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Herbaceous Perennial

Salvia uliginosa
  • RHS AGM
  • RHS Plants for pollinators

bog sage

A robust, moisture-loving, herbaceous perennial to 2m, with slightly sticky lance-shaped leaves and branched stems bearing short spikes of 2-lipped, clear blue flowers 2cm in length from late summer

Synonyms
Salvia uliginosa 'African Skies'
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Size
Ultimate height
1–1.5 metres
Time to ultimate height
2–5 years
Ultimate spread
0.5–1 metres
Growing conditions
Chalk
Loam
Sand
Moisture
Moist but well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Blue Green
Autumn Blue Green
Winter
Position
  • Full sun
Aspect

South–facing

Exposure
Sheltered
Hardiness
H4
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

Correct

Plant range
Brazil to Argentina

How to grow

Cultivation

Grow in light, moderately fertile, humus-rich, moist soil in full sun; usually needs support

Propagation

Propagate by basal cuttings or softwood cuttings in spring or early summer or semi-hardwood cuttings in late summer or autumn with bottom heat

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

Cut back flower spikes to proling flowering

Pests

May be susceptible to sage leafhopper, slugs, snails and rosemary beetle

Diseases

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

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