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Hibiscus syriacus 'Red Heart' AGM

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© RHS 1997

Characteristics

Plant type

Shrub

Habit

Bushy

Resilience

Hardiness

H5 (hardy - cold winter)

Colour

Flower

White and Dark Red in Autumn and Summer

Foliage

Dark Green in Autumn, Spring and Summer

Size

Ultimate height

1.5-2.5 metres

Ultimate spread

1.5-2.5 metres

Time to ultimate height

10-20 years


Preferred common name

rose mallow 'Red Heart'

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

'Red Heart' is a medium-sized deciduous shrub of upright habit, with lobed dark green leaves. Flowers single, to 10cm in width, pure white with conspicuous deep red centres, from late summer

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
  • Chalk, Clay, Sand or Loam

Propagation

Propagate by semi-hardwood cuttings

Suggested planting locations and garden types

City/Courtyard Gardens or Wall-side Borders


How to care

Pruning

Pruning group 1

Pests

Generally pest free

Diseases

Powdery mildews may be a problem