American Aspen
Populus tremuloides
Last reviewed: July 2026
Populus tremuloides is a fast-growing deciduous tree native across much of North America, known for its distinctive trembling leaves and golden fall color. It blooms in April and May with catkins that attract bees.
The USDA PLANTS Database (opens in new tab) does not flag American Aspen as toxic to livestock.
Light
full sun
Water
medium
Size
240"–720" H × 240"–480" W
Bloom
Apr, May
Native to
AZ, CA, CO, CT and 33 more states
Pollinators
bees
Browse plants for this ecoregion
American aspen is a fast-growing native tree known for its shimmering leaves that flutter in the slightest breeze, creating a distinctive rustling sound. This deciduous tree develops smooth, pale bark and brilliant yellow fall color, making it an attractive specimen for larger landscapes.
Growing American Aspen
Grow American Aspen in full sun and medium water. Mature plants reach 240 to 720 inches tall and spread 240 to 480 inches wide. Expect high maintenance to keep it looking intentional in a front yard.
In an HOA neighborhood
American Aspen takes more care to keep looking intentional in a front yard. Maintenance level: high. Consider it for backyard or mid-zone beds rather than the street edge.
Works well in: backyard only.
- Spreads aggressively through root suckers
- Can become messy with frequent leaf and twig drop
- May grow too large for typical residential lots
Wildlife value
Host plant for large sphinx moth, poplar sphinx moth.
The early spring catkins provide nectar for bees and other pollinators. The tree also supports numerous butterfly and moth species as a host plant, while providing nesting sites for birds.
Common questions
- Where is Populus tremuloides native?
- American Aspen is native to a wide range of states from coast to coast, including western states like California, Colorado, and Montana, as well as northeastern states like Maine, Vermont, and New Hampshire.
- When does Populus tremuloides bloom?
- American Aspen blooms in April and May, producing catkins before the leaves emerge in spring.
- What pollinators visit Populus tremuloides?
- Bees are the primary pollinators of American Aspen, visiting the catkins for nectar and pollen during the spring blooming period.
- What growing conditions does Populus tremuloides prefer?
- American Aspen grows best in full sun to partial sun and adapts to various moisture levels from wet to dry soils, making it quite versatile in different environments.
- Is American Aspen toxic to livestock?
- The USDA PLANTS Database does not flag American Aspen as toxic to livestock.
- Is American Aspen HOA-friendly?
- American Aspen takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.
Native range data from the USDA PLANTS Database and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
Ready to grow American Aspen? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.
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