• AGM plants

    AGM plants have been through a rigourous trial and assessment programme. They are:

    • Excellent for ordinary use in appropriate conditions
    • Available to buy
    • Of good constitution
    • Essentially stable in form & colour
    • Reasonably resistant to pests & diseases

Liquidambar styraciflua

Sweet gum

Sweet gum

© � RHS

  • Other common names Sweet gum
    American red gum

    American sweet gum
    Bilsted
    Copalm balsam
    Red gum
    Satin walnut

    see more
  • 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

  • Family Hamamelidaceae / Altingiaceae

  • Species L. styraciflua is a deciduous tree to 20m tall, broadly conical in outline, with rather glossy, maple-like, 5 to 7-lobed leaves which turn to shades of orange, crimson and purple in autumn

  • Plant range Eastern USA

Characteristics

  • Foliage Deciduous

  • Habit Bushy

Colour

Sunlight

  • Full Sun

  • Partial Shade

  • Aspect South-facing or North-facing or West-facing or East-facing

  • Exposure Sheltered or Exposed

Soil

  • Chalk

    Loam

  • Chalk

    Clay

  • Chalk

    Sand

  • MoistureWell-drained, Moist but well-drained

  • SoilLoam, Clay, Sand

  • pHAcid, Neutral

Size

  • Ultimate height

    Higher than 12 metres

  • Ultimate spread

    wider than 8 metres

  • Time to ultimate height

    more than 50 years

How to grow

Cultivation Grow in lime-free soil in sun or partial shade. Suitable for woodlands

Propagation Propagate by semi-hardwood cuttings

Suggested planting locations and garden types Flower borders and beds

How to care

Pruning Pruning group 1

Pests Generally pest free

Diseases Generally disease free

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