Prunus 'Ukon'

RHS Plant Profile
cherry 'Ukon'

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cherry 'Ukon' RHS 2002

Synonyms

Prunus serrulata 'Ukon'
Prunus serrulata 'Grandiflora'
Prunus serrulata f. grandiflora
Prunus serrulata f. luteovirens

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Trees
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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

Position

Full sun

Soil Types

Chalk, Clay, Loam, Sand

Max Height

4-8 metres

Max Spread

wider than 8 metres

Size

Time to Maturity
10–20 years
Max Spread
wider than 8 metres
Max Height
4-8 metres

Growing Conditions

Chalk Clay Loam Sand
Moisture
Moist but well–drained or Well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun
Aspect
South–facing or West–facing or East–facing or North–facing
Exposure
Exposed or Sheltered
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 & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Rosaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Spreading branched
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
Name Status
Accepted

How to Grow

Cultivation

Grow in moderately fertile soil in full sun

Propagation

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

Suggested planting locations and garden types

  • City and courtyard gardens
  • Cottage and informal garden
  • Wildlife gardens
  • Flower borders and beds

Pruning

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

Pests

May be susceptible to caterpillars, leaf-mining moths, bullfinches and aphids

Diseases

May be susceptible to peach leaf curl, silver leaf, bacterial canker, blossom wilt and honey fungus