• 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

Rheum 'Ace of Hearts'

rhubarb 'Ace of Hearts'

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
rhubarb 'Ace of Hearts'

© RHS

  • Other common names rhubarb 'Ace of Hearts'

  • Synonyms Rheum × hybridum 'Ace Of Hearts'
    Rheum 'Ace of Spades'

  • Family Polygonaceae

  • Genus Rheum are robust rhizomatous herbaceous perennials with large, simple or palmately lobed leaves and tall leafy stems bearing large panicles of tiny flowers

  • Details 'Ace of Hearts' is an ornamental rhubarb; a hybrid between the giant R. palmatum and the more diminutive R. kialense making it well-suited to smaller gardens. Leaves are heart-shaped and veined red on the underside. Pale pink flower spikes rise from the clumps in early summer

Characteristics

  • Foliage Deciduous

  • Habit Bushy

  • Toxicity May cause severe discomfort if ingested

  • 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)

    H6

Colour

Sunlight

  • Partial Shade

  • Full Sun

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

  • Exposure Sheltered or Exposed

Soil

  • Clay

    Clay

  • Loam

    Loam

  • MoistureMoist but well-drained

  • SoilClay, Loam

  • pHAcid, Neutral

Size

  • Ultimate height 1-1.5 metres

  • Ultimate spread 0.5-1 metres

  • Time to ultimate height 2-5 years

How to grow

Cultivation Requires a moisture-retentive but well-draining situation in sun or partial shade. Benefits from mulching

Propagation Propagate by division in Spring

Suggested planting locations and garden types Flower borders and beds Cottage & Informal Garden Architectural Wildlife Gardens

How to care

Pruning Deadhead spent flower spikes

Pests Generally trouble-free but may suffer from blackfly (black aphids)

Diseases Generally trouble-free

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