Callianthe × milleri 'Ventnor Gold'

RHS Plant Profile
Miller abutilon 'Ventnor Gold'

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Synonyms

Abutilon × milleri hort. 'Ventnor Gold' [1]

Shrubs Conservatory Greenhouse
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An evergreen shrub, to around 2m high, with arching stems and deep green leaves with narrowly pointed lobes. Pendent, bell-shaped golden yellow flowers are produced along the young stems from early summer to early autumn

Position

Full sun

Soil Types

Chalk, Loam, Sand

Max Height

1.5-2.5 metres

Max Spread

1.5-2.5 metres

Size

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

Growing Conditions

Chalk Loam Sand
Moisture
Well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun
Aspect
South–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)
H3

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Malvaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Spreading branched
Genus
A genus of tender, subtropical, evergreen, woody flowering shrubs with a lax habit and pendulous, bell-shaped red, orange or yellow chinese lantern-like flowers
Name Status
Unresolved

How to Grow

Cultivation

Thrives in moderately fertile, well-drained soil in a sunny, sheltered position. Ideal for a protected warm wall or large conservatory. May need winter protection

Propagation

Propagate by softwood and semi-ripe cuttings at any time; hardwood cuttings in autumn

Suggested planting locations and garden types

  • City and courtyard gardens
  • Coastal
  • Cottage and informal garden
  • Sub-tropical
  • Climber and wall shrubs
  • Conservatory and greenhouse
  • Wall side borders

Pruning

pruning group 9; or pruning group 13 for wall-trained specimens

Pests

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

Diseases

May be susceptible to honey fungus (rarely) or a virus