• 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 'Ukon'

Cherry 'Ukon'

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
Cherry 'Ukon'

© � RHS 2002

  • Other common names Cherry 'Ukon'

  • Synonyms Prunus serrulata 'Grandiflora'
    Prunus serrulata 'Ukon'

  • 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 'Ukon' is a vigorous small deciduous tree with a spreading crown and bronze young foliage giving red-brown autumn colour. Semi-double flowers 5cm in width are yellowish-white, sometimes tinged pink

Characteristics

  • Foliage Deciduous

  • Habit Spreading _ Branched#Spreading / Branched

  • Toxicity

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

  • Exposure Sheltered or Exposed

Soil

  • Chalk

    Loam

  • Chalk

    Sand

  • Chalk

    Clay

  • Chalk

    Chalk

  • MoistureWell-drained, Moist but well-drained

  • SoilLoam, Sand, Clay, Chalk

  • pHAcid, Neutral, Alkaline

Size

  • Ultimate height

    4-8 metres

  • Ultimate spread

    wider than 8 metres

  • Time to ultimate height

    10-20 years

How to grow

Cultivation Grow in moderately fertile soil in full sun

Propagation Propagate by budding or grafting, although softwood cuttings in early summer with bottom heat can be successful.

Suggested planting locations and garden types Low Maintenance

How to care

Pruning Pruning group 1. Prune in mid-summer if silver leaf is a problem

Pests May get caterpillars, leaf-mining moths and bullfinches

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

Advertise here