An environmental advocacy group is asking the federal government to extend Endangered Species Act protections to two native wildflowers with deep ties to the Palouse region of Idaho and Washington, citing habitat loss driven largely by agricultural conversion over the past century.
The Center for Biological Diversity filed a petition with the U.S. Fish and Wildlife Service seeking to list rough goldenweed and Palouse goldenweed as protected species. Both plants are native to the bunchgrass prairies of the Pacific Northwest — a landscape that has been dramatically reduced over generations of farming activity across the region.
Habitat Reduced to a Fraction of Its Former Range
Of the two species, Palouse goldenweed faces the more acute situation. Its native prairie habitat has been reduced to an estimated 0.1 percent of its historic range, with most of what remains clinging to steep hillsides or rocky outcroppings that proved too difficult for farm equipment to work. Rough goldenweed is found primarily south of the Clearwater River across portions of Washington, Idaho, and Oregon.
Gwendolyn McManus, a representative with the Center for Biological Diversity, noted that the geography of these plants tells the story of land use in the Palouse. “They’re only found in the bunchgrass prairies of the Pacific Northwest, most of which has been lost because it was converted to agriculture,” she said.
Local botanists brought both wildflowers to the Center’s attention, a sign that regional knowledge is playing a role in shaping national conservation conversations. The plants are also ecologically functional — they provide forage for pollinating insects and help aerate soil, making them contributors to the broader health of native prairie systems.
Invasive Species Add to Pressure on Native Plants
Beyond agricultural conversion, the two wildflowers face ongoing pressure from invasive plant species. Cheatgrass and Russian thistle — both familiar nuisances to anyone who spends time outdoors in the inland Northwest — are identified as major threats to the remaining native plant populations. McManus pointed out that the spread of invasive species is often accelerated by human activity in surprising ways. “One of the most common ways that invasive plant species are introduced into new habitats is on people’s hiking boots,” she said.
That observation carries practical weight for outdoor enthusiasts and landowners in Latah County, where the Palouse prairie landscape is both an agricultural backbone and a point of local identity. Simple habits like brushing off footwear before and after hikes on native-grass terrain can slow the spread of invasive plants that crowd out species like goldenweed.
What an ESA Listing Would Mean Locally
If the U.S. Fish and Wildlife Service moves forward with listing either or both species, the practical effects would be felt gradually. Federal endangered species designations add a required layer of review to public land management decisions and road or infrastructure projects within the species’ range. Private agricultural land would not be automatically restricted, though federal programs touching that land — such as crop insurance or conservation payments — could eventually incorporate the listing.
The timeline for a decision is lengthy. Under the current regulatory process, a species listing can take more than a decade from petition to final determination. That means any formal protections for rough goldenweed or Palouse goldenweed remain years away at a minimum, and are far from guaranteed.
For residents of the Moscow and Pullman corridor, the petition is a reminder that the rolling hills and remnant prairies of the Palouse are home to plant communities found nowhere else in the world. Whether the federal government ultimately acts on the petition or not, the push highlights how much of the original Palouse ecosystem has already been transformed — and how little of it remains in anything close to its native state.
What Comes Next
The U.S. Fish and Wildlife Service will review the Center for Biological Diversity’s petition and determine whether it presents enough evidence to warrant a formal species status review. That initial finding typically comes within 90 days of submission. If the agency agrees a review is warranted, a multi-year scientific assessment follows before any listing decision is made. Landowners, county governments, and agricultural interests in Latah County and across the Palouse region will have opportunities to provide public comment during that process. For more Idaho natural resources and environmental coverage, visit Idaho News.