• 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

Acer pseudoplatanus

sycamore

  • Other common names sycamore
    great maple

    harewood
    mock plane
    Scotch plane
    Scottish maple

    see more
  • Family Sapindaceae

  • Genus Acer can be deciduous trees or large shrubs with paired, often palmately-lobed leaves and small flowers followed by characteristic winged fruits. Many have fine autumn colour, and some have ornamental stems

  • Details A. pseudoplatanus is a large, fast-growing, resilient, deciduous tree with dark green, five-lobed leaves 10-20cm long. Yellow-green, catkin-like flowers in spring are followed by bunches of green, winged fruit

  • Plant range NW to C Europe, Italy, W Asia

Characteristics

  • Foliage Deciduous

  • Habit Bushy

  • 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)

    H7

Colour

Sunlight

  • Full Sun

  • Partial Shade

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

  • Exposure Sheltered

Soil

  • Chalk

    Chalk

  • Loam

    Loam

  • Sand

    Sand

  • Clay

    Clay

  • MoistureWell-drained, Moist but well-drained

  • SoilChalk, Loam, Sand, Clay

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height Higher than 12 metres

  • Ultimate spread wider than 8 metres

  • Time to ultimate height more than 50 years

How to grow

Cultivation Grows best as a specimen tree in fertile, moist but well-drained soil, but can tolerate almost any conditions, and may become a weed in some situations

Propagation Propagate by seed

Suggested planting locations and garden types Low Maintenance Architectural Coastal Wildlife Gardens

How to care

Pruning Pruning group 1

Pests Aphids, horse chestnut scale, caterpillars and gall mites may be a problem

Diseases Verticillium wilt and tar spot may be a problem

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