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Hibiscus syriacus 'William R. Smith'

rose of Sharon 'William R. Smith'

A robust deciduous shrub with dark green, three-lobed leaves and single white flowers to 10cm across in late summer and autumn

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Size
Ultimate height
1.5–2.5 metres
Time to ultimate height
10–20 years
Ultimate spread
1–1.5 metres
Growing conditions
Chalk
Clay
Loam
Sand
Moisture
Moist but well–drained, Well–drained
pH
Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer White Green
Autumn White Green
Winter
Position
  • Full sun
Aspect

East–facing or South–facing

Exposure
Sheltered
Hardiness
H5
Botanical details
Family
Malvaceae
Native to GB / Ireland
No
Foliage
Deciduous
Habit
Bushy
Genus

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

Name status

Accepted

How to grow

Cultivation

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

Propagation

Propagate by semi-hardwood cuttings

Suggested planting locations and garden types
  • City and courtyard gardens
  • Coastal
  • Cottage and informal garden
  • Patio and container plants
  • Flower borders and beds
  • Hedging and screens
  • Wall side borders
Pruning

Pruning group 1

Pests

May be susceptible to aphids, scale insects, mealybugs and glasshouse whitefly when grown under glass

Diseases

May be susceptible to honey fungus (rarely) and powdery mildews

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