 |
|
Mature Height
|
30 to 40 feet |
|
Mature Spread
|
25 to 30 feet |
|
Soil Type
|
Widely adaptable |
|
Moisture
|
Widely adaptable |
|
Mature Form
|
Rounded |
|
Growth Rate
|
Fast |
|
Sun Exposure
|
Full sun |
|
Flower Color
|
N/A |
|
Fall Color
|
N/A |
|
Foliage Color
|
Dark Green |
|
Zones
|
4-7 |
|
Price: 26.95
The Black Alder, Alnus glutinosa, is a rapid
growing European native that thrives in truly wet soil.
The grayish brown bark is complemented by nutlets that
mature in October and persist in pistillate catkins over
winter.
Black Alder is a good choice where a large windbreak is
needed, clumps have 2 or more stems. The Black Alder is
a hardy tree, surviving northern winters well, though it
does better in wet sites and can be short lived if grown
in dry, stressful sites. The Alder is one of the few
tree varieties that convert nitrogen from the soil
atmosphere enabling it to grow and prosper even in
adverse conditions.
The Black Alder needs plenty of moisture to get
established and will grow in heavily compacted soil if a
moderate amount of water is available. The four-inch
long leaves are dark green on the top and very light on
the bottom. Greenish-yellow catkins with numerous tiny
flowers are displayed in early spring before leaves
appear.
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