Pot Size: 8"
Accepted Scientific Name: Echinocactus grusonii var. brevispinus
Origin and Habitat
Echinocactus grusonii var. brevispinus is a rare naturally occurring form of the Golden Barrel Cactus, native to central Mexico, particularly the arid limestone hills of Hidalgo and Querétaro. It grows on rocky slopes and well-drained volcanic and limestone soils in regions that receive intense sunlight and seasonal rainfall. This variety shares the exceptional drought tolerance of the species but is distinguished by its much shorter, thicker spines, giving the plant a smoother, more sculptural appearance. Due to habitat loss, wild populations of Echinocactus grusonii are critically endangered, making cultivated specimens especially valuable for conservation and collectors.
Description
Echinocactus grusonii var. brevispinus is a slow-growing, solitary barrel cactus that develops into a nearly spherical to slightly cylindrical stem reaching 24–36 inches (60–90 cm) tall and 18–30 inches (45–75 cm) wide with age. The vibrant green body is divided into numerous prominent ribs lined with dense golden areoles bearing short, stout yellow spines that are significantly shorter than those of the typical species. Mature specimens may produce a crown of large, bright yellow flowers during summer, followed by woolly seed capsules. Its symmetrical form and reduced spination make it an outstanding specimen for collectors, containers, rock gardens, and desert landscapes.
Cultivation
Zone: 9–11
Temperature: 5°C to 38°C
Growth Rate: Slow.
Soil: Use a sharply drained cactus soil containing pumice, coarse mineral aggregate, and organic matter. Avoid soils that retain excess moisture.
Watering: Water thoroughly only after the soil has completely dried. Keep nearly dry during winter to prevent root rot.
Fertilizing: Feed every 3–4 weeks during spring and summer with a low-nitrogen cactus fertilizer diluted to half strength.
Light: Full sun to very bright light. Gradually acclimate young plants to intense sunlight to prevent sunburn.
Pests and Diseases: Generally trouble-free but may occasionally develop mealybugs, scale insects, or spider mites. Overwatering and poor drainage are the primary causes of root rot.
Propagation
Primarily propagated from seed, as this variety rarely produces offsets.
