Petunia Designer Inksplash (Designer Series)

RHS Plant Profile
petunia [Designer Inksplash]

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petunia [Designer Inksplash] RHS
petunia [Designer Inksplash] RHS / Joanna Kossak
Annual Biennial Bedding

A bushy plant to 35cm tall with semi-trailing or spreading stems and is grown as an annual. Flowers borne in profusion from early summer into autumn are a vibrant purple splashed and edged with white

Position

Full sun

Soil Types

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

Loam Sand
Moisture
Well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun
Aspect
West–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
Solanaceae
Native to GB/Ireland
No
Foliage
Deciduous
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

Overwinter young plants under glass in frost free conditions and plant out after frosts have passed. Grow in light, well-drained soil in full sun, with shelter from drying winds

Propagation

Propagate by softwood cuttings in summer

Suggested planting locations and garden types

  • City and courtyard gardens
  • Coastal
  • Cottage and informal garden
  • Gravel garden
  • Patio and container plants
  • Flower borders and beds
  • Banks and slopes
  • Garden edging

Pruning

Deadhead regularly to prolong flowering

Pests

Aphids and slugs may be a problem

Diseases

May be susceptible to fungal foot rot and a virus