Rockfoil is a type of plant that grows in rocky or gravelly soil, and is also known as stonecrop or sedum. There are several synonyms for the word rockfoil, including stonecrop, live-forever, wall-pepper, and chicken-gizzard. These names reflect the different characteristics of the plant - stonecrop refers to the hardiness and resilience of the plant, live-forever alludes to the plant's ability to withstand harsh conditions and survive for a long time, wall-pepper reflects the plant's preference for growing in walls and other rocky surfaces, and chicken-gizzard refers to the plant's fleshy, succulent leaves that resemble a chicken's gizzard. Regardless of the name used, rockfoil is a beautiful and tough plant that can add interest to any garden or landscape.