Kudzu is a fast-growing vine native to Japan, China, and parts of Southeast Asia. It is an invasive species in the United States, where it has spread rapidly since its introduction in the late 19th century. Kudzu grows quickly, up to a foot per day, and can cover large areas in a short amount of time. It is often used as a ground cover or for erosion control, but can be difficult to manage due to its rapid growth.