I just love succulents, so I decided to make a rock garden in an area of my yard that is a little harder to grow plants. I thought with shallow rooted succulents with a mix of some perennials, my garden should survive. I used Red Lava Rock Boulders and gold flake decomposed granite as my mulch. I hope using the decomposed granite as mulch, my garden will survive. I guess time will only tell if it survives.