Mammillaria microhelia is a species of plant in the family Cactaceae. It is endemic to Mexico and grows at elevations of 2,000 to 2,600 metres above sea level. Mammillaria microhelia is considered to be Endangered due to its limited range.
Mammillaria microhelia is a particularly attractive small columnar, perennial cactus both solitary or forming clumps and bearing cream or brown spines, discolouring with age. Has creamy-white to purplish flowers in spring. Spines are arranged like the rays of the sun. These stems are cylindrical, medium green, to 15(-25) cm or more high, 3-5(-6) cm in diameter. In good conditions with careful application of water and excellent ventilation Mammillaria microhelia grows without difficulty. It is a slow growing species that rewards the patient grower with a beautiful displays of flowers since from an early age.