“The purpose of this Technical Note is to provide information about roses in the Inland Pacific Northwest, which is comprised of eastern Washington, eastern Oregon, and northern Idaho. Keys and comparison charts are provided for identification, detailed information is presented for each species, and methods for control are outlined for invasive species.”
ftp://ftp-fc.sc.egov.usda.gov/ID/programs/technotes/tn61_roses.pdf
And the other half of the story. That’s cattle country and I doubt there was a problem before banned from chewing up the underbrush and such.
Neil
I used to live in Moscow, ID, which is 8 miles east of Pullman, WA, and both towns are littered with Rosa rubiginosa. Out in the wild within the Palouse and the state forest heading into Montana, Rosa foetida and Rosa foetida bicolor are prominent everywhere.
Homestead invasions, lol.