How to Grow and Care for Perideridia

It is a perennial herb whose upright stems are between 50 cm and 1.2 m tall, with sparse alternate doubly pinnate leaves ending in long tapering leaflets. The inflorescence is a compound umbel of many spherical clusters of small white flowers. The fruits are 3 to 5 mm long with 5 slender ribs.

Perideridia gairdneri is a species of flowering plant in the carrot family known by the common names common yampah and Gardner's yampah. It is native to western North America from southwestern Canada to California to New Mexico, where it grows in many types of habitat. It is a perennial herb which may approach 1.5 meters in maximum height, its slender, erect stem growing from cylindrical tubers measuring up to 8 cm long. Leaves near the base of the plant have blades up to 35 cm long which are divided into many narrow, subdivided lobes. This food root is called cawíitx in Nez Perce , sawítk in Sahaptin and yap in Comanche.

Kellogg's yampah is a herbaceous perennial that thrives in moist, open woodlands. Characterized by its cluster of delicate white flowers atop sturdy, slender stems, it stands out in summer meadows. This plant's finely divided fern-like leaves lend a lacy appearance, while its root has a reputation for a sweet, earthy flavor used in traditional culinary practices.

California yampah, native to California, flourishes in the state's diverse habitats with its distinctive cluster of white to cream flowers atop tall stems. Adapted to the sunny, well-drained conditions of meadows and woodlands, this perennial's slender, divided leaves give it a delicate, feathery appearance. Its carrot-like root hints at its place within the carrot family.

Parish's yampah is a perennial herb standing tall with clusters of white-cream flowers that bloom in late summer. Its fern-like leaves are finely divided, giving it an airy appearance. This native of North American meadows thrives in well-drained soils, its deep taproot adapting well to arid conditions. Distinctive for its umbrella-shaped flower heads, parish's yampah adds a delicate structure to the wild landscape.