I've seen steel strips used like that in commercial landscapes, Eric. They have to work better than the thick, 5/8" x 3 1/2" plastic edging I used around here. Every single piece of that junk warped and worked its way out of the ground, and in the fire, the top edges melted bending it even more. I'd planted a couple hundred feet of the wretched stuff, and dug and pulled it all back up, forming a pile of it on the gravel pad where the shipping container is going. Last week, I spent a delightful afternoon, first removing the screws that held the wooden stakes onto the sides of the stuff, then using a saber saw to cut it into garbage can sized lengths for disposal. In many places, the melted plastic had covered up the screw heads, so I made do by breaking the pointed ends of the screws off with a pair of vise grips. Glad that job's done, but what a massive waste of time and money installing it in the first place.
A much better day down your way than up here in NE. It rained all day here until about an hour ago, I'll probably see off/on rain shower activity until tomorrow.
