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Trees

Ulmus pumila

Siberian elm

A large, broadly upright, deciduous tree to 30m, with rough, oval, toothed, dark green leaves turning yellow in late autumn. Tiny red flowers are produced in early spring followed by winged green fruit

Other common names

dwarf elm

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Ultimate height

Higher than 12 metres

Time to ultimate height

more than 50 years

Ultimate spread

Wider than 8 metres

Clay

Loam

Sand

Moisture

Moist but well–drained, 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

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: Ulmaceae
Native to GB / Ireland: No
Foliage: Deciduous
Habit: Bushy
Genus: Ulmus are deciduous trees, often large, with elliptic or ovate leaves often colouring well in autumn; inconspicuous flowers are followed by winged fruits
Name status: Correct

How to grow

Cultivation

Grow in any well-drained soil in full sun or partial shade

Propagation

Propagate by seed sown in containers in spring or autumn, or by greenwood cuttings in summer

Suggested planting locations and garden types

Cottage and informal garden
Low Maintenance

Pruning

Pruning group 1

Pests

May be susceptible to aphids, bark beetles, horse chestnut scale and elm gall mites

Diseases

May be susceptible to Dutch elm disease (partially resistant), coral spot, honey fungus and phytophthora

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