View Article Sources Bottorff, Jim. "What good is a cottonwood tree?" Forest Stewardship Notes. "Cottonwood, Poplar, and Aspen (Populus)." Common Trees of the Pacific Northwest, Oregon State ...

The acorn of an oak tree, for example, is a seed—but completely different from a maple's samara. Believe it or not, twigs can be used to identify a tree as well. This is a good thing because ...

It seems fitting that Nebraska, which has chosen the cottonwood as its state tree, would have the largest one in the United States. The Nebraska Forest Service learned this week that a towering ...