Define your space
Borders can act much the same way as walls when it comes to defining your outside space. Mulch and plants add softness and life to a space, while a wall can provide greater sound proofing and privacy.
Ideas on a budget
Define an area with budget-friendly mulch, gravel, or sand. Adding a border of stone gives the area more definition and weight.
How much will it cost?
Put a border around your flower beds for as little as 1 or 2 dollars per linear foot..