Sinningia 'Empress Red'

RHS Plant Profile
sinningia 'Empress Red'

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sinningia 'Empress Red' RHS 1998
Conservatory Greenhouse Annual Biennial Houseplants

A perennial grown as a biennial, with hairy ovate leaves and bell-shaped white flowers to 9cm across, flushed with pink, and shading to deep red-purple in throat

Position

Partial shade

Soil Types

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

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

Position

Partial shade
Aspect
South–facing or East–facing or West–facing
Exposure
Exposed or 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)
H1A

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Gesneriaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Clump forming
Genus
Sinningia can be deciduous, tuberous perennials or small, deciduous or evergreen shrubs, with simple, fleshy leaves and large, bell-shaped, to tubular flowers in summer
Name Status
Accepted

How to Grow

Cultivation

Grow in moist but well-drained, humus-rich, neutral to acid soil in partial shade

Propagation

Propagate by seed or tubers

Suggested planting locations and garden types

  • Patio and container plants

Pruning

Cut back after flowering

Pests

May be susceptible to leafhoppers and thrips

Diseases

Generally disease-free