Landscape Edging: 10 Easy Ways to Set Your Garden Beds Apart: EverEdge Edging - Made from sturdy, powder coated flexible steel with 3-3/4" spikes, EvrEdge appeals with its casual, country garden look. Lengths are interlocking for seamless installation and come five to a set, totaling 16 linear feet of edging per package. $95 at Grandin Road
Cor-ten steel is a beautiful material. It is being used in gardens more and more and loved for its warm, weathered and industrial look. In my experience, this edging looks better when it is 1/4" thickness. Anything thinner and you will see bowing and the edge will not appear clean and straight, which is it's best attribute. Also when specifying corten, make sure you get a certificate that verifies it is truly cor-ten, and ASTM grade A588 or A606. View Product Website
Steel Steel edging is a very common landscape option, but depending upon your choice of color, it can make very different statements. Black steel edging looks more formal; green and brown are more traditional. It also comes in a range of thicknesses, with the thicker material being more expensive (and more durable) than the thinner edging. Cost: $2.50 to $4.50 per linear foot.