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Black Walnut

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Black Walnut

Juglans nigra

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The Black Walnut is a slow growing, large, straight-stemmed and high value timber tree with an open crown. It produces a dense, very hard, edible nut. The root system usually includes a deep tap-root and several wide-spreading and deeply set lateral roots.

Black Walnut has a deeply-furrowed, black bark. Its Leaves are about 1 foot long, composed of 15 - 23 slightly stalked leaflets on a moderately stout stock which provide good dappled shade.

Its roots produce a substance named juglone that is toxic to some other plants. Consider this when choosing where you plant a black walnut, as you will not be able to grow tomato, potato, cabbage, eggplant, blueberry, azalea, rhododendron, lilac, red pine and apple in the surrounding area.

Despite being highly valued for its edible nuts, high value timber, and its shade tree aesthetics, it is rare to see this tree on the prairies. Plant this tree once when it is young as it does not respond well to transplanting.

BLACK WALNUT
QUICK FACTS

Zone: 3a
Height: 14 m (45 ft)
Spread: 9 m (30 ft)
Moisture: dry, normal
Light: partial shade, full sun
Growth rate: slow
Life span: long
Suckering: low
Pollution tolerance: high

Other names: american walnut

Ships to Canada: yes
Ships to USA: yes

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