Mammillaria compressa - Mother of hundreds cactus

Mammillaria compressa, nicknamed "Mother of Hundreds", is a globular then cylindrical cactus that, over time, forms large colonies. Native to central Mexico, it displays a dark blue-green epidermis, woolly at the top. In spring, it bears small bell-shaped flowers, ranging from pale pink to purple, forming an attractive floral crown. With slightly faster growth than other species in the genus, it forms quite decorative dense clumps.

Belonging to the Cactaceae family, Mammillaria compressa has the botanical synonyms Cactus compressus, Mammillaria angularis var. compressa, Mammillaria angularis f. compressa, Neomammillaria compressa. This species is native to the regions of Guanajuato, Querétaro, Hidalgo, Tamaulipas, and San Luis Potosí in Mexico. The plant features globular to slightly cylindrical stems, measuring between 15 and 20 cm in height and 5 to 8 cm in diameter. The areoles, located at the tip of rhombic or sometimes tetragonous tubercles, are covered in white wool, characteristic of the Mammillaria genus. The radial spines, numbering 4 to 6, are straight, chalky white to brownish, and measure between 2 and 7 cm long. Central spines are usually absent. The flowering, typically observed between March and May, takes the form of small campanulate, 1 to 1.5 cm diameter flowers, ranging from pale pink to purple. After flowering, bright red, round fruits may appear, containing small brown seeds. Over time, this cactus forms dense colonies due to basal offsets.

To cultivate Mammillaria compressa indoors, it is recommended to place it near a south-facing window. A well-draining substrate is essential, composed of a cactus mix based on light potting soil, coarse sand, and perlite. Watering should be moderate in spring and summer, ensuring the substrate dries completely between waterings. In autumn and winter, during the dormant period, watering should be significantly reduced to avoid any risk of rot. This cactus prefers temperatures between 18 and 25°C but can occasionally tolerate drops down to 5°C. You can move it outdoors during the warmer months. Applying a cactus-specific fertiliser once a month during the growth period encourages abundant flowering.

In a succulent collection, Mammillaria compressa pairs perfectly with other species of varied shapes and colours. It can be combined with globular cacti such as Echinopsis subdenudata, or sculptural succulents like Echeveria agavoides and Haworthia fasciata. Placed on a cactus tray or in a minimalist terracotta pot, it adds an exotic touch to your interior without requiring much care.