Love these planters! I was about to fabricate some planters in steel when I came across these while crusing the web. Saved me lots of time (and money) as the product is well made and the rust patina is coming along beautifully. I used a strong solution of muriatic acid (one application only), followed by a salt water spritz with regular water spray as I see fit, and they are on their way to a beautiful rust patina even in our super dry humidity in northern New Mexico.