Species

Hibiscus syriacusRose of Sharon

34 other cultivars

shrub

Regal Splendor Rose of Sharon

Hibiscus syriacus 'Regal Splendor'

The Story

Plant Bio

A deciduous shrub with large, showy flowers that bloom from mid-summer to early fall.

The 'Regal Splendor' cultivar is known for its striking purple petals with a darker purple base, making it a standout in landscapes.

Uses & Benefits:

Hibiscus syriacus Regal Splendor offers large, vibrant flowers that enhance garden aesthetics and attract pollinators.

Provides privacy as a hedge and can be used to create colorful screens.

Supports local pollinators like bees and butterflies with its nectar-rich blooms.

SpeciesHibiscus syriacusRose of Sharon

Essentials

At a Glance

Plant Type

Shrub

Height

120 inches

Width

96 inches

Light

Full Sun, Partial Sun

Zones

5, 6, 7, 8, 9

Water

Moderate

Humidity

Average

Lifespan

Perennial

Native To

East Asia

Toxicity

Non-toxic to pets

Planting

How to Grow

Tuck young plants into well-drained soil in spring after the last frost.
Water deeply once a week during the growing season to encourage strong roots.
Mist cuttings regularly to maintain humidity and promote rooting.
Fertilize monthly with a balanced fertilizer during the active growing months.
Prune in late winter to shape and remove dead or crossing branches.
Mulch around the base to retain moisture and suppress weeds.

Pro Tip

Use organic compost to enrich soil and promote vibrant blooms.

Keep It Thriving

Care Guide

Do

Water regularly, especially during dry spells 🌱
Prune to maintain shape and encourage flowering
Apply balanced fertilizer monthly
Mulch to conserve moisture and regulate soil temperature
Monitor for pests and diseases

Don't

Avoid overwatering to prevent root rot ❌
Don't fertilize late in the season to prevent weak growth
Never prune in late fall or winter
Avoid planting in poorly drained soils
Don't ignore signs of pests or disease

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Fertilize
Mulch
Propagate
Prune

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Vibrant flowering shrub for hedgesColorful border plant with lush foliageContainer centerpiece for patios

Companion Plants

Lantana SalviaDaylilies Petunias Coreopsis

Multiply

Propagation Methods

Good to Know

Common Questions

Regal Splendor Rose of Sharon questions

What zones can Regal Splendor Rose of Sharon grow in?

Regal Splendor Rose of Sharon is hardy in USDA Zones 5–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Regal Splendor Rose of Sharon deer resistant?

Yes — Regal Splendor Rose of Sharon is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.

When does Regal Splendor Rose of Sharon bloom?

Regal Splendor Rose of Sharon typically blooms in mid-summer to fall through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Regal Splendor Rose of Sharon need full sun?

Regal Splendor Rose of Sharon does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.

Is Regal Splendor Rose of Sharon drought tolerant?

Yes — once established (usually after the first full season), Regal Splendor Rose of Sharon handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.