Scleranthus biflorus

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two-flowered knawel

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two-flowered knawel visionspictures.com
two-flowered knawel visionspictures.com
two-flowered knawel visionspictures.com
Herbaceous Perennial
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An unusual, hardy evergreen perennial producing a mound of small, spiky moss-like dark green leaves and inconspicious bronze flowers in the summer. Ideal for japanese gardens, ground cover or for filling in gaps in paving stones and rock crevices

Position

Full sun, Partial shade

Soil Types

Loam, Sand

Max Height

Up to 10 cm

Max Spread

0.1-0.5 metres

Size

Time to Maturity
2–5 years
Max Spread
0.1-0.5 metres
Max Height
Up to 10 cm

Growing Conditions

Loam Sand
Moisture
Well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun Partial shade
Aspect
East–facing or South–facing or West–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)
H4

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Caryophyllaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Clump forming
Genus
A genus of compact, evergreen perennials forming a bright green mound of moss-like linear foliage and petal-less yellow-green flowers
Name Status
Correct
Plant Range
Australia, New Zealand

How to Grow

Cultivation

Grow in well-drained, sandy or loamy soil in full sun. Will not tolerate waterlogging or very hot, humid weather. Once established, will cope with light foot traffic well

Propagation

Propagate by division when the centre of the plant begins to die back with age

Suggested planting locations and garden types

  • City and courtyard gardens
  • Cottage and informal garden
  • Rock garden
  • Low Maintenance
  • Banks and slopes
  • Flower borders and beds
  • Garden edging
  • Ground cover

Pruning

No pruning required but can be cut back annually to encourage fresh growth

Pests

Generally pest-free

Diseases

Generally disease-free