Petunia Surfinia Amethyst ('Keiametsum'PBR) (Surfinia Series)

RHS Plant Profile
petunia [Surfinia Amethyst]

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Synonyms

Petunia 'Keiametsum'PBR

Bedding

A bushy, vigorous, semi-trailing, floriferous tender perennial usually grown as seasonal bedding or a patio container plant. It has oval shaped, sticky and hairy mid-green leaves and produces abundant, velvety, Gramophone-trumpet-shaped, mid blue-purple flowers. Flowers from late spring to autumn.

Position

Full sun

Soil Types

Clay, Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
1 year
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 Well–drained
pH
Acid or Neutral

Position

Full sun
Aspect
East–facing or South–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)
H2

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Solanaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Trailing
Genus
Petunia can be annuals or perennials, with simple leaves and large, solitary, trumpet-shaped flowers in the upper leaf axils from late spring to autumn
Name Status
Trade

How to Grow

Cultivation

Grow in light, fertile, well-drained soil in full sun, with shelter from drying winds. Plant out after frosts have passed

Propagation

Propagate by seed

Suggested planting locations and garden types

  • City and courtyard gardens
  • Cottage and informal garden
  • Sub-tropical
  • Patio and container plants
  • Mediterranean climate plants
  • Hanging Basket
  • Bedding
  • Flower borders and beds

Pruning

Deadhead regularly

Pests

May be susceptible to aphids and slugs

Diseases

May be susceptible to grey moulds, foot rot and a virus