Mammillaria xaltianguensis subsp. bambusiphila (Repp.) D.R.Hunt 

🌱 Morphology

   Compact, slow-growing cactus, normally solitary for many years, although it can form small groups with age. It develops cylindrical stems up to about 20 cm high and 4–8 cm in diameter, with tubercles arranged in a spiral and bare axils or with a small amount of wool. It has 16–20 fine, white radial spines, with brown tones at the base or apex, and 3–5 sturdier, straight or sometimes hooked central spines, glassy white or pale brown with dark tips.

🌍 Distribution, habitat and family

It is native to the state of Michoacán, in southwestern Mexico, especially the areas of Huacana and Coalcomán, where it has been recorded at altitudes of approximately 800 to 1,200 m. It inhabits warm-climate regions with a marked dry season. The name Mammillaria bambusiphila var. parva was described by Werner Reppenhagen for a smaller form. In Joël Lodé's classification, the current taxonomic reference is Mammillaria xaltianguensis subsp. bambusiphila.

Family: Cactaceae · Subfamily: Cactoideae · Tribe: Cacteae.

❄️ Temperature · USDA Zone 9a

Tolerates minimum temperatures close to −5 °C if well acclimated and the substrate remains dry. For safe cultivation, it is recommended to protect it from prolonged frosts and moisture during cold periods.

☀️ Lighting

It needs plenty of light to maintain compact growth and promote abundant flowering. It benefits from soft morning sun and light protection from the more intense afternoon sun in summer, especially during heatwaves. As a reference, a PAR DLI of approximately 15–25 mol·m⁻²·day⁻¹ is recommended, adjusted to acclimation and the plant's response.

💧 Growth cycle and watering

Its growth occurs mainly during the warm months. It is recommended to water thoroughly when the substrate is completely dry and let it dry out again before the next watering. A very well-draining mix and good root aeration are essential to prevent rot.

Winter dormancy. Reduce watering considerably and keep the substrate dry during the cold period. A cool, dry rest promotes the formation of flower buds in the following season.

🌸 Flowering

It produces small, intense carmine flowers, approximately 15–17 mm long, which open relatively little. Flowering is recorded in late spring and early summer, sometimes during June. The fruits are small and may show greenish or reddish-brown tones. Plenty of light and proper winter dormancy promote flowering.

🌿 Nutrition

During active growth, Desert CHOICE® Cactaceae NPK (Ca-Mg) 4-4-7 (4-4) is recommended. Assimilable calcium promotes the formation of firm tissues and the maintenance of turgidity, while magnesium participates in chlorophyll synthesis.

This is an inimitable xerophyte cultivated in Madrid in a technological square pot and with the substrate activated with mycorrhizal fungi and biofungicides.

Gourmet black pot measuring 9x9 cm

* As this is an online purchase, the appearance of the sent specimen may vary slightly from the product image. The photo description specifies the plant's measurements, but this may also vary slightly, because it is a living being! Each of the plants at Desert CITY has unique characteristics.