UW-Led Institute Releases Films Highlighting Invasive Grass Management in Carbon, Sublette Counties
Published May 05, 2026

Troy Fieseler, a Wyoming Game and Fish Department terrestrial habitat biologist (left), and Julie Kraft, Sublette County Weed and Pest District supervisor, discuss cheatgrass management at Boulder Lake outside Pinedale in August 2024. (UW Photo)
The University of Wyoming’s Institute for Managing Annual Grasses Invading Natural
Ecosystems (IMAGINE) has released two short films highlighting cheatgrass management
efforts in Carbon and Sublette counties.
These films are the latest installments in an ongoing seven-part series highlighting
collaborative efforts to “defend the core” from invasive annual grasses that include
cheatgrass, medusahead and ventenata.
Invasive annual grasses are a leading cause of land degradation in the sagebrush biome,
suppressing native plant communities, fueling wildfires and reducing forage availability
for livestock and wildlife.
IMAGINE works with local, state and regional partners to prevent and manage the spread
of these plants through scientific research, outreach education and the development
of practical resources for land managers and landowners.
The institute’s new educational film series shares successes, challenges and insights
from regional collaborators involved in invasive grass management. Contributors include
university researchers, county weed and pest districts, private landowners, government
agencies and conservation groups.
The first film, “Defend Your Core: An Invasive Annual Grasses Story,” introduces viewers
to the urgent and widespread challenges posed by invasive annual grass infestation
-- then offers solutions, presenting new management and treatment options.
Subsequent films highlight site-specific efforts in Wyoming, Nevada, Colorado and
Idaho, starting in Wyoming’s Carbon and Sublette counties. All episodes can be viewed
at www.invasivegrasses.com/films.
In the second film, “Cheatgrass in Carbon County: Everything to Gain and Everything
to Lose,” Reese Irvine, Carbon County Weed and Pest District supervisor, describes
monitoring efforts and targeted herbicide treatments he has helped implement. He is
joined by colleagues Katie Cheesbrough, executive director of the Wyoming Wild Sheep
Foundation, and Chris Otto, fire management specialist with the Bureau of Land Management.
“We are losing more acres of sagebrush to cheatgrass every year than to any other
cause,” Irvine says. “Wyoming is in a unique spot where we have everything to gain
and also everything to lose if we do nothing.”
Like Irvine, Sublette County Weed and Pest Supervisor Julie Kraft has helped lead
ongoing invasive grass management efforts in her county. IMAGINE’s third film, “Cheatgrass
Control in Sublette County: Safeguarding Our Lands for the Future” chronicles those
efforts.
Fifteen years of monitoring data offer promising evidence for the efficacy of long-term
collaborative approaches that “work across fences,” bringing together ranchers, scientists,
oil and gas companies, government agencies and nongovernmental organizations.
“You’ve got to start someplace,” Kraft notes in the film. “The results we’ve seen
and the difference we’ve made on the habitat have been very rewarding.”
Funding partners for the Sublette and Carbon County films include the Bureau of Land
Management, U.S. Fish and Wildlife Service, Intermountain West Joint Venture, National
Park Service, Natural Resources Conservation Service’s Working Lands for Wildlife
and the Watt Foundation.
Collaborators include the Carbon County Weed and Pest District, Sublette County Weed
and Pest District, Wyoming Game and Fish Department and Wyoming Wild Sheep Foundation.
Films featuring invasive annual grass management efforts in Elko, Nev.; Gunnison,
Colo.; and Craters of the Moon National Monument and Preserve in Idaho will be released
later this year.
To learn more about IMAGINE and view the latest episodes of the film series, visit www.invasivegrasses.com.
