Galvanized steel offers a virtually indestructible option for edging lawn and planting beds. This type of edging comes in straight sections, which you fit together to create a seamless look. The steel is thin enough that you can easily bend it to swoop around bed corners. After installation, the finished look is professional. To install, first moisten soil before slicing sod with a spade or edging tool. Use a rubber mallet to pound edging into place.