Hazel (Corylus avellana)
The Hazel is a multi-stemmed, wide, upright large shrub with initially moderate and later rapid growth potential. The yellow catkins flower in early spring. The edible hazelnuts ripen in September. Very undemanding shrub.
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Appearance
The Hazel is a multi-stemmed, wide, upright large shrub with initially moderate and later rapid growth potential. The yellow catkins flower in early spring. The edible hazelnuts ripen in September. Very undemanding shrub.
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Spring
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Leaves
Heart-shaped leaves, 5-10cm long, 3-8cm wide, leaf stem 0.5-1.5cm long, with velvety hairs at first. Double-toothed edge. Leaves are green above and pale green below, turning deep yellow in autumn.
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Leaf upperside
Heart-shaped leaves, 5-10cm long, 3-8cm wide, leaf stem 0.5-1.5cm long, with velvety hairs at first. Double-toothed edge. Leaves are green above and pale green below, turning deep yellow in autumn.
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Leaf underside
Heart-shaped leaves, 5-10cm long, 3-8cm wide, leaf stem 0.5-1.5cm long, with velvety hairs at first. Double-toothed edge. Leaves are green above and pale green below, turning deep yellow in autumn.
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Flowers
Flowering period II-IV, pretty yellow male catkins appear in March-April before the leaves sprout. Female flowers remain hidden except for the bright red, thread-like scars in the buds.
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Fruits
Edible brown hazelnuts with a hard shell.
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Bark
Grey or grey-brown bark, smooth or lenticular. Branches are pale brown, brown or yellowish-brown.
Application
Afforestation, open fields, pioneer tree, tip afforestation, stabilization of shores, noise abatement, wind-break, bird protection, parks, urban areas, roadside verges, car parks, pedestrian precincts, container plants, gardens, front gardens, verandas
Native regions
Central and northern Europe
Location parameters
Light: full sun to shady, temperature: warm to cool, soil: dry to fresh, soil structure: normal, soil depth: shallow to deep, compaction: to be avoided, soil quality: low to high, pH value: 6.5 to 8.5
Demands
Sun to slight shade; prefers warmth, frost-hardy, grows in all weakly acid to chalky substrates, extremely adaptable, dry to damp; tolerant of urban climates; intolerant of salt
Growth
Height of growth: 5m to 7m, spread: 4m to 6m, moderately rapid growth potential, growth habits: wide, upright, often multi-stemmed
Leaves
Heart-shaped leaves, 5-10cm long, 3-8cm wide, leaf stem 0.5-1.5cm long, with velvety hairs at first. Double-toothed edge. Leaves are green above and pale green below, turning deep yellow in autumn.
Flowers
Flowering period II-IV, pretty yellow male catkins appear in March-April before the leaves sprout. Female flowers remain hidden except for the bright red, thread-like scars in the buds.
Fruits
Edible brown hazelnuts with a hard shell.
Bark
Grey or grey-brown bark, smooth or lenticular. Branches are pale brown, brown or yellowish-brown.
Roots
Intensive, far-reaching surface-rooter, intolerant of soil compaction