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Herbs - CulinaryShrubs

Salvia rosmarinus 'Blue Lagoon' (Ro)
  • RHS Plants for pollinators

A semi-prostrate, evergreen shrub with arching stems bearing dark green, short, needle-shaped and very aromatic leaves, and small tubular, bright to dark blue flowers, from mid-spring to summer

Synonyms
Rosmarinus officinalis 'Blue Lagoon'
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Size
Ultimate height
0.1–0.5 metres
Time to ultimate height
5–10 years
Ultimate spread
0.5–1 metres
Growing conditions
Chalk
Loam
Sand
Moisture
Well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Blue Green
Summer Blue Green
Autumn Green
Winter Green
Position
  • Full sun
Aspect

South–facing or West–facing

Exposure
Sheltered
Hardiness
H4
Botanical details
Family
Lamiaceae
Native to the UK
No
Foliage
Evergreen
Habit
Bushy
Potentially harmful
Skin allergen. Wear gloves and other protective equipment when handling
Genus

Salvia can be annuals, biennials, herbaceous or evergreen perennials, or shrubs. They have paired, simple or pinnately lobed, often aromatic leaves and 2-lipped flowers in whorls, forming simple or branched spikes or racemes

Name status

Accepted

How to grow

Cultivation

Grow in poor to moderately fertile, well-drained soil in sun, see rosmary cultivation for further advice

Propagation

Propagate by semi-ripe cuttings in summer

Suggested planting locations and garden types
  • City and courtyard gardens
  • Cottage and informal garden
  • Mediterranean climate plants
  • Wildlife gardens
  • Coastal
  • Gravel garden
  • Low Maintenance
  • Flower borders and beds
Pruning

Pruning group 9

Pests

May be susceptible to rosemary beetle, cuckoo spit, sage leafhopper, tortrix moth and scale insects

Diseases

May be susceptible to honey fungus (rarely), powdery mildews, verticillium wilt and foot and root rots

Get involved

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