Taxonomy
| Clade | angiosperm |
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| Family | Salicaceae |
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| Genus | Populus |
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| Species | tremuloides |
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| Common Name | quaking aspen, trembling aspen |
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| iTree Code | POTR5 |
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Plant Form
| Form | Tree: narrow canopy, often in clonal groups |
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| Height | 65 feet |
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| Spread | 30 feet |
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| Deciduous | Yes |
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Identification Description
| Foliage | broadly ovate (nearly circular) shape, 1.5 - 3" in long/wide, serrated (toothed) edge, flat leaf stem (petiole); distinctive "trembling" in wind |
Leaf Type
 |
Simple |
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| Bark | smooth white or green when young, develops dark gray ridges & furrows with age |
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| Bud | terminal bud small pointed with obvious overlapping scales (imbricate), shiny, red-brown |
Bud Arrangement
|
Alternate |
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| Twig | slender, current year red/brown, then light gray |
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| Flower | long “fluffy” gray/white catkins, with red & green; male and female on separate trees (dioecious) |
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| Fruit | oval seed capsule, very small |
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| Fall Color | yellow |
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Site Characteristics
| USDA Zones
|
pH Levels | Salt Tolerance |
| Min | 1a |
Min | 4.3 |
Soil | Moderate |
| Max | 6b |
Max | 9.0 |
Spray | Moderate |
| Shade Tolerance | Drought Tolerance | Allelopathy |
| Intolerant |
Intolerant |
Yes |
Species Status
| Nebraska Native |
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| U.S. Native |
|
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| Region of Origin | United States, Canada |
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| More Information | Visit External Site |
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