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White Ash vs Black Walnut

Fraxinus americana

Juglans nigra

White Ash
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White Ash is a large deciduous tree that's often grown in residential yards and along boulevards.

Similar to Green Ash, White Ash is distinguished by the lighter colour of the undersides of the leaves.

While Green Ash turns gold in the fall, White Ash turns a gorgeous burgundy.

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.

WHITE ASH QUICK FACTS

BLACK WALNUT QUICK FACTS

Zone: 3a
Zone: 3a
Height: 20 m (66 ft)
Height: 14 m (45 ft)
Spread: 8 m (25 ft)
Spread: 9 m (30 ft)
Moisture: normal
Moisture: dry, normal
Light: full sun
Light: partial shade, full sun
Fall colour: first yellow, then red to deep purple
Fall colour: yellow
Growth rate: medium
Growth rate: slow
Life span: long
Life span: long
Maintenance: low
Suckering: none
Suckering: low
Pollution tolerance: high
Pollution tolerance: high







Ships To Canada: yes
Ships to USA: yes
Ships To Canada: yes
Ships to USA: yes