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Liquidambar styraciflua 'Slender Silhouette'
  • RHS AGM

sweet gum 'Slender Silhouette'

A broadly conical specimen tree, with dense, alternate, maple-like leaves colouring though orange to brilliant purplish red in autumn. Flowers are insignificant and the fruits are decorative round, prickly, woody capsules.

Synonyms
Liquidambar styraciflua 'Shadow Columnar Form'
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Size
Ultimate height
Higher than 12 metres
Time to ultimate height
10–20 years
Ultimate spread
2.5–4 metres
Growing conditions
Clay
Loam
Sand
Moisture
Moist but well–drained, Well–drained
pH
Acid, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Green
Autumn Orange Purple Red Yellow
Winter
Position
  • Full sun
  • Partial shade
Aspect

South–facing or East–facing or West–facing

Exposure
Exposed or Sheltered
Hardiness
H6
Botanical details
Family
Hamamelidaceae
Native to the UK
No
Foliage
Deciduous
Habit
Columnar upright
Genus

Liquidambar are deciduous trees grown for their alternate, maple-like leaves which take on brilliant and long-lasting autumn colour; flowers and fruits are inconspicuous

Name status

Accepted

How to grow

Cultivation

Thrives in lime-free, moist but well-drained soil in sun or partial shade. Grow in woodland or as a specimen tree. Full sun brings out best autumn colour.

Propagation

Propagate by semi-hardwood cuttings

Suggested planting locations and garden types
  • Architectural
  • City and courtyard gardens
  • Low Maintenance
  • Flower borders and beds
Pruning

Pruning group 1

Pests

Generally pest-free

Diseases

May be susceptible to honey fungus

Get involved

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