The planter by the brand White Label from the Corten steel collection is made of metal, which gives the planter a robust appearance. The planters from this collection are made of corten steel, a metal alloy known for the warm, orange-brown hue that develops during the rusting process. The planters are initially grey in colour and, depending on the weather and location, will rust within a few months. This makes each planter unique. The planter is delivered while still undergoing the rusting process and is therefore partly rusted. For an accelerated rusting process, the planter can be sprayed with water daily using a plant sprayer. In the first few months, there is a possibility that rust may stain tiles; it is advised to rinse this away daily or to temporarily place the planter on a different surface. The natural finish and frost resistance mean that the planter can remain outside during cold periods without being damaged.