(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).
Cultivation and propagation: It is easy to grow, very attractive and regularly shows its beautiful flowers if provided with an adequate winter rest period.
Moisture: It is sensitive to over-watering (rot prone) and needs good drainage. In the winter keep it cool, and absolutely in dry conditions. In the summer keep it well watered when it's hot.
Exposure: Needs full sun. To achieve the best spine density, give these plants lots of sun.
Hardiness: Very cold resistant above -12°C or less for short periods of time. In the summer they need an airy location in bright sun. In mild climate they grow well when planted freely outside in well-drained soil.
Some of the information in this description has been found at desert-tropicals.com, llifle.com and cactus-art.biz