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Hibiscus syriacus 'Diana' AGM

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© RHS

Characteristics

Plant type

Shrub

Habit

Bushy

Resilience

Hardiness

H5 (hardy - cold winter)

Colour

Flower

White in Autumn and Summer

Foliage

Green in Autumn, Spring and Summer

Size

Ultimate height

1.5-2.5 metres

Ultimate spread

1-1.5 metres

Time to ultimate height

5-10 years


Preferred common name

Syrian hibiscus 'Diana'

Family

Malvaceae


Hibiscus can be deciduous or evergreen shrubs, trees, annuals or perennials, with simple or palmately lobed leaves and large, funnel-shaped flowers over a long flowering season

'Diana' is a bushy deciduous shrub to 2m or more, with lobed leaves and single, pure white flowers to 12cm wide in late summer and early autumn

Other common names

  • rose of Sharon 'Diana'

How to grow

Sunlight

  • Full sun

Aspect

  • South-facing or West-facing
  • Sheltered

Cultivation

Grow in a moist but well-drained soil in a sheltered position in full sun

Soil

  • Well-drained or Moist but well-drained
  • Alkaline or Neutral
  • Sand, Clay, Chalk or Loam

Propagation

Propagate by semi-hardwood cuttings

Suggested planting locations and garden types

City/Courtyard Gardens, Coastal, Cottage/Informal Garden, Flower borders and beds or Wall-side Borders


How to care

Pruning

Pruning group 1

Pests

Aphids, mealybugs and thrips may be a problem

Diseases

Powdery mildews may be a problem