I use the galvanized steel ones and they are just fine although I am only going on 3 years. I am in zone 5 which is pretty cold and have had no issues with them. I make my labels on the clear Avery 5660 Laser Labels and good luck getting them off after you put them on unless you remove it right away. Seedfork - Good idea on flipping the label portion over - I did not even think of that! I just tossed 2 that I could not get the label off of and I am sure I could have flipped the edges. They are pretty bendable. I will say that they can be mangled - my landscaper has done it on occasion so I make sure and put my plant markers next to or behind my plants now for the ones that are near the border of my beds.
