What is mulch? Why do we use it? How do we use it? Many home gardeners that I come across don’t understand the answer to these questions.A nice fresh application of mulch certainly looks nice, but did you know that it does a lot more than just add aesthetic value to your landscape? It helps suppress weeds, retain soil, moisture, and moderate soil temperatures. And organic mulches like shredded hardwood, mulch, decomposes overtime and cycles nutrients, and organic matter back down into your soil.