Quaking Aspen is a native deciduous tree with a narrow rounded crown noted for its beautiful white bark and excellent fall color. Its bark is smooth and greenish white when young and becomes chalky white with black patching. The nearly round glossy toothed foliage turns brilliant golden yellow in fall. Non-showy catkins bloom in spring. Grows best in full sun and rich, consistently moist well-drained soils. Sensitive to air pollutants, heat, and humidity.

Type:	Tree
Height:	20' - 50'
Spread:	10' - 30’
Spacing:	20’
USDA Hardiness Zone:	1 - 7
Culture:	Full Sun, Part Sun
Bloom Color:	Green
Season of Interest:	Fall, Year-Round

MAINTENANCE NEEDS: High Maintenance. Aspen are susceptible to a large number of diseases and prone to premature leaf droppage when stressed. Susceptible to dieback, leaf spots, rusts, powdery mildew and cankers. Common pests include caterpillars, borers, aphids and scale.

LANDSCAPE USES: Accents or Group Plantings, Borders, Woodland Gardens, Wildlife Garden, Naturalized Areas, and Shade Tree.

COMPANION PLANTS: Creeping Phlox, Yew, Dwarf Lilac

IMAGES: Daniel Dumais, 2005-09-16 MEL 0 PET (02) DDumais, CC BY-SA 4.0, (2) Photo by James St. John, Populus tremuloides (quaking aspen) (Rocky Mountains National Park, Colorado, USA) 6, (3) Photo by Zion National Park, Quaking Aspen, (4) Photo by Bernard Spragg. NZ, The Aspens Fish Creek Calgary, (5) Photo by Mitch Barrie, Lundy Lake overnight

*As plants have ranges in appearance they may not appear as the images shown.

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