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Green Alder vs Black HawthornAlnus crispa Crataegus douglasii SOLD OUT NOT AVAILABLE THIS SEASON 
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.
Black Hawthorn is a versatile plant that is native to wetlands and other areas with moist soils, but can also tolerate dry soils. This plant can be grown as a short shrub, or a tree reaching 30 feet tall. GREEN ALDER QUICK FACTSBLACK HAWTHORN QUICK FACTS
Zone:
1a
Zone:
3a
Height:
7 m (23 ft)
Height:
8 m (25 ft)
Spread:
3 m (10 ft)
Spread:
5 m (15 ft)
Moisture:
any
Moisture:
any
Light:
any
Light:
partial shade, full sun
Fuzz/fluff:
yes
Catkins:
yes
Fall colour:
yellow to red
Berries:
purplish-black pomes
Flowers:
white
Bark:
brown to gray
Growth rate:
fast
Growth rate:
medium
Life span:
50 years
Life span:
medium
Maintenance:
low
Maintenance:
low
Suckering:
high
Suckering:
medium
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:
Crataegus columbiana, douglas hawthorn, Douglas' thornapple
Ships To Canada:
yes
Ships to USA: no
Ships To Canada:
yes
Ships to USA: no |