18 inches

Light

Full Sun, Partial Sun

Zones

4, 5, 6, 7, 8, 9

Water

Moderate

Humidity

Adaptable

Lifespan

Long-lived perennial

Native To

Hybrid

Toxicity

Non-toxic to humans, but toxic to cats

Bloom period

Early summer – Early fall

In flower about 4 months of the year

Planting

How to Grow

Choose a location with at least six hours of sun daily.
Loosen soil and mix in a layer of compost.
Dig a hole slightly wider and deeper than the root ball.
Place the plant in the hole, ensuring the crown is at soil level.
Backfill with soil, press down firmly, and water well.
Mulch to a depth of 2 inches to retain moisture.

Pro Tip

While it tolerates drought, consistent watering will produce the most impressive and continuous flower show throughout the summer and fall.

Keep It Thriving

Care Guide

Do

Provide full sun for maximum flowering.
Water deeply during dry spells.
Divide clumps when they become overcrowded.
Remove spent flower scapes to keep the plant looking fresh.

Don't

Do not plant in deep shade.
Avoid planting the crown too deep.
Don't let weeds compete with the plant, especially when young.
Avoid waterlogged soil, particularly in winter.

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Deadhead
Divide
Fertilize
Plant

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Bright and cheerful border edgingUnbeatable for long-season mass plantingsReliable groundcover for sunny slopes

Companion Plants

Salvia 'May Night'Coreopsis verticillata 'Zagreb'Nepeta x faassenii 'Walker's Low'Lavandula angustifolia 'Munstead'Sedum 'Autumn Fire'

Multiply

Propagation Methods

Good to Know

Common Questions

Stella Supreme Daylily questions

What zones can Stella Supreme Daylily grow in?

Stella Supreme Daylily is hardy in USDA Zones 4–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Stella Supreme Daylily deer resistant?

Not reliably. Deer may browse Stella Supreme Daylily, especially tender spring growth — plan on repellents or fencing where pressure is high.

When does Stella Supreme Daylily bloom?

Stella Supreme Daylily typically blooms in early summer through early fall. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Stella Supreme Daylily need full sun?

Stella Supreme Daylily does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.

Is Stella Supreme Daylily drought tolerant?

Yes — once established (usually after the first full season), Stella Supreme Daylily handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.