Cottonwood trees are large deciduous trees belonging to the genus Populus. They are commonly found in North America, especially near rivers and wetlands. These trees can grow up to 100 feet tall and have broad, triangular leaves that turn bright yellow in the fall. Cottonwoods are known for their fast growth and ability to thrive in various soil types. The name "cottonwood" comes from the fluffy, white seeds they produce, which resemble cotton. These seeds are dispersed by the wind, allowing the trees to spread easily. Cottonwoods provide important habitats for wildlife and are often used in landscaping and erosion control along waterways.