Calceolaria integrifolia 'Sunshine'

RHS Plant Profile
slipperwort 'Sunshine'

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slipperwort 'Sunshine' John Fielding

Synonyms

Calceolaria rugosa 'Sunshine'

Bedding Herbaceous Perennial

An erect, bushy sub-shrub to 25cm, usually grown as an annual, with narrow grey-green leaves and cymes of deep yellow flowers 2.5cm in length in mid-summer

Position

Full sun, Partial shade

Soil Types

Clay, Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
1–2 years
Max Spread
0.1-0.5 metres
Max Height
0.1-0.5 metres

Growing Conditions

Clay Loam Sand
Moisture
Moist but well–drained or Poorly–drained
pH
Acid

Position

Full sun Partial shade
Aspect
West–facing or East–facing or 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)
H2

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Calceolariaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Bushy
Genus
Calceolaria can be annuals, biennials, perennials or shrubs, with opposite leaves or basal rosettes, and solitary or clustered, slipper-like yellow, red or purple flowers
Name Status
Accepted

How to Grow

Cultivation

Grow as summer bedding or container plant, flowers best in cool, moist conditions, likes acid soil or compost in sun or partial shade

Propagation

Propagate by seed or softwood cuttings taken in late summer

Suggested planting locations and garden types

  • City and courtyard gardens
  • Cottage and informal garden
  • Patio and container plants
  • Flower borders and beds

Pruning

Deadhead regularly

Pests

May be damaged by slugs and snails

Diseases

May suffer from grey moulds