A "variegated elephant bush" refers to a variety of the common elephant bush plant (Portulacaria afra) that features leaves with distinct cream-colored or white margins contrasting against the green center, essentially giving the foliage a variegated appearance; this succulent is known for its drought-tolerant nature, thick reddish-brown stems, and small, fleshy leaves, making it a popular choice for low-maintenance indoor or outdoor gardening, often grown as a shrub or in containers; due to its attractive variegation, it's also called a "rainbow elephant bush" or "rainbow portulacaria."