Cylindropuntia bigelovii
Columnar cactus native to the Sonora Desert with stems densely covered with clustered spines. It produces yellow spring flowers and is famous for its fuzzy appearance resembling a teddy bear.
Requires full sun and very well-drained soil. Sporadic watering in summer, no watering in winter. Avoid temperatures below 5°C. Propagation by cuttings in spring.