Mammillaria gigantea

Here is the picture of modest blooms of Mammillaria gigantea. The plant develops large thick stem - my plant is about 6 inches thick now and probably will grow yet thicker. Black spines and white puffs in neat spiral arrangement  make a pretty view. Small cream flowers are easily lost on the plant, but I still like them.
Mammillaria gigantea responds well to common cactus culture. It comes from large area in central Mexico and not at all rare in colections, just not a very popular plant. It nicely develops when exposed to full sun and heat in my greenhouse. As it comes from higher elevations of about 2000m, it is moderately frost hardy. That usually means night frost to about -5C with warm days is tolerated with no negative effects on the plant.