Quaking Aspen
Populus tremuloides · Deciduous, Broadleaf, Hardwood
Plant Family
Salicaceae (Willow family)
Tree Category
Shade Tree, Forest Tree, Ornamental
Variety / Cultivar
Species type (Populus tremuloides); no specific cultivar identified
Hardiness Zones
USDA Hardiness Zones 1-7; extremely cold-tolerant.
About This Tree
A medium-sized deciduous tree with a narrow, rounded crown and a columnar trunk. Known for its rapid growth and fluttering leaves that move with the slightest breeze.
Leaf Characteristics
Simple, heart-shaped to nearly round, 1.5-3 inches long. Margin is finely serrated. Dark green above, paler below; turns brilliant gold/yellow in fall. Flattened petioles cause trembling.
Bark Characteristics
Smooth, greenish-white to cream-colored when young, becoming furrowed and darker (grey to black) at the base with maturity. Characteristic black eye-shaped scars.
Growing Information
Origin Region
North America; widest distribution of any native tree on the continent
Growing Season
Leaves emerge in spring (light green), flowers (catkins) appear before leaves, enters dormancy in late autumn after brilliant yellow color change.
Sunlight & Water Needs
Full sun is required (shade intolerant). Prefers moist, well-drained soils but can adapt to various moisture levels; moderate drought tolerance once established.
Mature Size
Typically 20-50 feet tall with a spread of 10-25 feet. Fast growth rate with a relatively short lifespan (50-150 years).
Special Characteristics
Famous for 'trembling' foliage and luminous white bark. Clonal growth via root suckers allows it to form massive, genetically identical groves (colonies).
Wildlife & Ecology
Provides critical habitat and food. Browse for deer and elk; seeds and buds eaten by birds like grouse; bark consumed by beavers and rabbits. Larval host for various butterflies.