Liquidambar styraciflua 'Rotundiloba'

RHS Plant Profile

sweet gum 'Rotundiloba'

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Synonyms

Liquidambar styraciflua 'Rotundifolia'
Liquidambar styraciflua 'Obtusiloba'

Trees

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A deciduous tree with a conical habit, growing to about 20m tall. The deeply divided rich green leaves have distinctive, usually 3 rounded lobes that turn deep red, orange, yellow and purple in autumn. Insignificant flowers in late spring are followed by spiky fruit capsules in autumn. Branches develop a corky, winged appearance

Position

Full sun, Partial shade

Soil Types

Clay, Loam, Sand

Max Height

Higher than 12 metres

Max Spread

wider than 8 metres

Size

Time to Maturity: 10–20 years
Max Spread: wider than 8 metres
Max Height: Higher than 12 metres

Growing Conditions

Clay Loam Sand

Moisture: Moist but well–drained
pH: Acid or Neutral

Position

Full sun Partial shade

Aspect: East–facing or South–facing or West–facing
Exposure: Exposed or Sheltered
Hardiness

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

H1A: under glass all year (>15C)
H1B: can be grown outside in the summer (10 - 15)
H1C: can be grown outside in the summer (5 - 10)
H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
H4: hardy through most of the UK (-10 to -5)
H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
H6: hardy in all of UK and northern Europe (-20 to -15)
H7: hardy in the severest European continental climates (< -20): H6

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Hamamelidaceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Bushy
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

Grow in moist but well-drained, neutral to acid, moderately fertile soil, in full sun or partial shade. Suitable for woodlands or as a specimen tree. Full sun brings out the best autumn colour - see tree cultivation

Propagation

Propagate by semi-ripe cuttings in summer

Suggested planting locations and garden types

Cottage and informal garden

Pruning

Pruning group 1

Pests

Generally pest-free

Diseases

May be susceptible to honey fungus