 is what's called either lithic mulching or rock gardening. But the basic idea is that you take rocks and you grind them up, and the small little fragments of rock get mixed in with the rest of the soil. And by doing so, you have increased the nutrients. And when you also combine that with these rock gardens, with larger rocks that are kind of surrounding the plants that you're growing, it protects them from salt spray, wind, erosion, and also keeps the temperature a lot more stable