A Cistus favorite. A prolific bloomer, thought to be a wild hybrid between O. fragilis and O. polyacantha, this prickly pear--a Claude Barr selection found near the city of Smithwick, South Dakota--produces very large yellow flowers with red centers. Height to 4-6" and width to 2-3' over time. Cold hardy to USDA zone 5. Excellent rock garden specimen.

SMITHWICK PRICKLY PEAR

Cactaceae