Hibiscus syriacus 'Helene'

Helene Rose-of-Sharon

Hibiscus syriacus ‘Diana’ is a refined deciduous flowering shrub valued for its large, pure white blossoms and elegant summer display. It develops an upright, vase-shaped habit with dense green foliage that provides a lush backdrop throughout the growing season. From mid-summer into early fall, large single flowers open in clear white tones without the typical dark center found in many Rose of Sharon varieties, creating a clean, bright appearance 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


Large pure white flowers without dark eye



Long bloom period from mid-summer to fall



Elegant upright shrub form



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

5–9

Sunlight

Full Sun

Growth rate

Fast

Bloom time

Early Fall, Fall, Late Summer, Summer

Flower color

White

Leaf color

Green

Fall color

Yellow Green

Attracts

Bees, Butterflies, Hummingbirds

Soil

Highly Adaptable, Humus rich, Well Drained

Landscape use

Accent Plant, Foundation, Hedge, Privacy Screen

Shape

Upright, Vase Shaped

Bark

Smooth

Fruit

Yes

Fragrant

Yes

Deer resistant

Yes

Drought tolerant

No