These quick-growing trees are commonly known as Alders. They are natives of Europe, North America and Asia.
Alders grow well in moist soil near ponds and other wet ground.
Its glossy green leaves grow 2 to 4 inches across. It has light grayish-white bark. Alders produce catkins of yellowish-green flowers. Male and female flowers are produced on the same tree in the spring. The male catkins are 2 to 6 inches in length.