Alnus incana subsp. rugosa
Common name: Speckled Alder
This native alder tends to be multi-stemmed and is best used in groups in wet areas and flood plains. Branches with small cones and catkins make excellent winter arrangements. This plant fixes nitrogen in the soil that can be used by other plants. This is one tree I definitely recommend buying in #5 containers because of its rapid rate of growth (3-4 feet per year). Alder has limited use as a street tree.
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Plant Details
Plant type
Tree
Soil type
Mesic (Not too Wet Not too Dry), Moist Mesic, Wet
Light exposure
Full Sun
Bloom period
Spring
Urban environment
Harsh Exposure Tolerant, Road-side/Salt Tolerant, Yards that Flood
Habitat
Floodplain, Moist Woods, Savannas, Wetlands
Growth form
Single trunk, Colonizing / Spreading
Growth rate
Fast
Flower color
Yellowish Catkin
Fall color
Yellow
Size
- Mature height
- 15 Feet
- Mature width
- 10 Feet
- Max height
- 30 Feet
- Max width
- 20 Feet