Silene uniflora

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sea campion

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Other common names

seaside catchfly, sea pink

Synonyms

Silene vulgaris subsp. maritima
Silene alpina
Silene maritima

Plants for pollinators
Alpine Rockery
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A low-growing, mat-forming, semi-evergreen perennial. The leaves are lance-shaped, grey-green and slightly fleshy. White flowers with deeply-cut petals are borne on branched stems throughout summer

Position

Full sun

Soil Types

Chalk, Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
2–5 years
Max Spread
0.1-0.5 metres
Max Height
0.1-0.5 metres

Growing Conditions

Chalk Loam Sand
Moisture
Moist but well–drained or Well–drained
pH
Alkaline or Neutral

Position

Full sun
Aspect
South–facing
Exposure
Exposed or Sheltered
Hardiness

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

  • H1A: under glass all year (>15C)
  • H1B: can be grown outside in the summer (10 - 15)
  • H1C: can be grown outside in the summer (5 - 10)
  • H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
  • H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
  • H4: hardy through most of the UK (-10 to -5)
  • H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
  • H6: hardy in all of UK and northern Europe (-20 to -15)
  • H7: hardy in the severest European continental climates (< -20)
H7

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Caryophyllaceae
Native to GB/Ireland
Yes
Foliage
Semi evergreen
Habit
Matforming
Genus
Silene can be annuals, biennials or herbaceous or evergreen perennials, with opposite, untoothed leaves and solitary or clustered flowers with 5, usually notched petals
Name Status
Correct
Plant Range
Macaronesia, Europe

How to Grow

Cultivation

Grow in a well-drained soil in a sunny position. Ideal for rock gardens, scree beds, gravel gardens, walls and alpine troughs

Propagation

Divide congested mats in spring

Suggested planting locations and garden types

  • Coastal
  • Cottage and informal garden
  • Gravel garden
  • Rock garden
  • Wildlife gardens
  • Banks and slopes
  • Flower borders and beds
  • Garden edging

Pruning

Deadhead after flowering

Pests

Generally pest-free

Diseases

Generally disease-free