• AGM plants

    AGM plants have been through a rigourous 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 'Czar' (C)

Plum 'Czar'

AGM plants

AGM plants have been through a rigourous 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 'Czar'

© � RHS 2002

  • Other common names Plum 'Czar'

  • 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

  • Family Rosaceae / Rosaceae

  • Species 'Czar' is a compact, reliably fruiting, self-fertile culinary plum to 2.5-4m in height depending upon the rootstock. White flower in spring, fruits very deep blue in early 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)
    Old hardiness ratings

    While we update our systems with the new hardiness ratings you may still see old hardiness ratings in your search results. These are denoted as 'Old'.

    • H1 - Requires heated glass
    • H2 - Requires unheated glass
    • H3 - Hardy outside in some regions of the UK
    • H4 - Hardy throughout the UK
    • H1 + H3 - Requires heated glass but may be grown outside in summer

    For full details of the hardiness ratings see

    see more

    H6

Colour

Sunlight

  • Full Sun

  • Aspect South-facing or West-facing

  • Exposure Sheltered

Soil

  • Chalk

    Loam

  • Chalk

    Sand

  • MoistureWell-drained, Moist but well-drained

  • SoilLoam, Sand

  • pHNeutral

Size

  • Ultimate height

    2.5-4 metres

  • Ultimate spread

    2.5-4 metres

  • Time to ultimate height

    5-10 years

How to grow

Cultivation Keep a weed-free area of at least 60cm radius around trunk. Thin fruits if necessary. Irrigate in dry periods. Less susceptible to frost damage than many other cultivars

Propagation Propagate by budding or grafting onto a clonal rootstock. The rootstock used with effect the size of the plant

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

How to care

Pruning Regular pruning required according to tree form

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

Diseases Susceptible to silver leaf

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