Populus Heterophylla, also known as the swamp cottonwood, is a deciduous tree. There are various synonyms that are used for Populus Heterophylla, including Populus Fremontii subsp. Heterophylla, Fremont Cottonwood, and California Cottonwood. These names are often interchangeably used to refer to the same tree species. Populus Heterophylla is typically found in riparian zones and swamps throughout the western United States and northern Mexico. The tree is known for its coarse, gray bark and large, triangular-shaped leaves that vary in size and shape. Additionally, these trees are often used for landscaping and in forestry due to their fast growth and ability to tolerate wet and dry soil conditions.