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Rosmarinus officinalis 'Sissinghurst Blue' AGM

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© RHS 1999

Characteristics

Plant type

Shrub

Habit

Bushy

Fragrance

Leaf

Resilience

Hardiness

H4 (hardy - average winter)

Colour

Flower

Dark Blue in Spring and Summer

Foliage

Green in Autumn, Spring, Summer and Winter

Size

Ultimate height

1-1.5 metres

Ultimate spread

0.5-1 metres

Time to ultimate height

5-10 years


Preferred common name

rosemary 'Sissinghurst Blue'

Family

Lamiaceae


Rosmarinus are evergreen shrubs with narrow, aromatic leaves and 2-lipped blue flowers borne in small clusters in the leaf axils

'Sissinghurst Blue' is an upright, medium-sized evergreen shrub with aromatic, linear leaves and abundant, two-lipped, rich blue flowers

How to grow

Sunlight

  • Full sun

Aspect

  • South-facing, West-facing or East-facing
  • Exposed or Sheltered

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

Soil

  • Well-drained or Moist but well-drained
  • Acid, Alkaline or Neutral
  • Sand, Clay, Chalk or Loam

Propagation

Propagate by semi-hardwood cuttings

Suggested planting locations and garden types

Cottage/Informal Garden, Flower borders and beds, Hedging/Screens, Low Maintenance, Mediterranean Climate Plants, Patio/Container Plants or Wall-side Borders


How to care

Pruning

Pruning group 9

Pests

Generally pest free

Diseases

Generally disease free