This landscape detail shows the soil profile for an enclosed planter bounded by a concrete retaining wall. A two-inch layer of mulch sits atop thirty inches of amended and imported graded topsoil. The topsoil is supported by a native soil subgrade.
2" 2' - 0" MULCH AMENDED AND IMPORTED GRADED TOPSOIL 30" MIN. DEEP NATIVE SOIL SUBGRADE PLANTER RETAINING WALL
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