Corylus avellana – Common hazel

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Betulaceae

Corylus avellana – Common hazel

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Strong shrub that grows to multi-stemmed tree with densely branching, round crown. The brown young twigs are slightly hairy, the older bark starts to peel after some years. The matt green leaves are also hairy, making them feel a little rough. In autumn they turn into brownish yellow. The graceful, male catkins are already visible before winter, but open around late February. The small, red, female flowers grow from the leaf buds and are inconspicuous. The fruits ripen around September. The hazelnuts are partly enclosed by two carpels. The nuts contain many vegetable fats and proteins and are therefore a healthy delicacy. The root system is susceptible to suffocation. Can be used in any soil as long as it is adequately airy and drained.

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Specifications
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Height
5 - 7 m
Crown
round, dark, dense crown
Bark and branches
grey-brown, somewhat flaking later
Leaf
round to obovate, dark green, 5 - 14 cm
Flowers
♂ catkins, brownish yellow, 5 - 7 cm, ♀ inconspicuous, February/March
Fruits
edible nut, about 2 cm, partly enclosed by husk, edible fruits
Spines/thorns
None
Toxicity
usually not toxic to people, (large) pets and livestock
Soil type
any as long as airy and well-drained
Soil moisture
suitable for dry soil
Paving
tolerates partial paving
Winter hardiness zone
5a (-28,8 to -26,1 °C)
Wind resistance
very good
Other resistances
resistant to frost (WH 1 - 6), can withstand wind
Fauna tree
valuable for bees (honey plant)
Application
parks, tree containers, cemeteries, roof gardens, industrial areas, large gardens, small gardens
Shape
clearstem tree, multi-stem treem
Origin
Europe to southern Scandinavia, Middle East, North Africa
Clear stem tree Multi-stem tree calcareous soil loamy soil peaty soil sandy soil tolerates partial paving resistant to frost (WH 1 - 6) suitable for shadow suitable for dry soil can withstand wind dense crown green yellow February average growing Conspicuous bloom valuable for bees (honey plant) non-toxic (usually) Ornamental fruit Edible fruits
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Frequently asked questions
Corylus avellana

Corylus avellana can eventually reach a height of 5 - 7 m, depending on the site and climate conditions.

Corylus avellana is average growing and can eventually reach a height of 5 - 7 m, depending on the site and climate conditions.

The right time to plant Corylus avellana is during the dormancy period. In Western Europe, Corylus avellana with root balls can generally be planted from mid-November to late April, although this depends strongly on the climatic conditions and the species of tree.

Corylus avellana blooms in february.
General