Lomatium cous, commonly known as cous biscuitroot, is a perennial herb that is native to the sagebrush steppe and grasslands of the Intermountain West, particularly the Columbia Plateau and Great Basin regions. It is adapted to arid conditions and often found in open, well-drained soils. This plant typically grows to a height of 10-50 cm and features compound leaves that are finely dissected, giving them a feathery appearance. The small, yellow flowers bloom in umbels from April to June and are not particularly showy, but they do attract pollinators. The plant’s deep taproot is notable for its historical use as a food source by indigenous tribes.

Cous biscuitroot is valued for its drought tolerance and can be used in xeriscaping or naturalized plantings in arid regions. It requires minimal maintenance once established and thrives in full sun with well-drained soil. While not commonly found in cultivation, it has potential for use in restoration projects or as a component of ethnobotanical gardens. Gardeners should be aware that it may not compete well with aggressive plants and can be susceptible to root rot in poorly drained soils.CC BY-SA 4.0