• Red cliffs descend into the water of Bighorn Canyon

    Bighorn Canyon

    National Recreation Area MT,WY

Cottonwood Trees

Cottonwood trees line the banks of the Bighorn River
Cottonwood trees line the banks of the Bighorn River

The plains cottonwood, (Populus deltoides), dominates the stream banks along the Bighorn River below the mouth of Bighorn Canyon.

"Cotton" Floating On The Breeze
These poplars, members of the willow family, reach heights of 60 to 90 feet. The thick, grayish bark is deeply furrowed. In the spring, the female cottonwoods flower in drooping, sticky catkins and produce seeds covered with silky hairs, the “cotton” seen floating on the breeze.

The leaves are triangular to heart shaped with coarsely toothed margins. Their leaf stems are flattened lengthwise so the leaves flutter in the breeze like those of the related quaking aspen. The leaves turn yellow in the fall providing most of the autumn color in the valley.

In the western United States, cottonwood establishment is flood-driven. Flooding removes competing vegetation, deposits fresh sediment which provide essential seed germination sites, and temporarily raises the water table. Trees established by these periodic episodes tend to occur along stream channels. The cottonwood has many diverse uses including:

  • shelter
  • timber
  • firewood
  • forage
  • wildlife habitat.

Did You Know?

View of Abercrombie from Horseshoe Bend boat ramp

There are over 350 Abandoned Mineral land sites recorded in Bighorn Canyon, and even more are being discovered. These sites are the result of a mining boom, caused by the search for uranium in the production of nuclear weapons during the Cold War. Even with research the names of the companies responsible for the test sites have not been found. More...