Free Shipping   |   Choose your own Shipping Date   |   Our Guarantee   |   Volume Discounts   |   How to Order

 
 
 

Green Alder vs Black Walnut

Alnus crispa

Juglans nigra

SAVE UP TO 22%

SOLD OUT

Green Alder
Black Walnut

Green Alder is a cold hardy, native shrub. It is often planted on infertile sites so it can fix nitrogen from the air and improve the soil quality.

Green Alder is known for its smooth grey bark and attractive shiny green leaves; it is commonly used in reclamation.

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.

GREEN ALDER QUICK FACTS

BLACK WALNUT QUICK FACTS

Lowest Price: $3.49 - SAVE UP TO 22%
Zone: 1a
Zone: 3a
Height: 7 m (23 ft)
Height: 14 m (45 ft)
Spread: 3 m (10 ft)
Spread: 9 m (30 ft)
Moisture: any
Moisture: dry, normal
Light: any
Light: partial shade, full sun
Fuzz/fluff: yes
Catkins: yes
Growth rate: fast
Growth rate: slow
Life span: 50 years
Life span: long
Maintenance: low
Suckering: high
Suckering: low
Pollution tolerance: medium
Pollution tolerance: high

In row spacing: 0.9 m (3 ft)

Between row spacing: 5 m (16 ft)



Other Names: mountain alder, sitka alder
Other Names: american walnut


Ships To Canada: yes
Ships to USA: no
Ships To Canada: yes
Ships to USA: yes