Calling ‘Cristata’ a cactus is a misnomer, as it is actually two succulents grafted together. The wavy, coral-like top of the fan-shaped succulent is a mutation of Euphorbia lactea, and then grafted onto the root stock of another succulent. “Coral Cactus” ranges in color from blue-grey to silver. The edges of the crests can turn pink when happily stressed.
