• 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

Pyrus communis 'Williams' Bon Chrétien' (D/c)

pear 'Williams' Bon Chré

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
pear 'Williams' Bon Chré

© RHS 2002

  • Other common names pear 'Williams' Bon Chré
    tien'

  • Synonyms Pyrus 'William'

  • Family Rosaceae

  • Genus Pyrus are deciduous trees or shrubs with oval leaves and scented white flowers in spring, followed by green or brown fruits, edible in some species

  • Details 'Williams' Bon Chrétien' is a dessert pear, 2.5-8m tall depending upon the rootstock. Flowers white, fruit yellow-green with a good flavour. Pollination group 3. Season of use: mid- to late September

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)

    H6

Colour

Sunlight

  • Full Sun

  • Aspect South-facing or West-facing

  • Exposure Sheltered

Soil

  • Loam

    Loam

  • Clay

    Clay

  • Sand

    Sand

  • MoistureWell-drained, Moist but well-drained

  • SoilLoam, Clay, Sand

  • pHNeutral

Size

  • Ultimate height 4-8 metres

  • Ultimate spread 4-8 metres

  • Time to ultimate height 5-10 years

How to grow

Cultivation Suitable for all training forms including bush, espaliers, fan-training, pyramids and cordons. Flowers early and so at risk from spring frosts. Needs another cultivar for pollination. Keep a weed free area of 60cm radius around the trunk. Thin fruit if necessary. Unsuitable for use as a pollinator for 'Louise Bonne of Jersey' and vice versa

Propagation Propagate by grafting or chip budding onto a clonal rootstock for fruit; quince rootstocks are usually used. The rootstock used will largely determine the vigour

Suggested planting locations and garden types Architectural Cottage & Informal Garden

How to care

Pruning Spur bearer. Regular pruning required according to form: cordons, espaliers and pruning established fans. To train as bush see pruning new pear trees, winter pear pruning and renovating pear trees

Pests May be attacked by aphids, caterpillars, codling moth, bullfinches, pear midge, blister mite and pear and cherry slugworm

Diseases Susceptible to pear scab. It may be affected by pear rust, brown rot, blossom wilt and fireblight

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