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Saxifraga × urbium (11) AGM

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© RHS 2003

Characteristics

Plant type

Herbaceous Perennial

Habit

Mat forming

Resilience

Hardiness

H5 (hardy - cold winter)

Colour

Flower

Pink and White in Summer

Foliage

Green in Autumn, Spring, Summer and Winter

Size

Ultimate height

0.1-0.5 metres

Ultimate spread

0.5-1 metres

Time to ultimate height

2-5 years


Preferred common name

London pride

Family

Saxifragaceae


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

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

S. × urbium is 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

Other common names

  • none-so-pretty

How to grow

Sunlight

  • Part shade
  • Full shade

Aspect

  • North-facing, East-facing or West-facing
  • Exposed or Sheltered

Cultivation

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

Soil

  • Moist but well-drained
  • Acid, Alkaline or Neutral
  • Sand, Loam, Chalk or Clay

Propagation

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

Suggested planting locations and garden types

Cottage/Informal Garden, Flower borders and beds, Garden Edging, Ground Cover, Underplanting of Roses and Shrubs or City/Courtyard Gardens


How to care

Pruning

Cut off flower stems after flowering

Pests

May be attacked by vine weevil

Diseases

Generally disease free