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Herbaceous Perennial

Salvia pratensis 'Indigo'
  • RHS AGM
  • RHS Plants for pollinators

clary 'Indigo'

'Indigo' is a lax herbaceous perennial with ovate leaves to 20cm in length, and erect stems bearing long terminal spikes of whorled, violet flowers with brownish-red calyces, in early summer

Synonyms
Salvia haematodes 'Indigo'
Salvia × sylvestris 'Indigo'

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Size
Ultimate height
0.5–1 metres
Time to ultimate height
2–5 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Chalk
Loam
Sand
Moisture
Well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Purple Green
Autumn Green
Winter
Position
  • Full sun
Aspect

East–facing or South–facing

Exposure
Exposed or Sheltered
Hardiness
H7
Botanical details
Family
Lamiaceae
Native to GB / Ireland
No
Foliage
Deciduous
Habit
Clump forming
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 light, moderately fertile, humus-rich, moist but well-drained soil. Best in full sun but can tolerate light partial shade

Propagation

Propagate by seed in pots in a cold frame in spring

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

Cut back flower spikes as they fade to prolong flowering

Pests

Generally pest-free

Diseases

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

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