Mammillaria mystax is a species of cactus in the subfamily Cactoideae. It is endemic to the Mexican states of Hidalgo, Oaxaca and central Puebla. Mammillaria mystax is a single stemmed cactus which with age can offset to form loose clumps.The species is common in cultivation and produces a profusion of rose coloured flowers in a ring around the crown of the stem.
Mammillaria Mystax should be watered only when its soil is dry to the touch. It's better to give this cactus too little water rather than too much – being drought-resistant, Mammillaria Mystax does well with little water, but it is very susceptible to root rot caused by standing water.
Soil: M. mystax requires a soil mix that provides root aeration and good drainage, whether grown outdoors or indoors. Use commercial cactus potting mixes or create your own potting mix.