Mulch is a protective layer of material that is spread 3-6 inches deep on top of exposed soil between plants. Mulch is by far the best way to preserve the water in your soil and can be a very effective way of feeding your soil. Mulch can be almost anything: straw, grass clippings, corn cobs, river stones, pea gravel, chipped bricks, bark chips, leaves, peat moss, seaweed, wood ashes, sawdust and so on.
Most people believe that mulch is just something you put in your flower bed to make it look nice. But mulch has many benefits that most people don’t realize. It helps preserve water and regulate the temperature in your soil but it also prevents the growth of weeds, protects soil from compaction, cuts down on erosion and, if organic, feeds your soil. As the mulch decomposes, it provides that vital organic matter to your soil, encourage microbe growth and shelter earthworms. All that organic matter keeps your soil loose so that it can retain moisture and promote root growth. So be sure to keep your mulch fresh, your plants and soil will thank you!