Hibiscus syriacus 'Red Heart'

Red Heart Rose-of-Sharon

Hibiscus syriacus ‘Red Heart’ is a classic deciduous flowering shrub valued for its large white flowers marked by a vivid crimson-red eye. It develops an upright, vase-shaped habit with dense green foliage that provides a lush backdrop through the growing season. From mid-summer into early fall, large single blooms open in pure white with a bold red center, creating strong contrast and bright summer color in the landscape.

Type: Deciduous shrub

Mature Size:
Width: 6–8 ft
Height: 8–10 ft
(10-year size: typically 6–8 ft tall)

USDA Zones: 5a–9b
Form: Upright, vase-shaped shrub
Light: Full sun
Soil: Average, well-drained soils; tolerant of clay and urban conditions
Water: Moderate; drought tolerant once established

Wildlife: Attracts bees, butterflies, and hummingbirds; deer moderately resistant


Features & Landscape Uses


White flowers with vivid crimson-red eye



Long bloom period from mid-summer to fall



Bright contrast in summer borders



Ideal for hedges, screens, and specimen plantings




Care
Prune in late winter or early spring since flowers form on new wood. Remove unwanted seedlings if naturalizing is not desired. Adaptable to heat, humidity, and urban conditions once established.

Plant type

Deciduous Shrub, Flowering Deciduous Shrub

Height

8-10'

Width

6-8'

Hardiness zones

5–8

Sunlight

Full Sun

Growth rate

Fast

Bloom time

Early Fall, Fall, Late Summer

Flower color

White

Leaf color

Green

Fall color

Yellow Green

Attracts

Butterflies, Hummingbirds

Soil

Highly Adaptable, Humus rich, Well Drained

Landscape use

Accent Plant, Foundation Plant, Hedge, Mass Planting

Shape

Upright, Vase Shaped

Bark

Smooth

Fruit

Yes

Fragrant

Yes

Deer resistant

Yes

Drought tolerant

No