Hibiscus syriacus 'Regal Splendor'
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:

Ornamental UsesHibiscus syriacus Regal Splendor offers large, vibrant flowers that enhance garden aesthetics and attract pollinators.
Practical UsesProvides privacy as a hedge and can be used to create colorful screens.
Ecological BenefitsSupports local pollinators like bees and butterflies with its nectar-rich blooms.

Essentials

At a Glance

Plant Type

Shrub

Height

120"

Width

96"

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

Bloom period

Mid-summer to fall – Late summer

J
F
M
A
M
J
J
A
S
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In flower about 2 months of the year

Planting

How to Grow

  1. Tuck young plants into well-drained soil in spring after the last frost.
  2. Water deeply once a week during the growing season to encourage strong roots.
  3. Mist cuttings regularly to maintain humidity and promote rooting.
  4. Fertilize monthly with a balanced fertilizer during the active growing months.
  5. Prune in late winter to shape and remove dead or crossing branches.
  6. 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

TaskJanFebMarAprMayJunJulAugSepOctNovDec
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

LantanaSalviaDaylilies Petunias Coreopsis

Multiply

Propagation Methods

Good to Know

Common Questions