Black Walnut vs Kentucky Coffeetree - TreeTime.ca

Black Walnut vs Kentucky Coffeetree

Gymnocladus dioicus

Juglans nigra

NOT AVAILABLE THIS SEASON - MIGHT RETURN

NOT AVAILABLE THIS SEASON - MIGHT RETURN

Kentucky Coffeetree
Black Walnut

The Kentucky Coffeetree has the largest leaves of any native tree in North America! In the summer, its large green canopy provides shade. While in the winter, its leathery bean pods act as a decorative element against the sky as they rattle in the wind. Beautiful year-round, this tree is an elegant addition to any landscape.

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.

Kentucky Coffeetree Quick Facts

Black Walnut Quick Facts

Zone: 3a
Zone: 3a
Height: 21 m (70 ft)
Height: 14 m (45 ft)
Spread: 15 m (50 ft)
Spread: 9 m (30 ft)
Light: full sun
Light: partial shade, full sun
Moisture: dry, normal
Moisture: dry, normal
Growth rate: medium
Growth rate: slow
Life span: long
Life span: long
Suckering: high
Suckering: low

Toxicity: Uncooked pods are toxic to humans

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


Native to: ON
Native to: ON
Other Names: coffeetree
Other Names: american walnut