Silene zawadskii

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Zawadski's campion

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Zawadski's campion RHS

Synonyms

Melandrium zawadskii
Saponaria zawadskii

Alpine Rockery
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A dwarf perennial producing a mat of evergreen leaves, with pure white flowers, up to 2.5cm across, with an inflated pale green calyx, on 25cm stems in 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
Well–drained
pH
Alkaline or Neutral

Position

Full sun
Aspect
West–facing or 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)
H6

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Caryophyllaceae
Native to GB/Ireland
No
Foliage
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
E Carpathians Mountains

How to Grow

Cultivation

Grow in moderately fertile, well-drained, neutral to alkaline soil in full sun

Propagation

Propagate by seed

Suggested planting locations and garden types

  • Rock garden
  • Cottage and informal garden
  • Patio and container plants
  • Flower borders and beds

Pruning

No pruning required

Pests

Generally pest-free

Diseases

May be susceptible to powdery mildews