The Corten Steel (Cor-Ten) Sphera Planter is uniquely designed to provide a modern, industrial aesthetic in a variety of open spaces, and to withstand harsh weather conditions in outdoor environments. Its distinctive styling and durable construction make it suitable for both residential and commercial settings. Corten Steel is particularly well-suited to accommodate dwarf tree varieties and larger perennials. These planters serve as an eye-catching focal point in areas like atriums, commercial courtyards, gardens, and larger patio areas. Corten Steel develops a natural patina finish due to its inherent properties, which is composed of a copper chromium alloy that has much higher resistance to weathering compared to other unalloyed steels. This natural patina not only adds to the planter s visual appeal but also serves as a protective layer against corrosion. Our Corten Steel planters have been pre-treated to accelerate this patina process, so when shipped, they already have the desired rust-patina finish. Beautiful, stylish, and rugged, these industrial planters will enhance any commercial or residential project.