Ferocactus pilosus, commonly known as Mexican Lime Cactus or Mexican Fire Barrel, is an evergreen succulent native to the arid and semi-arid regions of Northeastern Mexico, particularly thriving in desert scrub and rocky hillsides. It can grow to a height of 2-8 feet (0.6-2.4 meters) and a width of 0.5-6 feet (0.2-1.8 meters). This cactus features a cylindrical, ribbed stem with clusters of red spines, which give it a striking appearance. The spines are long and can be quite dense, providing the plant with a "furry" look. Ferocactus pilosus blooms with showy yellow flowers that have red centers, typically appearing in the spring and summer months.

The Mexican Lime Cactus is valued for its drought tolerance and unique, ornamental spines, making it a popular choice for xeriscaping, rock gardens, and as a specimen plant in cactus and succulent collections. It is also used in container plantings due to its slow growth and manageable size. In cultivation, it requires minimal maintenance, thriving in full sun and needing very little water. It is best grown in well-draining sandy or gravelly soils to prevent root rot. While generally disease-resistant, overwatering can lead to fungal issues. It is important to note that the spines can be sharp and should be handled with care.CC BY-SA 4.0