Prostanthera cuneata

RHS Plant Profile
alpine mint bush
Award of Garden MeritPlants for pollinators
Shrubs

A small evergreen shrub with tiny, glossy, rounded leaves which are highly aromatic, and white or pale lilac flowers 12mm width, with dark purple spots, in summer

Position

Full sun

Soil Types

Loam, Sand

Max Height

0.5-1 metres

Max Spread

0.5-1 metres

Size

Time to Maturity
5–10 years
Max Spread
0.5-1 metres
Max Height
0.5-1 metres

Growing Conditions

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

Position

Full sun
Aspect
South–facing or East–facing
Exposure
Sheltered
Hardiness
H4

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
Correct
Plant Range
Australia (Tasmania)

How to Grow

Cultivation

Grow under glass in a peat-free, loam-based compost in full light. Grow outdoors in moist but well-drained soil in full sun in a sheltered position

Propagation

Propagate by seed or semi-ripe cuttings

Suggested planting locations and garden types

  • City and courtyard gardens
  • Coastal
  • Gravel garden
  • Mediterranean climate plants
  • Cottage and informal garden
  • Patio and container plants
  • Wildlife gardens
  • Low Maintenance
  • Flower borders and beds
  • Wall side borders

Pruning

Pruning group 8; Prune after flowering; hard pruning may be detrimental

Pests

May be susceptible to glasshouse red spider mite and glasshouse whitefly if grown in a conservatory or greenhouse

Diseases

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