This is a nice crested plant particularly appreciated by collector for its free blooming habit. It can form large tangled, brain like mounds in few years. Its qualities and ease of cultivation justify its being an old favorite. It is sometime seen as a grafted plant but grows very well on its own roots too. Exposure: They need a good amount of light shade to full sun this help to keep the plants healthy, although slow growth. Watering: Water sparingly from March till October Hardiness: Keep perfectly dry in winter at temperatures from 5 to 15 degrees centigrade. (but it is relatively cold resistant and hardy to -5° C, or possibly colder for short periods) In the rest period no high atmospheric humidity!! (Temperature Zone: USDA 9-11)
Some of the information in this description has been found at desert-tropicals.com, llifle.com and cactus-art.biz
