Althaea syriacus 'Diana'

Rose of Sharon/Hibiscus

A classic, elegant Rose of Sharon featuring large, pure white flowers with no contrasting eye. ‘Diana’ is especially valued for its clean color, strong summer bloom, and very low seed production, making it a favorite where volunteers are a concern.

Key features



Width: 6–8 ft



Height: 8–12 ft



Flower color: Pure white



Bloom time: Mid to late summer



Form: Upright, dense, vase-shaped shrub



Life cycle: Deciduous shrub



Growing conditions



Sun: Full sun



Soil: Average, well-drained; adaptable



Water: Moderate; drought tolerant once established



Hardiness: USDA Zones 5–9



Landscape use



Shrub borders and mixed hedges



Specimen or focal shrub



Screening and foundation plantings



Pollinator gardens



Notes



Very low seed / nearly sterile, minimal volunteer seedlings



Deer resistant once established



Attracts bees, butterflies, and hummingbirds



Blooms on new wood; prune in late winter or early spring if needed

Plant type

Flowering Ornamental Tree, Flowering Shrub

Height

8'

Width

6-8'

Hardiness zones

5–8

Sunlight

Full Sun, Partial Shade

Growth rate

Moderate

Bloom time

Early Fall, Fall, Late Summer

Flower color

White

Leaf color

Dark Green

Fall color

Green, Yellow

Fruit color

Brown

Attracts

Butterflies, Hummingbirds

Soil

Loamy well-drained

Shape

Broad Upright, Vase Shaped

Bark

Smooth

Fruit

Yes

Fragrant

Yes

Deer resistant

Yes

Drought tolerant

Yes