Ferocactus wislizeni, the fishhook barrel cactus, also called Arizona barrel cactus, candy barrel cactus, and Southwestern barrel cactus, is a species of flowering plant in the cactus family Cactaceae, native to northern Mexico and the southern United States. It is a ball-shaped cactus eventually growing to a cylindrical shape, with spiny ribs and red or yellow flowers in summer.
In urban areas, the Fishhook Barrel is valued as an ornamental plant. It is drought tolerant and good for xeriscaping, and it is also a low-maintenance full-sun plant.