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Calceolaria crenatiflora

scalloped-flower slipper flower

A species of tender, deciduous, herbaceous perennial, grown as a half-hardy annual in milder climates, with dark green wrinkled and veined foliage, and unusual, inflated yellow flowers freckled with orange-brown. These appear in clusters above the foliage from spring through to the autumn. Generally best suited to rock gardens in milder climates or in a heated greenhouse in cooler conditions

Synonyms
Calceolaria polyrrhiza hort.
Calceolaria pendula
Size
Ultimate height
0.1–0.5 metres
Time to ultimate height
1–2 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Clay
Loam
Sand
Moisture
Moist but well–drained, Well–drained
pH
Acid, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Yellow Orange Brown Green
Autumn Yellow Orange Brown Green
Winter
Position
  • Full sun
  • Partial shade
Aspect

East–facing or South–facing or West–facing

Exposure
Sheltered
Hardiness
H1C
Botanical details
Family
Calceolariaceae
Native to GB / Ireland
No
Foliage
Deciduous
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

Correct

Plant range
Chile

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How to grow

Cultivation

Outdoors, grow in light, moderately fertile, acidic soil in sun or partial shade. Flowering is best in cool, moist conditions. Water freely and apply a balanced liquid fertiliser every 2 weeks. To overwinter plants, lift them before the first frosts and put them in pots in a heated greenhouse

Propagation

Propagate by seed sown under glass in early spring

Suggested planting locations and garden types
  • City and courtyard gardens
  • Cottage and informal garden
  • Gravel garden
  • hanging basket
  • Houseplants
  • Patio and container plants
  • Rock garden
  • Bedding
  • Conservatory and greenhouse
  • Flower borders and beds
  • Garden edging
Pruning

Deadhead to prolong flowering

Pests

May be susceptible to slugs, snails and aphids

Diseases

May be susceptible to grey moulds

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