HIBISCUS syriacus 'Blue Bird'

Commonly known as Rose of Sharon, Tree hollyhock

Very large single blue flowers with a dark centre
Further Reading....
  • Deciduous
    Oval to diamond-shaped, 3-lobed, coarsely-toothed, dark green leaves to 10cm (4in) long
  • Blue
  • Height
    3m (10ft)
  • Spread
    2m (6½ft)
  • Tall Shrub
    Erect shrub. Flowers 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

HIBISCUS syriacus 'Blue Bird'

 
  • Additional Features
    Good to know
    Syn. H. 'Oiseau Bleu'. 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.
  • Flower Shape
    Single
    Row of petals round conspicuous stamens - no more than 8 petals
    Trumpet
    To 8cm (3in) 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
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Hibiscus syriacus - Growing Guide
3m (10ft)
Tall Shrub - guide for size not form Average Person
  2m (6½ft)
 

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