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Green Alder vs Arrowwood

Alnus crispa

Viburnum dentatum

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Green Alder
Arrowwood

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.

Arrowwood is a cold hardy, reliable, and vigorous shrub that can easily grow on difficult sites. Featuring an upright, rounded, and multi-stemmed form, this shrub produces creamy white flowers against a backdrop of deep green, serrated foliage.

The flowers give way to dark, blue berries that will attract wildlife to your yard. Depending on the plant, Arrowwood's striking fall color can range from yellow, red to reddish-purple.

Many use Arrowwood for naturalization or mass planting projects but, more commonly, you'll see this simple yet elegant shrub as a shrub border or planted on its own.

GREEN ALDER QUICK FACTS

ARROWWOOD QUICK FACTS

Zone: 1a
Zone: 2a
Height: 7 m (23 ft)
Height: 1.2 m (4 ft)
Spread: 3 m (10 ft)
Spread: 2.4 m (8 ft)
Moisture: any
Moisture: normal, wet
Light: any
Light: partial shade, full sun
Fuzz/fluff: yes
Catkins: yes
Growth rate: fast
Growth rate: medium
Life span: short
Life span: medium
Suckering: high
Suckering: high

In row spacing: 0.9 m (3 ft)

Between row spacing: 5 m (16 ft)



Other Names: mountain alder, sitka alder