Saxifraga × urbium (11)

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London pride RHS 2003
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Other common names

none-so-pretty

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Herbaceous Perennial
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An evergreen perennial to 30cm in height, forming wide mats of rosettes of spoon-shaped, long-stalked leaves with scalloped margins. Small pink-flushed white flowers are borne in lax panicles from early summer

Position

Full shade, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.5-1 metres

Size

Time to Maturity
2–5 years
Max Spread
0.5-1 metres
Max Height
0.1-0.5 metres

Growing Conditions

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

Position

Full shade Partial shade
Aspect
North–facing or West–facing or East–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)
H5

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Saxifragaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Matforming
Genus
Saxifraga can be annuals, biennials, evergreen or herbaceous perennials, mostly mat-forming in habit, with simple or palmately lobed leaves and starry or rounded flowers which may be solitary of in panicles or cymes
Name Status
Correct
Horticultural Group

Horticultural Classification Codes

Horticultural Classification Codes are often given to genera which have a large number of species or cultivars. They are used to categorise cultivated plants based on specific, shared characteristics such as shape, colour, size or flowering time, and can be displayed as letters or numbers

For example:
Dahlia ‘Sunset Kate (Sin) = Single flower
Rosa ‘Marigold’ (HT) = Hybrid Tea

Gymnopera section saxifrages are perennials forming rosettes of evergreen leaves, with leafless stems bearing panicles of small, 5-petalled flowers

How to Grow

Cultivation

Easy to grow in any type of soil or situation but ideal for deep or partial shade

Propagation

Propagate by division in spring or detach rosettes and root in late spring to early summer

Suggested planting locations and garden types

  • Cottage and informal garden
  • City and courtyard gardens
  • Flower borders and beds
  • Garden edging
  • Ground cover
  • Underplanting of roses and shrubs

Pruning

Cut off flower stems after flowering

Pests

May be susceptible to vine weevil

Diseases

Generally disease-free