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Hibiscus syriacus 'Gandini Santiago'PBR

rose of Sharon [Purple Pillar]

This hibiscus is beautiful but what makes it really stand out is its columnar habit. It can reach between 3 and 4 metres high yet its spread is usually less than a metre, making this an ideal plant for the back of a border or a small space. The full height of the plant is covered with striking mauve pink flowers, with a deep red starburst at its centre, from late summer to autumn. Definitely one that could be fitted in anywhere in the garden!

Synonyms
Hibiscus syriacus Purple Pillar
Hibiscus syriacus Flower Tower Purple
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Size
Ultimate height
2.5–4 metres
Time to ultimate height
5–10 years
Ultimate spread
1–1.5 metres
Growing conditions
Chalk
Clay
Loam
Sand
Moisture
Moist but well–drained, Well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Pink Purple Red Green
Autumn Pink Purple Red Green
Winter
Position
  • Full sun
Aspect

South–facing or West–facing or East–facing

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

Grows best in neutral to slightly acidic or slightly alkaline, humus-rich, moist but well-drained soil. Plant in a warm sheltered position in full sun to encourage flowering. Can also be grown in pots. Feed in spring, with a slow-release, high potash formula, such as rose food, and mulch in autumn to help maintain soil moisture levels and suppress weeds

Propagation

Propagate by softwood cuttings in late spring, by semi-ripe cuttings in summer, or by layering in spring or autumn

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

Very little pruning required, just prune away any broken or dead branches after flowering - 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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