2.5" Mammillaria bombycina "Silken Pincushion"
Native to Mexico. In habitat, this plant typically grows on rocky inclines, where the water quickly drains away from the roots. For this reason, extra drainage is required in cultivation, such as can be achieved with the addition of more pumice or perlite to the soil mix. Prefers bright light, indirect light. Water thoroughly when soil is dry to the touch. Refrain from watering on overcast, gloomy, cold or humid days. Protect from frost.