Boundaries and Rooms in Your Garden by Robin De Groot Creating structural elements in your garden will transform it from the ordinary, to the extraordinary. A well-planned framework of supports and dividers will create visual interest throughout the year, as well as allow your plants greater depth and perspective by incorporating the walls, fences, arbors, trellis and forms, into their growth pattern. Boundaries and divisions also create the stage setting for each area in your garden, while keeping the rest of the world (and its problems) out.