barrel

Originating in Mexico, this popular cactus reaches up to 6 ft (1.8 m) in height and spread. It has a single, globe-shaped, pale green body that stretches upwards in maturity, becoming barrel-shaped. This stem is heavily ribbed with numerous areoles sprouting radial, yellow spines. In summer, larger cacti produce a circle of vivid, yellow flowers from a crown at the top of the plant. Culture: Frost tender but resistant to very dry conditions, they grow best in well-drained soil and a position in ...