• AGM plants

    AGM plants have been through a rigourous 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

Pleiospilos nelii

Cleftstone

AGM plants

AGM plants have been through a rigourous 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
Cleftstone

© � RHS

  • Other common names Cleftstone
    Mimicry plant

    Splitrock

    see more
  • Genus Pleiospilos are small, stemless, succulent perennials mostly with one or two pairs of very fleshy, grey-green leaves united at the base, and daisy-like yellow or orange flowers, sometimes coconut-scented, in late summer and autumn

  • Family Aizoaceae / Aizoaceae

  • Species P. nelii is a succulent perennial with paired, hemispherical grey-green leaves to 8cm long, and daisy-like, pink-flushed, orange flowers 7cm across in late summer

  • Plant range S. Africa

Characteristics

  • 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)
    Old hardiness ratings

    While we update our systems with the new hardiness ratings you may still see old hardiness ratings in your search results. These are denoted as 'Old'.

    • H1 - Requires heated glass
    • H2 - Requires unheated glass
    • H3 - Hardy outside in some regions of the UK
    • H4 - Hardy throughout the UK
    • H1 + H3 - Requires heated glass but may be grown outside in summer

    For full details of the hardiness ratings see

    see more

    H2

Colour

Sunlight

  • Full Sun

  • Aspect South-facing or West-facing

  • Exposure Sheltered

Soil

  • Chalk

    Sand

  • Chalk

    Chalk

  • Chalk

    Loam

  • MoistureWell-drained

  • SoilSand, Chalk, Loam

  • pHNeutral, Acid

Size

  • Ultimate height

    Up to 10 cm

  • Ultimate spread

    0-0.1 metre

  • Time to ultimate height

    2-5 years

How to grow

Cultivation Under glass, grow in standard cactus compost in full light. From early summer to late autumn water sparingly but regularly and apply a low nitrogen liquid fertiliser every 4-6 weeks. Keep dry at all other times

Propagation Propagate by seed at 19-24�C (66-75�F) or detach offsets, from late spring to summer

Suggested planting locations and garden types Patio & Container Plants

How to care

Pruning No pruning required

Pests Vulnerable to aphids while flowering

Diseases Generally disease free

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