Eriogonum sphaerocephalum, commonly known as Rock Buckwheat or Round-headed Desert Buckwheat, is a perennial herb native to the Great Basin and surrounding areas of the western United States, including the sagebrush steppe, rocky outcrops, and desert flats. It is found at elevations between 2,000 and 7,000 feet in states such as Washington, Oregon, Idaho, northern California, and northern Nevada. Typically, this plant grows up to 20 inches in both height and width, with a woody base (caudex) and erect flowering stems. The foliage is covered in a dense woolly mat, and the plant produces clusters of yellow flowers that resemble small spheres, blooming from late spring to early fall.

Rock Buckwheat is valued for its drought tolerance and ability to thrive in poor, rocky soils, making it an excellent choice for xeriscaping and rock gardens. Its showy yellow flowers attract pollinators such as bees and butterflies, adding ecological value to the garden. In cultivation, it requires minimal maintenance, needing only full sun exposure and well-drained soils. It is not commonly affected by diseases or pests, but overwatering can lead to root rot. Rock Buckwheat is also used in restoration projects due to its adaptability to harsh conditions.CC BY-SA 4.0