Cactus e Dintorni

Habitat: deserts of Mexico and United States.
Description: barrel-shaped cacti of variable size with prominent ribs, tough spines and yellow flowers arranged in a ring near the top. They’re usually difficult to get to flower.
Soil: basic mix.
Location: grow in full light, better if filtered in the summer, and plenty of air circulation.
Temperature: they require a minimum temperature of 6°C (43°F), the more delicate species preferring a minimum of 8 or 10°C (47-50°F)
Water: average.
Cultivation tips: slow-growing plants that benefit from the application of low-concentration fertilizer.
Main species of Echinocactus: Echinocactus grusonii, it produces flowers after 30 years or so, once it has reached a diameter of about 30-35 cm.; Echinocactus platyacanthus;
Echinocactus  polycephalus. Echinocactus  xeranthemoides and Echinocactus  horizonthalonius are rather difficult to grow, so it’s advisable to graft them on to Cereus; soil: 1 part humus and 4 parts sand or pumice; they need to be watered cautiously and kept dry in the wintertime.