Tephrocactus articulatus (Pfeiff.) Backeb. ·

🌱 Morphology
    Slow-growing shrubby cactus with jointed stems that can reach 30–40 cm in height and form loose clumps. It is composed of fleshy, globose, ovoid or elongated segments, approximately 3–7 cm long, with a grey-green, grey-blue or brownish-grey epidermis. The segments have inconspicuous tubercles and large areoles, distributed on the upper areas. In the form traditionally called inermis, the areoles lack those flat, flexible, papery spines, generally white, cream or brown, which can reach 5–10 cm in length, characteristic of the original species.  It also has reddish or brown glochids, fine and easily detached. The segments separate easily and can root when they come into contact with the soil. The root system is branched and adapted to dry soils.

🌍 Distribution, habitat and family
Native to western and central Argentina, in arid environments in the northwestern and central-western provinces of the country. It grows on dry slopes, sandy plains and stony ground, approximately between 500 and 2,500 m above sea level, depending on the population. It is adapted to low rainfall, strong sunlight and large temperature fluctuations. The ease with which the segments detach and root favors its vegetative propagation in these environments.

Family Cactaceae · subfamily Opuntioideae · tribe Tephrocacteae. 

❄️ Temperature · USDA Zone 8b
Tolerates brief minimum temperatures close to −7 ºC in dry conditions and with good acclimatization. Effective resistance depends on the duration of the frost, the moisture of the substrate and the origin of the specimen. In a pot, it is advisable to protect it from prolonged damp cold, especially during the winter dormancy.

☀️ Lighting
It needs intense lighting and appreciates gradual direct sun , which promotes compact growth and the formation of robust segments. Good ventilation reduces the risk of damage from persistent moisture. During active growth, a reference of 18–25 mol·m⁻²·day⁻¹ of PAR DLI is recommended, with gradual acclimatization if it comes from a shaded cultivation.

💧 Growth cycle and watering
Winter dormancy. Keep completely dry during the winter, especially with low temperatures. In spring and summer, water thoroughly and let the substrate dry out completely before repeating. It needs a very well-draining substrate, with a high proportion of mineral components. Detached segments can root if placed on a dry and airy substrate once any wound has healed.

🌸 Flowering
Produces flowers approximately 3.5–4 cm in diameter, in a pearlescent white or slightly pink color. They appear in the areoles of the segments, mainly during spring and summer, depending on the growing conditions. The fruits are globose or obconic, around 2 cm in diameter, and acquire pink tones as they ripen. 

🌿 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 xerophyte in a 9x9 cm pot.

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