(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).
This is one of the easier species to grow, it is an easy bloomer and don't requires any special treatment. It has consistently clean spination whether grown indoors or out but the plants are the most beautiful when cultivated in the full sun that encourage the heaviest spine formation. Regular water in summer. Keep dry in winter. Frost tolerance: 4° C.
Mammillaria bombycina is a popular solitary or clustering species, some clones cluster aggressively and can form 50-90 cm wide, gorgeous mounds as they matures. It is one of the most popular and beautiful species that will produce clumps, as a washing up bowl. It combines clean, glassy white radial spines with hooked reddish-brown centrals. The spines are quite sticking. This plant will produce several complete circles of contrasting light carmine flowers every year.
Some of the information in this description has been found at desert-tropicals.com, llifle.com and cactus-art.biz