Prostanthera 'Ballerina'

RHS Plant Profile
mint bush 'Poorinda Ballerina'

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mint bush 'Poorinda Ballerina' RHS / Joanna Kossak
mint bush 'Poorinda Ballerina' RHS / Joanna Kossak

Synonyms

Prostanthera 'Ballerina'

Shrubs
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A bushy, evergreen shrub to 1.5m tall and wide with narrow, deep green, mint-scented leaves to 5cm long. White to pale lilac, trumpet-shaped flowers with yellow throats are borne in profusion from late spring into early summer

Position

Full sun, Partial shade

Soil Types

Loam, Sand

Max Height

1-1.5 metres

Max Spread

1-1.5 metres

Size

Time to Maturity
5–10 years
Max Spread
1-1.5 metres
Max Height
1-1.5 metres

Growing Conditions

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

Position

Full sun Partial shade
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)
H3

Colour & Scent

Fragrance Foliage
Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Lamiaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Bushy
Genus
Prostanthera are bushy evergreen shrubs with small, dark green, highly aromatic leaves and terminal panicles or racemes of cup-shaped white blue or purple flowers in late spring or early summer
Name Status
Synonym

How to Grow

Cultivation

Grow under glass in a peat-free, loam-based compost in full light. In frost-free areas grow outdoors in moist but well-drained soil in full sun

Propagation

Propagate by semi-hardwood cuttings

Suggested planting locations and garden types

  • City and courtyard gardens
  • Cottage and informal garden
  • Mediterranean climate plants
  • Coastal
  • Patio and container plants
  • Hedging and screens
  • Wall side borders

Pruning

pruning group 8 after flowering

Pests

May be susceptible to glasshouse red spider mite and glasshouse whitefly

Diseases

May be susceptible to honey fungus in gardens where it is present but insufficient data to determine degree of susceptibility