Mammillaria polythele cv. Stachellos


Mammillaria polythele ‘Inermis’


Mammillaria polythele cv. Stachellos, a cultivar of Mammillaria polythele, is native to the arid and semi-arid regions of Mexico. This cactus thrives in environments that mimic its natural habitat, characterized by well-draining soils and minimal water. The area’s natural climate offers a blend of warm, dry, and sometimes cool periods, with limited rainfall primarily occurring in short bursts. These conditions have shaped the unique adaptive features of this cactus, making it well-suited for cultivation in similar climates globally.


The Mammillaria polythele cv. Stachellos is a distinctive cultivar, primarily characterized by its lack of spines, which differentiates it from the typical Mammillaria polythele species. This plant forms a spherical to slightly elongated shape, reaching a height and diameter of about 10-15 cm. The body is covered in tubercles, small, rounded protrusions, giving it a textured appearance. The absence of spines on these tubercles is a unique feature, presenting a smoother look compared to its spiny counterparts. The cactus produces rings of small, cream to pale pink flowers near the crown, adding a delicate beauty to its appearance. These blooms typically appear in late spring to early summer, depending on the growing conditions.


Cultivating Mammillaria polythele cv. Stachellos requires replicating its native habitat conditions. It prefers a well-draining soil mix, often a combination of standard cactus mix with added perlite or pumice to enhance drainage. This cactus should be placed in a location that receives bright, indirect light; direct sunlight can be tolerated but should be introduced gradually to prevent sunburn. Watering should be moderate during the growing season (spring and summer), allowing the soil to dry out completely between waterings. In winter, reduce watering significantly to mimic the dry season of its natural habitat. This cultivar is not frost-tolerant, so it should be protected from temperatures below 5°C . Regular repotting, typically every 2-3 years, is beneficial for maintaining a healthy root system and promoting growth.


Propagation of Mammillaria polythele cv. Stachellos is commonly achieved through seeds or offsets. Offsets, small clones that grow around the base of the parent plant, can be carefully removed and potted individually. They should be allowed to dry for a day or two to callous over before planting in a well-draining cactus mix. Seed propagation requires patience, as it can take several years for seedlings to reach a significant size. Seeds should be sown in a sandy, well-draining mix, lightly covered, and kept moist in a warm, bright environment until germination.


The Mammillaria polythele cv. Stachellos is particularly notable for its spineless form, which is a rare characteristic in cacti. This feature makes it an attractive and safe option for indoor cultivation, where traditional spiny cacti might pose a risk. Its unique appearance has made it a favorite among cactus enthusiasts and collectors. Additionally, the contrast between its smooth, spineless surface and the typical spiny appearance of most cacti makes it a fascinating study in plant adaptation and variation within species.

Official Web Site:

Italian Blog:

Read our advice

Recent Posts

Start typing and press Enter to search