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Prostanthera cuneata
  • RHS AGM

alpine mint bush

P. cuneata is 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

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Size
Ultimate height
0.5–1 metres
Time to ultimate height
10–20 years
Ultimate spread
0.5–1 metres
Growing conditions
Chalk
Clay
Loam
Sand
Moisture
Moist but well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Purple White Green
Autumn Green
Winter Green
Position
  • Full sun
Aspect

South–facing or East–facing

Exposure
Sheltered
Hardiness
H4
Botanical details
Family
Lamiaceae
Native to the UK
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 loam-based compost in full light. Grow outdoors in moist but well-drained soil in full sun. Prune after flowering; hard pruning may be detrimental

Propagation

Propagate by seed or semi-hardwood 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
  • Low Maintenance
  • Flower borders and beds
  • Wall side borders
Pruning

Pruning group 8

Pests

May be attacked by glasshouse red spider mite

Diseases

Generally disease free

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