Echinofossulocactus is a genus of round and beautiful cacti. The generic name derives from the Ancient Greek echino - "spiny" and cactus and describes these plants well. They are native of sunny mountain sides from Mexico. The barrels range in size from several hundred pounds to miniature forms only a few inches high. Echinofossulocactus is a genus usually with large spines and small flowers. A few have more slender and flexible spines and some have none. The exterior exhibits plenty of spiralling ribs, some up to more than a hundred. Flowers are produced at or near the apex of the plant and last for 3-4 days. Dry fruits are produced by the cactus and are not edible. Hardiness zones 9-11, (-5øC/25øF, 4øC/40øF). Echinofossulocactus are sensitive to cold and humidity. They weaken under 8øC. They thrive on plenty of sun. Young cacti should be protected from direct sunlight, until fully acclimated. Most species are subject to scarring at the base of the column, and this can be partially avoided by providing regular water and fertilizer. They grow rapidly if they are given abundant water and fertilizer. A little shade is better during summer and a full sun during winter.