Populus tremuloides (Quaking Aspen) is a species of tree in the family Salicaceae. They are associated with freshwater habitat. They are native to United States, Western North America, Alaska, North America, The Contiguous United States, Eastern North America, Saint-Pierre Et Miquelon, and Canada. They have blue flowers. Flowers are visited by Autumn Meadowhawk, White-throated Sparrow, Bibio pallipes, and Yellow-banded Bumblebee. Individuals can grow to 26.08 m.