European Mountain Ash vs Black Walnut - TreeTime.ca

European Mountain Ash vs Black Walnut

Juglans nigra

Sorbus aucuparia

NOT AVAILABLE THIS SEASON - MIGHT RETURN

NOT AVAILABLE THIS SEASON - MIGHT RETURN

Black Walnut
European Mountain Ash

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.

European Mountain Ash is an attractive, ornamental tree. This medium-sized tree produces tiny white-yellow flowers in the spring and decorative clusters of small red/orange berries in the summer. Its bitter fruit is often used to make Rowan Jelly, is a traditional garnish for wild game and venison. Ideal for residential lots, European Mountain Ash will attracts birds to your property.

Black Walnut Quick Facts

European Mountain Ash Quick Facts

Zone: 3a
Zone: 2a
Height: 14 m (45 ft)
Height: 15 m (49 ft)
Spread: 9 m (30 ft)
Spread: 5 m (16 ft)
Light: partial shade, full sun
Light: partial shade, full sun
Moisture: dry, normal
Moisture: normal
Growth rate: slow
Growth rate: fast
Life span: long
Life span: medium
Suckering: low
Suckering: none


Fall colour: reddish-orange
Flowers: small white flowers in clusters
Berries: bunches of berries
Nuts: corrugated nut with edible meat
Seeds: located within the fruit
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


Other Names: american walnut
Other Names: quickbeam, rowan