Hardscaping 101: Decomposed Granite: GardenistaDec 28, 2016 . It turns out that in many ways decomposed granite (or DG, as it's . natural weathering and erosion of solid granite, a tough, hard, igneous rock.crushed granite rock,5 Gravel and Stone Types for a Rockin' Landscape - HouzzMay 7, 2013 . I love rock in the garden, but I particularly love gravel and other small . The basics: Decomposed granite, or DG, is a granitic rock that has.
crushed granite rock