St. George sits in a bowl of Navajo sandstone where summer heat regularly exceeds 110 degrees and annual rainfall barely reaches 8 inches, making every landscape decision a calculation against drought and soil loss. The sandy loam soils stretching from the Washington city limits westward through Santa Clara drain quickly and shed organic matter with each irrigation cycle. Along the Virgin River corridor, homeowners deal with shifting sandy fills that need serious amendment before any planting bed can hold moisture. In communities like Ivins, where yards meet the red rock base of the Snow Canyon foothills, decorative stone and quality topsoil are not afterthoughts but the entire foundation of a yard that can actually sustain plant life.