If you don’t live in the center of the Tucson valley, chances are you have some sloped areas in your backyard. Slopes can be a challenge to gardeners, but they also offer some great design opportunities. For one thing, incorporating slopes and hills into your garden design can increase the visual interest in your design. You will automatically introduce a three-dimensional element, which allows you to design the flow around it. For example, you may choose to lead your path around the hill or along the slope to provide your visitors with a visual journey. Hills and slopes can also provide you with uninterrupted views, which makes your yard look…