Corten Steel, also known as weather resistant steel, is a steel alloy made of iron which has copper, silicon, nickel and chromium added. As soon as Corten Steel is exposed to the elements it will naturally weather and develop a protective layer of rust, this can take several months. This natural fixed coating of rust provides protection against further corrosion. Characteristic of Corten Steel is the orange brown rust colour and its longevity. As a trough pot like this adds the most wonderful texture to your garden and this size of troughs are great for creating screens and adding layers at boundaries. Products are delivered without rust. The corten steel rusting process takes about 4-5 months, depending on weather conditions. The planter has feet and drainage holes. These allow the planter to float a little above the ground (90 mm) and provide optimal drainage.