 You see, we live in the high desert, where the soil is designed to grow sagebrush, not turf grass. But Humigreen contains rich dark humus, which adds carbon to the soil, so it holds more moisture. Plus, it's loaded with vital trace minerals, which are missing from our soil. So when you apply ZAMZO's Humigreen, your lawn turns a deep dark green, uses less water, and is healthy and well-nourished.