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HIBISCUS syriacus 'Diana'

Commonly known as Rose of Sharon, Tree hollyhock

Large pure white flowers with crimped petals
Further Reading....

  • Deciduous - oval to diamond-shaped, 3-lobed, coarsely-toothed, dark green leaves to 10cm (4in) long
  • White
  • Height - 3m (10ft)
  • Spread - 2m (6½ft)
  • Tall Shrub - erect shrub. Flowers with wavy-margined petals are produced from the leaf axils
  • Hardy - cold winter - Hardy in most places throughout the UK even in severe winters. May not withstand open/exposed sites or central/northern locations. Plant can withstand temperatures down to -15°C (5°F)
  • Full sun
  • Additional Features - Good to know - - can be kept compact by spring pruning as flowers form on current year's growth
  • Pests & Diseases - aphids, powdery mildew
  • Place of origin - China to India. Developed at US National Arboretum, Washington.
  • Flower Shape - Single - Row of petals round conspicuous stamens - no more than 8 petals
  • Trumpet - to 12cm (4¾in) across
  • Hardiness - Fully hardy -
  • Pruning group - Pruning group 1
    Suitable for: Deciduous and evergreen trees, and some deciduous shrubs.
    Pruning: Minimal pruning required. Prune wayward or crossing branches to maintain a healthy framework.
    When: When dormant in the late winter/early spring. Some in the summer/autumn to prevent bleeding of sap.

    RHS group 1
  • Seasonal Interest - Autumn -
  • Summer
  • Soil Conditions - Fertile moist well-drained soil - - humus-rich
  • Neutral to alkaline soil
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Hibiscus syriacus - Growing Guide
3m (10ft)
Tall Shrub - guide for size not form Average Person
  2m (6½ft)
 

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