Define the term "edging" in landscape design.

In landscape design, "edging" refers to creating defined borders between different areas of a landscape. This technique involves installing physical barriers or designing transitions that clearly delineate one space from another, such as between garden beds and lawns, or around pathways and flower areas. Edging is an important aspect of landscape aesthetics as it helps to organize the space, guide foot traffic, and enhance the overall visual appeal by creating a clear and structured look.

By establishing distinct edges, it also contributes to the functionality of a landscape, making maintenance easier by preventing grass and other plants from encroaching into flower beds or garden areas. This design technique can also enhance the flow and coherence of the landscape, allowing for more effective planning of themes and plantings within designated zones.