Copiapoa tenuissima grafted
(This plant comes in a 3.5 inch pot. You will receive a very similar plant to the one in the picture. It may or may not be blooming at the time of your purchase. The plant is shipped in its pot to prevent any damage to the roots).
This is a grafted version of the Copiapoa tenuissima.
Blooming season: Spring and summer.
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 (weekly during summertime, if the weather is sunny enough). Less or no water during cold winter months, or when night temperatures remain below 10° to prevent root loss. It is sensitive to overwatering (rot prone).
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).
Some of the information in this description has been found at desert-tropicals.com, llifle.com and cactus-art.biz