Foliage
Bark
Bud
Twig
Flower
Fruit
Taxonomy
| Family | Betulaceae |
|---|---|
| Genus | Alnus |
| Species | incana |
| Common Name | speckled alder |
| iTree Code | ALIN2 |
Plant Form
| Form | Tree: pyramidal to conical crown |
|---|---|
| Height | 60 feet |
| Spread | 30 feet |
| Deciduous | Yes |
Identification Description
| Foliage | green, oval coming to sharp point with serrate to doubly serrate edges | Leaf Type
 |
Simple |
|---|---|---|---|
| Needles | 0 | ||
| Bark | brown/gray with lenticels | ||
| Bud | red/brown elliptic or conical with non-overlapping scales (valvate) | Bud Arrangement
|
Alternate |
| Twig | slender, brown/gray with lenticels | ||
| Flower | male- catkins slender red/brown then green; female- catkins purple/red smaller | ||
| Fruit | cone with small flat, winged, circular samaras | ||
| Fall Color | yellow, brown | ||
Site Characteristics
| USDA Zones
|
pH Levels | Salt Tolerance | |||
|---|---|---|---|---|---|
| Min | 2a | Min | 4.8 | Soil | Intolerant |
| Max | 6a | Max | 7.6 | Spray | Intolerant |
| Shade Tolerance | Drought Tolerance | Allelopathy |
|---|---|---|
| Intermediate | Intolerant | No |
Species Status
| Nebraska Native | |
|---|---|
| U.S. Native |
|
| Region of Origin | United States, Canada |
| More Information | Visit External Site |