Prostanthera 'Mint Royale'
Australian mint bush 'Mint Royale'
A compact evergreen shrub with small, oval-shaped, aromatic, dark green foliage and massed of violet-purple flowers which appear from May to June. Suitable for borders or in a large pot or container
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Size
Ultimate height
1–1.5 metresTime to ultimate height
10–20 yearsUltimate spread
1–1.5 metresGrowing conditions
Moisture
Moist but well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Purple | Green | ||
|---|---|---|---|---|
| Summer | Purple | Green | ||
| Autumn | Green | |||
| Winter | Green |
Position
- Full sun
Aspect
South–facing or West–facing
Exposure
Sheltered Hardiness
H3Botanical 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
Unresolved
How to grow
Cultivation
Grow under glass in a peat-free, loam-based compost in full light. Grow outdoors only in a frost-free environment with 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
- Cottage and informal garden
- Mediterranean climate plants
- Patio and container plants
- Flower borders and beds
- 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
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