How deep should mulch be?
The ideal depth is two to three inches. If you’re using shredded hardwood mulch, lay it about four inches deep to allow for settling. Mulch laid too thickly prevents drying and leads to water-logged soil, particularly during wet seasons. Speaking of water, some people like watering down new mulch to help it stay in place, although this is not really necessary. A common mulching myth is the belief that old mulch should be removed before adding new. Not true. Simply refresh old mulch by fluffing it up and adding enough new mulch to bring the depth back up to two inches. Trees need water and nutrients from the soil to survive. Proper mulching helps ensure your trees have what they need to live long, healthy lives and helps beautify your yard at the same time.
