(This plant comes in a 2" 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).
Origin and habitat: Ferocactus macrodiscus is endemic to Mexico.
Cultivation: Slow growing to start, but it does well under cultivation. Grow it in full sun throughout the year. In winter keep completely dry at 10°C, but it can tolerate sporadic light frost. Unlike other Ferocacti that flowers only as large adult, Ferocactus macrodiscus will flower at a reasonable size in a small pot in a glasshouse
Some of the information in this description has been found at desert-tropicals.com, llifle.com and cactus-art.biz