Thelocactus HEXAEDROPHORUS

Thelocactus HEXAEDROPHORUS - Hexagonal thelocactus (Hexaedrophorus, Gexaedrophorus), Thelocactus LLOYDII, Echinocactus FOSSULATUS.

Thelocactus is a genus of cacti in the family Cactaceae, comprising about 10 species inhabiting the northern and central regions of Mexico. These plants are known for their compactness, resilience, and beautiful flowers that bloom at the apex of the plant.

The stem is most often solitary, globose or depressed-globose, covered with ribs or tubercles. Areoles are equipped with numerous radial spines and one or more central spines. The flowers are funnel-shaped, large, in a variety of shades. The fruits are juicy, containing small dark seeds.

Thelocactus hexaedrophorus is one of the most famous species of the genus, with a depressed-globose body up to 12 cm (4.7 in) in diameter. The surface is grey-green or glaucous, divided into large, clearly defined tubercles resembling hexagons. The spines are strong but not aggressive, whitish or yellowish, arranged radially.

It blooms in spring and early summer. The flowers are large, up to 6 cm (2.4 in) in diameter, white, pink, or lilac, with a pronounced tube. Flowering is long-lasting and can repeat several times during the season. The fruits are green, oval, turning brown and dehiscing upon ripening.

Seeds are sown on the surface of a moistened mineral substrate. Sowings are covered with a lid or glass. Germination temperature is 22-26 °C (72-79 °F). Regular ventilation is carried out.

Seedlings emerge after 8-14 days. The maximum possible germination time is up to 25 days. Pricking out is carried out after the formation of the first spines. Seedlings develop evenly and do not stretch.

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It is placed in a sunny location. A south or southwest window is suitable. Maintenance with access to direct sunlight is preferred. Ventilation and minimal air humidity are provided. During the growth period, a temperature of 22-28 °C (72-82 °F) is maintained. In winter, keeping at 8-12 °C (46-54 °F) is recommended. Watering is carried out after the soil completely dries out. In winter, watering is stopped completely.

A mineral substrate with the addition of sand, fine pebbles, and brick chips is used. Planting is carried out in a wide, stable pot with mandatory drainage. Repotting is carried out if necessary in spring. Fertilizers are applied once every 3-4 weeks during the warm period of the year. Special fertilizers for cacti with minimal nitrogen content are used. During the dormant period, fertilizing is not applied.

Shaping is not required. Propagation is carried out by seeds. The plant does not form offsets. Flowering is possible in the 3rd-4th year with good care and observance of winter dormancy conditions.