Not only was it the nation's largest cottonwood for many years, it was Arizona's largest known tree of any size, said Ken Morrow, the state coordinator for the national big tree program.

These trees like wet conditions and ... known as the western cottonwood or the Rio Grande cottonwood, occurs in California east to Utah and Arizona and south into northwest Mexico.

PHOENIX — Amid the Arizona heat, researchers are finding Fremont Cottonwood trees can cool themselves down, but their survival depends on consistent water access. The trees essentially sweat ...

Cottonwood trees are emblematic of the American Southwest ... A recently published study co-authored by Northern Arizona University researchers shed new light on how cottonwoods cope with ...

As of last week, the wall project at the San Pedro consisted of pink tape wrapped around 17 cottonwood trees in the riverbed ... and Border Protection in Arizona. Construction will start sometime ...

The new growth is high in protein and minerals. Forestryimages.org provides several images of parts of Eastern cottonwood. The tree is a hardwood and the lineal taxonomy is Magnoliopsida ...

A 105-foot cottonwood tree that was cut out of a Billings backyard last week might have some life left in it. When news of the tree’s demise reached Marty Flanagan, he knew he wanted a piece.