Carpinus polyneura

Trees

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A medium-sized deciduous tree to 15m (50ft) high, with grey older bark and purplish-brown younger twigs and stems. The foliage emerging in spring is reddish-green, maturing to a glossy dark-green in summer. Autumn foliage colour is not very remarkable. The green, male and female catkins are produced separately on the same tree in May to June. After fertilisation, the female flowers develop into hop-like clusters in late summer to autumn, containing winged seeds that disperse on the wind when ripe

Position

Full sun, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

Higher than 12 metres

Max Spread

wider than 8 metres

Size

Time to Maturity: 10–20 years
Max Spread: wider than 8 metres
Max Height: Higher than 12 metres

Growing Conditions

Chalk Clay Loam Sand

Moisture: Moist but well–drained
pH: Acid or Alkaline or Neutral

Position

Full sun Partial shade

Aspect: South–facing or West–facing or East–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): H5

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Betulaceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Bushy
Genus: Carpinus are deciduous shrubs and trees with attractive foliage and hop-like fruit clusters in late summer and autumn
Name Status: Correct
Plant Range: S China

How to Grow

Cultivation

Easy to grow in most soils, as long as they are reasonably moist and well drained. Cannot tolerate dry soils. Best given shelter from cold winds

Propagation

Propagate by seed, softwood cuttings in spring and early summer, or grafting

Suggested planting locations and garden types

Architectural
City and courtyard gardens
Cottage and informal garden

Pruning

Pruning group 1

Pests

May be susceptible to caterpillars and aphids

Diseases

May be susceptible to powdery mildews, coral spot and sometimes honey fungus