Populus tremuloides
Quaking Aspen
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Quaking Aspen (Populus tremuloides) - Description
Populus tremuloides is a deciduous tree native to cooler areas of North America, one of several species referred to by the common name Aspen. It is commonly called quaking aspen, trembling aspen, American aspen, Quakies, mountain or golden aspen, trembling poplar, white poplar, popple, and even more names. The trees have tall trunks, up to 25 m (82 ft) tall, with smooth pale bark, scarred with black.
Quaking Aspen (Populus tremuloides) - Blooming
Male and female catkins on separate trees borne in late winter or spring before the leaves.
Quaking Aspen (Populus tremuloides) - Growth
Fast-growing deciduous trees, native to northern temperate zone. White or gray park, and leaves that flutter gracefully in the wind. Invasive root systems, so avoid growing within 100' of a building. Populus does best in full sun. P. alba and P. x canescens flourish in coastal regions. Populus works best as a windbreak.
Quaking Aspen (Populus tremuloides) - Planting
Propagate from hardwood cuttings in winter. Can also propagate from suckers in fall or late winter.
Quaking Aspen (Populus tremuloides) - Pest
Leaf miners, borers, scale insects, caterpillars, and leaf hoppers. Populus is also prone to canker, butt rot, powdery mildew, root rot, dieback, leaf blister, white rot, rust, and crown gall.
Quaking Aspen (Populus tremuloides) - Interesting facts
The name Cottonwood comes from the fluffy white seeds produced by the female catkins. (Catkins are the specific term for a type of inflorescence of flowers that is found in the Populus genus. The leaf buds and unfolding leaves are often aromatic. Some of the most massive living things on earth are colonies of poplar that spread through root suckers, one in Utah is nick-named "Pando" and is an estimated at well over 6,000 tons.
Quaking Aspen (Populus tremuloides) - Soil and irrigation
Moist, but well-drained soils that are deep and rich. Does not tolerate over-watering. P. alba and P. x canescens can withstand dry conditions.
