Carpenteria californica

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Shrubs
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A medium-sized, bushy evergreen shrub, often spreading in growth. Leaves narrowly elliptic, shiny green above. Flowers to 7cm in width, pure white with conspicuous yellow stamens

Position

Full sun

Soil Types

Chalk, Clay, Loam, Sand

Max Height

1.5-2.5 metres

Max Spread

1.5-2.5 metres

Size

Time to Maturity
10–20 years
Max Spread
1.5-2.5 metres
Max Height
1.5-2.5 metres

Growing Conditions

Chalk Clay Loam Sand
Moisture
Moist but well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun
Aspect
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)
H4

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Hydrangeaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Bushy
Genus
Carpenteria are evergreen shrubs with simple, leathery, dark green leaves and large, bowl-shaped white flowers with prominent yellow stamens
Name Status
Correct
Plant Range
USA (California)

How to Grow

Cultivation

Grow in moist but well-drained soil in a sunny, sheltered position

Propagation

Propagate by seed or semi-hardwood cuttings

Suggested planting locations and garden types

  • City and courtyard gardens
  • Low Maintenance
  • Wall side borders

Pruning

Pruning group 8

Pests

May be susceptible to brown scale

Diseases

May be susceptible to honey fungus (rarely) and a leaf spot