Decomposed Granite The basics: Decomposed granite, or DG, is a granitic rock that has weathered to the point of breaking into very small pieces and siltlike particles. It comes in a reddishtan color that will fade to a lighter tan over time. Decomposed granite is ideal for pathways and rustic patios, and can also be used as a topdressing around arid plants.
· CountryMouse13 / Flickr / CC by It may look like dirt, but decomposed granite (DG) is actually a gritty, crumbly granite rock that binds together when compacted. Unlike dirt, it doesn't create dust or particles when you walk on it. And for areas that don't need to .