• 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

Aesculus pavia 'Atrosanguinea'

red buckeye 'Atrosanguinea'

red buckeye 'Atrosanguinea'

© RHS

  • Other common names red buckeye 'Atrosanguinea'

  • Family Sapindaceae

  • Genus Aesculus can be deciduous trees or large shrubs with showy flowers, palmately-lobed leaves and sometimes good autumn colour

  • Details 'Atrosanguinea' forms a small, upright tree with glossy green, palmate leaves, pinky-bronze when young. Upright, rather sparse panicles of deep red flowers appear in early summer followed by pale brown, smooth-skinned fruit

Characteristics

  • Foliage Deciduous

  • Habit Columnar/Upright

  • Toxicity Ingestion may cause severe discomfort

  • 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

Sunlight

  • Full Sun

  • Partial Shade

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

  • Exposure Sheltered or Exposed

Soil

  • Clay

    Clay

  • Sand

    Sand

  • Loam

    Loam

  • MoistureMoist but well-drained

  • SoilClay, Sand, Loam

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height 4-8 metres

  • Ultimate spread 2.5-4 metres

  • Time to ultimate height 20-50 years

How to grow

Cultivation Needs a deep, fertile, moist but well-drained soil in sun or semi-shade

Propagation Propagate by seed or grafting

Suggested planting locations and garden types Low Maintenance Architectural Cottage & Informal Garden

How to care

Pruning Pruning group 1

Pests May suffer from horse chestnut scale insects; they have an intermediate level of susceptibility to horse chestnut leaf-mining moth

Diseases May suffer from horse chestnut leaf blotch; all species are thought to be susceptible to horse chestnut bleeding canker, but the level of susceptibility for this species is not yet known

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