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Zelkova serrata AGM

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© RHS 2002

Characteristics

Plant type

Tree

Habit

Spreading / Branched

Resilience

Hardiness

H6 (hardy - very cold winter)

Colour

Flower

Green in Spring

Foliage

Green in Spring and Summer
Orange, Red and Yellow in Autumn

Fruit

Green in Autumn

Stem

Grey/Silver in

Size

Ultimate height

Higher than 12 metres

Ultimate spread

wider than 8 metres

Time to ultimate height

20-50 years


Preferred common name

Japanese zelkova

Family

Ulmaceae


Zelkova are large deciduous trees or shrubs with neatly serrate, ovate leaves and inconspicuous flowers and fruit; good autumn colour

Z. serrata is a spreading medium-sized deciduous tree with smooth grey bark and neatly toothed, lance-shaped leaves turning orange and yellow in autumn. Insignificant greenish flowers and fruits

Other common names

  • keaki
  • keyaki
  • saw-leaf zelkova

How to grow

Sunlight

  • Full sun
  • Part shade

Aspect

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

Cultivation

Grow in deep, fertile, moist soil and protect from cold drying winds

Soil

  • Well-drained or Moist but well-drained
  • Acid, Alkaline or Neutral
  • Loam, Chalk or Clay

Propagation

Propagate by softwood cuttings from young plants in summer, grafting in winter or propagate by seed sown outdoors in autumn

Suggested planting locations and garden types

Low Maintenance


How to care

Pruning

Pruning group 1

Pests

Generally pest free

Diseases

May be affected by Dutch elm disease