How to Grow and Care for Mammillaria Cactus Plants Mammillaria cactus plants, otherwise known as pincushions, are succulents that come in many different varieties, which often grow to different heights and shapes. Regardless of the variety, they all require similar care to ensure they thrive in their surroundings. Mammillaria cactus plants can live indoors or … Continue reading How to Grow and Care for Mammillaria Cactus