Corylus avellana (F)

Other common names

cobnut, common filbert, European hazelnut, hale nut, hazelnut, stock nut, wood nut, collen

Synonyms

Corylus avellana cobnut

Shrubs Trees

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Large, deciduous shrub or small multi-stemmed tree, about 6m tall, with rounded mid-green leaves turning yellow in autumn, and yellow male catkins to 6cm long in early spring, followed by edible nuts in autumn

Position

Full sun, Partial shade

Soil Types

Chalk, Loam, Sand

Max Height

4-8 metres

Max Spread

4-8 metres

Size

Time to Maturity: 5–10 years
Max Spread: 4-8 metres
Max Height: 4-8 metres

Growing Conditions

Chalk Loam Sand

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

Position

Full sun Partial shade

Aspect: West–facing or South–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): H6

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Betulaceae
Native to GB/Ireland: Yes
Foliage: Deciduous
Habit: Spreading branched
Genus: Corylus are deciduous trees and large shrubs with broad leaves, and showy male catkins in early spring, followed by edible nuts
Name Status: Correct
Horticultural Group

Horticultural Classification Codes

Horticultural Classification Codes are often given to genera which have a large number of species or cultivars. They are used to categorise cultivated plants based on specific, shared characteristics such as shape, colour, size or flowering time, and can be displayed as letters or numbers

For example:
Dahlia ‘Sunset Kate (Sin) = Single flower
Rosa ‘Marigold’ (HT) = Hybrid Tea: This genus produces fruit, but not necessarily edible fruit
Plant Range: Europe, W Asia, N Africa

How to Grow

Cultivation

Grow in any moist but well-drained soil in sun or partial shade, ideal for chalky soils. For more information see cobnuts and filberts

Propagation

Propagate by seed, layering or stooling or removing rooted suckers

Suggested planting locations and garden types

Cottage and informal garden
Wildflower meadow
Wildlife gardens
Edible fruit
Hedging and screens

Pruning

Pruning group 1 and Pruning group 7 - suitable for coppicing alternate years to keep height restricted

Pests

May be susceptible to caterpillars, gall mites, aphids and sawflies. Squirrels like to feed on the nuts

Diseases

May be susceptible to honey fungus, silver leaf and powdery mildews