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Herbs - CulinaryShrubs

Salvia rosmarinus (Angustifolia Group) 'Benenden Blue' (Ro)
  • RHS Plants for pollinators

rosemary 'Benenden Blue'

A bushy aromatic evergreen shrub with narrow, dark green leaves and bright blue, two-lipped flowers in late spring and early summer, sometimes also in autumn

Synonyms
Rosmarinus officinalis 'Benenden Blue'
Rosmarinus officinalis 'Collingwood Ingram'
see moreRosmarinus officinalis var. angustissimus 'Benenden Blue'
Salvia rosmarinus 'Collingwood Ingram'
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Size
Ultimate height
0.5–1 metres
Time to ultimate height
2–5 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 Blue Green
Winter Green
Position
  • Full sun
Aspect

West–facing or East–facing or South–facing

Exposure
Exposed or Sheltered
Hardiness
H4
Botanical details
Family
Lamiaceae
Native to GB / Ireland
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

Easy to grow aromatic, evergreen shrub. Prefers poor, well-drained soil and may be used as a formal or informal low hedge which should be trimmed after flowering. See rosemary cultivation for further advice

Propagation

Propagate by semi-hardwood cuttings

Suggested planting locations and garden types
  • Coastal
  • Cottage and informal garden
  • Rock garden
  • City and courtyard gardens
  • Wildlife gardens
  • Wall side borders
  • 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

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