Poplar White is a term used to describe two species of trees, the ABELE (also known as the silver poplar) and the ASPEN. The ABELE is a deciduous tree native to Europe and western Asia, and is characterized by its white bark and yellow-green leaves. The ASPEN is a deciduous tree native to North America, and is characterized by its white bark and heart-shaped leaves. Both species are popular for their ornamental value and are often used in landscaping.