(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).
Also known as split rock or living stones, this one of a kind interesting looking plant belongs to the Aizoaceae family. The name Argyroderma comes from the Greek "silver skin". The member of this small genus come from the Namaqualand area of South Africa. They need a lot of sun to develop their silver color. Watering them can be tricky. They need little water in summer, and it is better to water them only if they are visibly shriveling. They should be watered only lightly the rest of the year. They can take cool temperature but should not be exposed to frost.
Recommended temperature zone: USDA: 10b-12
Frost tolerance: Hardy to 30°F (-1°C) for very short period
Heat tolerance: Keep cool and shaded in summer
Sun exposure: Light shade
Origin: South Africa (Knersvlakte, Little Namaqualand)
Watering needs: Water minimally in summer, only when the plant starts shriveling. Requires good drainage
Some of the information in this description has been found at desert-tropicals.com, llifle.com and cactus-art.biz