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Prostanthera rotundifolia 'Rosea'
  • RHS AGM

pink round-leaf mintbush

'Rosea' is a bushy evergreen shrub to 2m or more, with small, ovate, strongly mint-scented leaves and profusely-borne 2-lipped, pale rose pink flowers with a darker eye, through a long flowering season in late spring and early summer

Synonyms
Prostanthera rotundifolia 'Chelsea Pink'
Prostanthera 'Chelsea Pink'
see moreProstanthera rotundifolia 'Chelsea Girl'

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Size
Ultimate height
1.5–2.5 metres
Time to ultimate height
5–10 years
Ultimate spread
1–1.5 metres
Growing conditions
Chalk
Loam
Sand
Moisture
Moist but well–drained, Well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Pink Grey Silver Green
Summer Pink Grey Silver Green
Autumn Grey Silver Green
Winter Grey Silver Green
Position
  • Full sun
Aspect

South–facing or West–facing

Exposure
Sheltered
Drought resistance
Yes
Hardiness
H2
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

Accepted

How to grow

Cultivation

Grow under glass in a loam-based potting compost (JI No.2) in full light, water sparingly in winter and place outdoors during the summer months. Grow outdoors only in a frost-free environment with moist but well-drained soil in full sun

Propagation

Propagate by seed or semi-hardwood cuttings

Suggested planting locations and garden types
  • Patio and container plants
  • Mediterranean climate plants
  • City and courtyard gardens
  • Coastal
  • Cottage and informal garden
  • Flower borders and beds
  • Wall side borders
Pruning

Pruning group 8 after flowering; resents hard pruning

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

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