Chamaelobivia rose quartz
(This plant comes in a 3.5" 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).
Chamaelobivia are very popular hybrids that develop really amazing flowers of different colors on the original "peanut" body and many of these hybrids have cultivar names. This plants soon form spectacular clumps with 20-30 (or more) flowers at a time, and are quite a sight.
Most of these hybrids can grow outside all year and can take a lot of sun. Hardy from -4° to -12° C, depending on clone.
Cultivation and propagation: The Chamaelobiva hybrids are very easy to grow, and are the ideal plants for beginners. The parents of all Chamelobivia come from mountainous areas, so they like bright light, cool and dry conditions in the winter. They flower freely indoors if conditions suit them.
Growth rate: Chamaelobivia is a relatively fast growing and easily flowering species that will make large clumps given the best conditions.
Light: It requires full sun or light shade and careful watering to keep plant compact, and maintain strong and dense spines and allow the pot to dry out between waterings.
Watering: Keep dry in winter at a minimum temperature of 0°C. The plants can be placed outdoors in April, but protected from rain and direct sunlight. Water them thoroughly when placed out, and again in two weeks, and again in one week. After one month the plants are ready to be placed out in full sun and full rain for the summer. During dry spells the collection is watered once a week, during hot dry spells, twice a week.
Hardiness: It is reputedly resistant to frost if kept on the dry side prior to, and during, cold weather and requires a winter rest period (hardy to -7° C, or less for short periods).
Some of the information in this description has been found at desert-tropicals.com, llifle.com and cactus-art.biz