shrub

Red Pillar Rose-of-Sharon

Hibiscus syriacus 'Red Pillar'

Not currently listed at our partner nurseries.

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Essentials

At a Glance

Plant Type

Shrub

Height

120 inches

Width

36 inches

Light

Full Sun, Partial Sun

Zones

5, 6, 7, 8, 9

Water

Moderate

Humidity

Moderate to high

Lifespan

Decades

Native To

Asia and the Middle East

Toxicity

Non-toxic to humans and pets

The Story

Plant Bio

Hibiscus syriacus 'Red Pillar' is a hardy shrub with a columnar growth habit, known for its vibrant red flowers. This cultivar is noted for its upright form, making it suitable for narrow spaces and providing a striking vertical element in the garden.

Bloom Period:

EarlyLate

Uses & Benefits:

Vivid red flowers add striking color to gardens and landscapes.

Provides privacy as a tall, dense hedge.

Attracts pollinators like butterflies and hummingbirds.

Marketplace

Where to Buy

We couldn't find this plant listed online right now.

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Planting

How to Grow

Select a sunny location with well-drained soil for planting.
Tuck young plants into the ground, spacing them 3-4 feet apart.
Water thoroughly after planting to establish roots.
Apply a balanced fertilizer every spring for healthy growth.
Prune in late winter to maintain shape and encourage flowering.
Mulch around the base to retain moisture and suppress weeds.

Pro Tip

Pinch back new growth to promote bushier, more abundant flowering.

Keep It Thriving

Care Guide

Do

Water regularly during dry periods 💧
Prune dead or damaged branches annually ✂️
Feed with a balanced fertilizer in spring 🌱

Don't

Avoid overwatering to prevent root rot ❌
Don’t prune in late summer or fall ❌
Skip fertilizing during dormant winter months ❌

Seasonal Care Calendar

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

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Vibrant hedge with fiery red flowersColorful patio container focal pointInformal garden border with striking blooms

Companion Plants

Lavender Salvia Daylilies Coreopsis Echinacea

Multiply

Propagation Methods

Good to Know

Common Questions

Red Pillar Rose-of-Sharon questions

What zones can Red Pillar Rose-of-Sharon grow in?

Red Pillar 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 Red Pillar Rose-of-Sharon deer resistant?

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

When does Red Pillar Rose-of-Sharon bloom?

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

Does Red Pillar Rose-of-Sharon need full sun?

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

Is Red Pillar Rose-of-Sharon drought tolerant?

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