The peanut cactus (Echinopsis chamaecereus) is a mat-forming cactus native to Argentina that has slender, finger-like stems that can grow up to 12 inches long. When young, the cactus looks like a peanut, but as it matures, it looks like a finger and starts to trail out of its planter. It has short, bristly spines that are relatively gentle to the touch. The peanut cactus blooms with large, orange to red flowers in late spring