Mammillaria schwarzii

Another cactus begins to bloom! This time it's Mammillaria schwarzii.  This plant is very much at risk in it's native habitat due - mostly - to over collection. Such a same, as it has been widely available as a seed grown plant for some 40 years. It's one of our favorites, but it is touchy about overwatering. Provide very good drainage, judicial watering and setting with bright light.