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Trees

Fraxinus mandshurica

Manchurian ash

Large, deciduous tree reaching 30m in height, with greyish shoots and stalkless, slender dark green leaves about 40cm long composed of up to 13 leaflets, turning red and yellow in autumn. Greenish-yellow petalless flowers in compact panicles in spring may be followed by large clusters of broadly winged brownish fruits produced on last years wood (fruits not produced in Britain). Dark brown winter buds

Other common names

Japanese ash

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Ultimate height

Higher than 12 metres

Time to ultimate height

20–50 years

Ultimate spread

Wider than 8 metres

Clay

Chalk

Loam

Sand

Moisture

Moist but well–drained

pH

Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full sun

Aspect

South–facing or West–facing or East–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)

Botanical details

Family: Oleaceae
Native to GB / Ireland: No
Foliage: Deciduous
Habit: Spreading branched
Genus: Fraxinus are medium-sized to large, mostly deciduous trees with attractive pinnate leaves, sometimes conspicuous flowers and autumn colour, and distinctive winged fruits
Name status: Correct
Plant range: Far East

How to grow

Cultivation

Excellent for woodland and coastal gardens where there is moist but well-drained alkaline or neutral soil and full sun. See tree cultivation

Propagation

Propagate by seed or grafting

Suggested planting locations and garden types

Coastal
Cottage and informal garden
Wildlife gardens

Pruning

Pruning group 1

Pests

Generally pest-free

Diseases

Ash dieback has recently been found in the UK. Restrictions have been put in place (from 29 October 2012) regarding both the importation of ash from abroad and the movement of ash within the UK. May also be susceptible to honey fungus

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