Native host plants include springparsley, balsamroot, big sagebrush, and rabbitbrush. The valley grasshopper has found several introduced weeds to its liking: redstem filaree, flixweed, and downy ...

Cheatgrass, or downy brome, is on Boulder County's list of plant species recommended for removal on county-owned open space. Credit: Michel Langeveld Last month, Boulder County Commissioners approved ...