The simplest and most subtle borders that effectively separate your lawn from a garden are 4-in.deep strips of steel, aluminum or plastic. They all bend easily into smooth, graceful curves and stop the spread of grass roots. However, painted aluminum and steel offer the sleekest, most refined look because they almost disappear against the grass and garden bed.
Arcadian Lawn and Paving Edging: this is a wonderful way to make clean landscaping. More elegant than brick, cobblestone, or pounding plastic edging. I've been contemplating how to give my new home a new look until now.