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ShrubsTreesSynonym

Corylus maxima Halle Giant

filbert 'Halle'sche Riesennuss'

A deciduous, large shrub or small tree up to 8m high and 5m across. After the pale yellow catkins in early spring, green leaves emerge that turn pale yellow in autumn before falling. It is a heavy bearer of large nuts in autumn, harvest before the squirrels get them!

Synonyms

Corylus avellana 'Bollwylle'
Corylus avellana 'Merveille de Bollwyller'
see moreCorylus maxima 'Géant de Halle'
Corylus maxima 'Monsieur de Bouweller'
Corylus avellana 'Halle Giant'
Corylus avellana 'Wunder aus Bollweiler'
Corylus avellana 'Merveille de Bollwiller'
Corylus maxima Géant de Halle
Corylus maxima Halle Giant

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Ultimate height

4–8 metres

Time to ultimate height

5–10 years

Ultimate spread

2.5–4 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 North–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: Betulaceae
Native to GB / Ireland: No
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: Accepted

How to grow

Cultivation

Grow in nay fertile, well-drained but moisture-retentive soil. For more information see cobnut cultivation and filbert cultivation.

Propagation

Propagate by hardwood cuttings in autumn

Suggested planting locations and garden types

Wildlife gardens
Edible fruit

Pruning

Pruning group 1

Pests

May be 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

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