Box Round Cube Corten Steel Metal Planter Modern Garden Steel Planters

The same goes for the ecosystem around your Corten planters. There isn’t enough corrosion happening to be worried about pollution. One thing to consider, however, is that Corten planter boxes can stain hardscapes. Gardeners should lay down a tarp, matting, or some other material that will prevent unwanted staining on concrete or decking. Combine it with gravel to highlight the hue of the nice planter boxes! It takes a little time for your raised bed’s natural, protective patina to develop. To speed up its development on Corten steel planter boxes, we recommend combining 2 oz of vinegar, ½ teaspoon of salt, and 16 ounces of hydrogen peroxide in a spray bottle. Shake the bottle vigorously to combine the ingredients. With gloves and goggles on, spray the entire surface of the planter box. Wipe it with a towel if the spray texture on the planter needs smoothing. This speeds the development of the patina, and a protective coating forms on the oxidized metal. Repeat the process over time, allowing it to dry between treatments until you achieve the desired look on your metal planter. Pretty easy!