Native to San Luis Potosi, Mexico, is a soft-bodied globe cactus that is densely covered with white hairlike radial spines, giving the appearance of woolly “snowballs”. Globular stems are usually to 3″ to 4″ in diameter, with cinnamon-colored hooked central spines and dense white hairlike radials, forming clusters readily. Flowers are creamy yellow with a pinkish midstripe, profusely appearing in rings for many months. Flowers are followed by attractive long tubular bright pink “fruits” which contain the seed. As this plant normally grows on rocky inclines, it requires extra drainage, such as can be achieved with the addition of more pumice or perlite to the soil mix. For this reason, it is best to water this plant thoroughly, but water a bit less frequently than other cacti. Water with caution in winter, as the plant can lose its roots if the soil stays cold and wet for extended periods. Refrain from watering on overcast days. Prefers bright light and ample airflow. Protect from frost.