Radermachera sinica

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Asian bell tree

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A bushy, evergreen tree, with glossy, mid-green foliage divided into many leaflets. Reaching 30m in its natural environment it is usually grown as a houseplant and unlikely to exceeed 2m

Position

Full sun, Partial shade

Soil Types

Loam

Max Height

1.5-2.5 metres

Max Spread

1-1.5 metres

Size

Time to Maturity
5–10 years
Max Spread
1-1.5 metres
Max Height
1.5-2.5 metres

Growing Conditions

Loam
Moisture
Moist but well–drained
pH
Neutral

Position

Full sun Partial shade
Aspect
East–facing or South–facing or West–facing
Exposure
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)
H1B

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Bignoniaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Bushy
Genus
Radermachera is genus of evergreen trees native to southern China and Taiwan, reaching heights of up to 30m. Leaves are bipinnate with numerous glossy green leaflets. Flowers are trumpet-shaped. Dwarf variations are available and can be used as an indoor or patio plant.
Name Status
Correct

How to Grow

Cultivation

Grow in peat-free multipurpose compost, with additional sand or perlite to improve drainage, with bright, indirect light, in a warm environment. Avoid moving plants, or making other environmental changes, which can lead to leaf drop

Propagation

Propagate by semi-ripe cuttings

Suggested planting locations and garden types

  • Houseplants
  • Conservatory and greenhouse

Pruning

Pinch out shoot tips of young plants to encourage branching; older plants may be cut back to keep within bounds

Pests

May be susceptible to aphids, mealybugs, scale insects and glasshouse red spider mite

Diseases

May be susceptible to root rot if kept too moist