Black Walnut (Juglans nigra)
The most majestic of the walnut trees. The Black Walnut can grow to 50m tall and supplies some of the most valuable and most expensive timber for furniture and veneer. The nuts are hard, but very tasty.
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Appearance
The most majestic of the walnut trees. The Black Walnut can grow to 50m tall and supplies some of the most valuable and most expensive timber for furniture and veneer. The nuts are hard, but very tasty.
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Spring
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Autumn
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Leaves
Odd-pinnate leaves, 30-60cm long, 12-24cm wide. Oblong leaflets with toothed edge. Leaves are glossy dark green above, pale blue-green below, turning a decorative yellow colour in autumn.
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Leaf upperside
Odd-pinnate leaves, 30-60cm long, 12-24cm wide. Oblong leaflets with toothed edge. Leaves are glossy dark green above, pale blue-green below, turning a decorative yellow colour in autumn.
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Flowers
Flowering period: IV-V, pretty green catkins; male flower-heads appear on the previous year's wood, while the female flowers appear in clusters of 2-5 on terminal ears of fresh shoots.
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Fruits
Thick-shelled nut with rough ribs surrounded by a fleshy, leathery outer shell. Nuts are edible, difficult to crack.
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Bark
Grey or grey-brown bark with deep furrows. Bark is thick and hard. Branches are green or pale brown.
Application
Forage for honey-bees, public areas, parks, roadside verges,
Native regions
Eastern North America
Location parameters
Light: sunny to semi-shady, temperature: warm, soil: dry to moist, soil structure: firm to loose, soil depth: deep, soil quality: medium to high, pH value: 6.0 to 8.0
Demands
Extremely demanding. In its native habitat, grows in moist, well-drained soils, frequently along river banks. Grows only slowly in dry locations.
Growth
Height of growth: 15m to 25m, growth habits: spreading, tree-like, round, open-crowned
Leaves
Odd-pinnate leaves, 30-60cm long, 12-24cm wide. Oblong leaflets with toothed edge. Leaves are glossy dark green above, pale blue-green below, turning a decorative yellow colour in autumn.
Flowers
Flowering period: IV-V, pretty green catkins; male flower-heads appear on the previous year's wood, while the female flowers appear in clusters of 2-5 on terminal ears of fresh shoots.
Fruits
Thick-shelled nut with rough ribs surrounded by a fleshy, leathery outer shell. Nuts are edible, difficult to crack.
Bark
Grey or grey-brown bark with deep furrows. Bark is thick and hard. Branches are green or pale brown.
Roots
Deep-rooting