Okanese Poplar vs Black Walnut - TreeTime.ca

Okanese Poplar vs Black Walnut

Populus x Okanese

Juglans nigra

COMING SOON

(new stock expected: fall of 2025)

NOT AVAILABLE THIS SEASON - MIGHT RETURN

Okanese Poplar
Black Walnut

Okanese Poplar is an excellent shelterbelt tree. It's one of the hardiest and fastest growing trees you can plant on the prairies. This hybrid poplar is disease resistant, drought and cold tolerant, produces no fuzz, and requires little maintenance. Okanese poplar also makes for a good privacy screen on larger properties.

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.

Okanese Poplar Quick Facts

Black Walnut Quick Facts

Zone: 2a
Zone: 3a
Height: 18 m (60 ft)
Height: 14 m (45 ft)
Spread: 8 m (26 ft)
Spread: 9 m (30 ft)
Light: full sun
Light: partial shade, full sun
Moisture: any
Moisture: dry, normal
Growth rate: very fast
Growth rate: slow
Life span: medium
Life span: long
Suckering: high
Suckering: low


Nuts: corrugated nut with edible meat
Hybrid: yes
Hybrid: no
Catkins: no
Catkins: no

In row spacing: 2.4 - 3 m (8 - 10 ft)

Between row spacing: 5 m (16 ft)
Other Names: american walnut