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Trees

Zelkova serrata Green Vase ('Flekova')

Japanese zelkova [Green Vase]

A fast-growing, vase-shaped, deciduous tree to 12m tall, with upright, arching branches. At maturity the bark is smooth and grey, peeling to reveal orange patches. Toothed, fresh green leaves emerge in spring and turn orange and bronze-red in autumn. An elegant specimen tree

Synonyms

Zelkova serrata 'Flekova'

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Plant nurseries
3 suppliers

Ultimate height

Higher than 12 metres

Time to ultimate height

more than 50 years

Ultimate spread

4–8 metres

Chalk

Clay

Loam

Sand

Moisture

Moist but well–drained

pH

Acid, Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full sun
Partial shade

Aspect

East–facing or South–facing or West–facing or North–facing

Exposure

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)

Botanical details

Family: Ulmaceae
Native to GB / Ireland: No
Foliage: Deciduous
Habit: Spreading branched
Genus: Zelkova are large deciduous trees or shrubs with neatly serrate, ovate leaves and inconspicuous flowers and fruit; good autumn colour
Name status: Trade

How to grow

Cultivation

Grow in deep, fertile, moist but well-drained soil in sun or partial shade with protection from cold, drying winds

Propagation

Propagate by sowing seed in containers in a cold frame in autumn. Take greenwood cuttings (preferably from young plants) in summer. Graft in winter. Remove rooted suckers in winter

Suggested planting locations and garden types

Architectural

Pruning

See pruning group 1

Pests

May be susceptible to horse chestnut scale

Diseases

May be susceptible to bacterial canker, Dutch elm disease and honey fungus (rarely)

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