
Photo: Accent Landscapes Inc.
Walls, normally thought of as interior design elements, are useful in landscaping, too. A landscaping wall can be freestanding to define an area, to provide a garden backdrop, or to create privacy. Or a landscaping wall can be used to retain earth after an excavation, such as for a driveway or patio. In the latter case, they’re called retaining walls.
Retaining walls have to work a lot harder than freestanding walls. In addition to supporting their own weight, they must resist lateral forces due to the soil being retained. Sometimes that soil is saturated with water, which can build tremendous force, especially with slow-to-drain, expansive clay soils.
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