Cirsium ochrocentrum, commonly known as yellowspine thistle, is a perennial herb native to the Great Plains and desert regions of the western United States and northern Mexico. It typically grows up to 3 feet tall and is characterized by white woolly stems and deeply lobed, spiny leaves. The inflorescence features spiny-tipped flower heads with disc florets that can be white, pink, or lavender, blooming from late spring to early fall. This thistle is often found in grasslands, prairies, and desert scrub environments, where it is adapted to dry, open spaces with plenty of sunlight.

Yellowspine thistle is known for its striking appearance and is sometimes used in wildflower gardens for its unique texture and form. However, it is also considered a noxious weed in some areas due to its aggressive nature and ability to outcompete native vegetation. In cultivation, it requires minimal water once established and thrives in well-drained soils under full sun. The Zuni people have historically used infusions of yellowspine thistle for medicinal purposes. Gardeners should be aware that this plant can spread rapidly and may require management to prevent unwanted proliferation.CC BY-SA 4.0