• AGM plants

    AGM plants have been through a rigorous trial and assessment programme. They are:

    • Excellent for ordinary use in appropriate conditions
    • Available to buy
    • Of good constitution
    • Essentially stable in form & colour
    • Reasonably resistant to pests & diseases

Saxifraga 'Primuloides' (umbrosa) (11)

London pride 'Primuloides'

London pride 'Primuloides'


  • Other common names London pride 'Primuloides'

  • Family Saxifragaceae

  • 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

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

  • Details 'Primuloides' is a mat-forming evergreen perennial with rosettes of spoon-shaped dark green, scalloped leaves and erect stems to 20cm tall, with panicles of starry white flowers, spotted with red, in summer


  • Foliage Evergreen

  • Habit Mat forming

  • 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)




  • Partial Shade

  • Aspect South-facing or North-facing or West-facing or East-facing

  • Exposure Exposed or Sheltered


  • Chalk


  • Chalk


  • Chalk


  • MoistureMoist but well-drained

  • SoilSand, Loam, Chalk

  • pHAcid, Neutral, Alkaline


  • Ultimate height 0.1-0.5 metres

  • Ultimate spread 0.1-0.5 metres

  • Time to ultimate height 2-5 years

How to grow

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

Propagation Pot up the offsets in spring; cultivars will not come true from seed

Suggested planting locations and garden types Garden Edging Ground Cover Flower borders and beds City & Courtyard Gardens Coastal Cottage & Informal Garden Rock Garden Patio & Container Plants

How to care

Pruning No pruning required

Pests Glasshouse red spider mite, aphids, vine weevil, slugs and snails may be a problem

Diseases Generally trouble free

Advertise here

Did you find the information you were looking for?

RHS members can get exclusive individual advice from the RHS Gardening Advice team.

Join the RHS now