Turbinicarpus SCHWARZII

Turbinicarpus SCHWARZII - Schwarz's turbinicarpus, Turbinicarpus schwarzii.

Turbinicarpus is a genus of dwarf cacti in the family Cactaceae, comprising about 30 species native mainly to central and northeastern Mexico. These cacti are renowned for their slow growth, unusual appearance, and remarkable resilience.

The plants are most often solitary, globose or short-cylindrical, with mamilliform tubercles instead of ribs. The areoles are small, and the spines vary in shape and arrangement, often being decorative. The flowers are large relative to the size of the plant, situated at the apex. The fruits are small and concealed within the stem tissues. The seeds are small and black.

Schwarz's turbinicarpus is a compact species with a rounded body up to 3-4 cm (1.2-1.6 in) in diameter. The surface is grayish-green, covered with dense tubercles. The areoles are small, with stiff, straight, or slightly curved spines of white or grayish color. The root is napiform and massive.

It blooms in the spring-summer period. The flowers are pinkish-violet with a darker center, funnel-shaped, up to 3 cm (1.2 in) in diameter. The fruits are small, green, and after ripening become concealed within the stem tissues. The seeds are rounded, black, and glossy.

The seeds are pre-soaked for 24 hours in a weak solution of potassium permanganate, then sown superficially in shallow containers with a mineral substrate. The containers are covered with a lid. The germination temperature is 22-26 °C (72-79 °F), with regular ventilation provided.

Seedlings appear in 10-20 days. The maximum germination period is up to 30 days. Pricking out is performed approximately one month later when the first spines appear. Young seedlings require gentle handling and are gradually transitioned to dry conditions, increasing light levels while avoiding sunburn.

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It is placed on south- or southwest-facing windows. Bright sunlight and dry air are required. It is important to ensure good ventilation and protection from rain or overwatering.

During the growing season, a temperature of 22-28 °C (72-82 °F) is maintained. In winter, it is kept at 5-10 °C (41-50 °F) in complete dormancy. Watering is carried out rarely, only after complete drying of the substrate. In winter, it is not watered at all.