Juncus confusus is a species of rush known by the common name Colorado rush. It is native to western North America from British Columbia to northern California to Colorado, where it grows in coniferous forests and wet, grassy areas such as mountain meadows. It is a bunching rhizomatous perennial herb which grows to a maximum height between 30 and 50 centimeters. Its thready leaves grow from the base of the light green stems to about 15 centimeters long.