An untidy and sloppy work of edging, on the other hand, merely makes the landscape seem untidy and unkempt. A clean and crisp job of edging establishes definition between the grass and the flower beds. The ability to keep weeds from spreading from your lawn into your flower beds is the single most essential benefit that can be gained by properly edging your flower beds. After the trench has been prepared as an edge for the landscape, many gardeners choose to finish the job by adding materials such as brick, stone, pavers, and polyvinyl edging. However, a basic trench will work just well. Because of these physical barriers, there is no longer a need to perform the edging process multiple times as the soil washes into the trench.