Black Walnut vs Mountain Maple - TreeTime.ca

Black Walnut vs Mountain Maple

Juglans nigra

Acer spicatum

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Black Walnut
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The Black Walnut is a slow growing, large, straight-stemmed tree with an open crown. It produces dense, very hard, edible nuts.

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.

Despite being highly valued for its edible nuts and its shade tree aesthetics, it is rare to see this tree on the prairies.

Note: Black Walnut's 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.

Note: Plant this tree once. It will not respond well to transplanting.

Note: Although self-pollinating, planting two trees significantly improves nut production.

A top CO2 absorbing species. Experts think this tree may help climate change more than others.

Used to growing in the shadows of the damp forest, White Maple (aka Mountain Maple) is a great fit for shady and wet areas, such as beneath larger trees. Unlike most of its cousins, the White Maple is a shrub instead of a tree. It's still a maple, however, with sap that can be made into Maple syrup to prove it!

In May and June, the classic shapes of Maple leaves are joined by clusters of green and yellow flowers. Soon after, red samaras (aka helicopter seeds or whirligigs) appear. This distinctive appearance makes White Maple an excellent choice for giving urban yards a unique (and patriotic) look.

Note: This species is currently unavailable. Grow your own using Mountain Maple seeds at SeedTime.ca.

Black Walnut Quick Facts

Mountain Maple Quick Facts

Zone: 3a
Zone: 2a
Height: 14 m (45 ft)
Height: 15 m (50 ft)
Spread: 9 m (30 ft)
Spread: 15 m (50 ft)
Moisture: dry, normal
Moisture: normal, wet
Light: partial shade, full sun
Light: full sun
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no
Fall colour: purple to bright red to yellow
Flowers: yellow and green
Bark: thin reddish or greyish
Nuts: corrugated nut with edible meat
Growth rate: slow
Growth rate: fast
Life span: long
Life span: long
Maintenance: medium
Suckering: low
Suckering: medium




Other Names: american walnut
Other Names: white maple