• 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

Prunus domestica 'Mallard' (D)

plum 'Mallard'

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
plum 'Mallard'

© RHS

  • Other common names plum 'Mallard'

  • Family Rosaceae

  • Genus Prunus can be deciduous or evergreen trees or shrubs with showy flowers in spring, and often good autumn foliage colour. Some have edible fruit in autumn, and a few species have ornamental bark

  • Details 'Mallard' is a dessert cultivar that produces a medium-sized, red plum with a good flavour and good, regular crops. It has moderate vigour and belongs to Pollination group 1. Cropping time is from mid to late August

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

  • Chalk

    Loam

  • Chalk

    Sand

  • Chalk

    Clay

  • MoistureWell-drained, Moist but well-drained

  • SoilLoam, Sand, Clay

  • pHNeutral, Acid

Size

  • Ultimate height 2.5-4 metres

  • Ultimate spread 2.5-4 metres

  • Time to ultimate height 5-10 years

How to grow

Cultivation Grow in well-drained loamy to clay soil in full sun. Plums will tolerate a range of soils as long as they are well-drained and have a neutral to acid pH. Suitable for all training forms, including fan-trained. Keep a weed-free area of at least 60cm radius around trunk. Thin fruit if necessary. Irrigate in dry periods. Flowers early, so at risk from spring frosts

Propagation Propagate by chip budding or grafting onto a rootstock for fruit. The rootstock used will largely determine the size of the tree

Suggested planting locations and garden types Wall-side Borders Cottage & Informal Garden

How to care

Pruning Regular pruning required according to tree form: pruning plums or pruning established fans

Pests Can be susceptible to aphids, caterpillars, fruit tree red spider mite, brown scale, plum moth and bullfinches

Diseases May be affected by silver leaf, bacterial canker, blossom wilt and fruit by brown rot

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