Can cast iron outdoor planters be safely cleaned with pressure washers?

Cast iron outdoor planters are durable and stylish, but cleaning them requires care. While pressure washers can be used, caution is essential to avoid damage. High-pressure water can strip protective finishes or accelerate rusting if not done properly. For best results, use a low-pressure setting (below 1,500 PSI) and hold the nozzle at least 12 inches away. Pre-treat stubborn dirt with mild soap and a soft brush. After washing, dry thoroughly and apply a rust-resistant sealant to prolong the planter's lifespan. Regular maintenance ensures your cast iron planters remain both functional and visually appealing for years.